Upper Paleozoic Rocks in The Oquirrh Mountains and Bingham Mining District, Utah
GEOLOGICAL SURVEY PROFESSIONAL PAPER 629 - A
Upper Paleozoic Rocks in The Oquirrh Mountains and Bingham Mining District, Utah
By E. W. TOOKER and RALPH J. ROBERTS with a section on BIOSTRATIGRAPHY AND CORRELATION
By MACKENZIE GORDON, JR. and HELEN M. DUNCAN GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
GEOLOGICAL SURVEY PROFESSIONAL PAPER 629-A A study of the structures, the lithologic successions, and the fossils of two sequences of rocks of the same age that are juxtaposed by thrust faults
UNITED STATES GOVERNMENT PRINTING, OFFICE, WASHINGTON: 1970 UNITED STATES DEPARTMENT OF THE INTERIOR
WALTER J. HICKEL, Secretary
GEOLOGICAL SURVEY
William T. Pecora, Director
Library of Congress Catalog Card No. 73-607760
For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Price $1 (paper cover) CONTENTS
Page Psge Abstract ______Al Biostratigraphy and correlation of the Oquirrh Group and related rocks in the Oquirrh Mountains, Utah, Introduction ______1 by Mackenzie Gordon, Jr., and Helen M. Duncan __ A38 Acknowledgments ______2 Rogers Canyon sequence _ _ 39 Geologic setting ______2 Green Ravine Formation ______40 Previous terminology and recommended changes 5 Lake Point Limestone ______"_ 42 Revised upper Paleozoic stratigraphy ______9 Erda Formation ______46 Kessler Canyon Formation ______48 Rogers Canyon sequence ______9 Park City Formation, Grandeur Member __ 49 Green Ravine Formation ______10 Bingham sequence ______50 Oquirrh Group ______11 West Canyon Limestone _____ 50 Lake Point Limestone ______11 Butterfield Peaks Formation ______50 Erda Formation ______14 Bingham Mine Formation ______53 Kessler Canyon Formation ______18 Clipper Ridge Member ______53 Markham Peak Member ____ _ 53 Park City Formation ______21 Correlation and age of the Bingham Mine Grandeur Member ______21 Formation ______55 Bingham sequence ______23 Register of late Paleozoic megafauna collecting locali Oquirrh Group ______23 ties in the Oquirrh Mountains, Utah ______57 West Canyon Limestone _____ 23 Register of late Paleozoic fusulinid collecting localities Butterfield Peaks Formation _____ 27 in the Oquirrh Mountains, Utah, identification and Bingham Mine Formation _____ 33 comments concerning fusulinids by R. C. Douglass _ 66 Clipper Ridge Member ______33 References ______70 Markham Peak Member ______35 Index ______73
ILLUSTRATIONS
Pa<"e FIGURE 1. Index map showing the principal mountain ranges in the Great Basin region in northwestern Utah ___ /2 2. Sketch map of the Oquirrh Mountains and South Mountain showing the locations of the Rogers Canyon, Bingham, and Curry Peak sequences _____.______3 3. Generalized columnar sections of the Rogers Canyon and Bingham sequences in the Oquirrh Mountains_ 4 4. Sketch map of the Oquirrh Mountains showing location of type and reference sections ______5 5. Columnar sections showing the development of upper Paleozoic rock-stratigraphic divisions in the Bingham sequence ______.______6 6. Columnar sections showing the development of upper Paleozoic rock stratigraphic divisions in the Rogers Canyon sequence ______.______8 7-12. Photographs of: 7. Typical exposures of Rogers Canyon sequence ______12 8. General features of the lithology of the lowermost part of the Lake Point Limestone _ __ __ ]"3 9. The upper two-thirds of Erda Formation and the basal part of Kessler Canyon Formation _ 15 10. Typical exposures of reference section of the West Canyon Limestone and the basal portion of the Butterfield Peaks Formation in Soldier Canyon ______-______24 11. Typical exposures of the middle part of the Butterfield Peaks Formation at the head of White Pine Canyon tributary of Middle Canyon __.______27 12. Typical exposures of the Jordan (limestone) marker bed (a thick cherty limestone) within the base of the Clipper Ridge Member of the Bingham Mine Formation at the type locality of the member in Middle Canyon ______-______28 13. Correlation chart of sections in the central Great Basin ______56
III IV
CONTENTS
TABLES
Page TABLES 1-6. Megafaunas: 1. Green Ravine Formation type section ______A40 2. Lake Point Limestone type section ______' 43 3. Erda Formation type section ______46 4. Park City Formation, Grandeur Member reference section ______49 5. West Canyon Limestone reference sections in West Canyon and Soldier Canyon ______51 6. Butterfield Peaks Formation type and reference sections in West Canyon and Soldier Canyon _ 52 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH
By E. W. TOOKER and RALPH J. ROBERTS
ABSTRACT vanian age consists of the following formational units in the Oquirrh Group: the West Canyon Limestone (redefined) of Recent studies in the Oquirrh Mountains indicate that the Early Pennsylvania age; the Butterfield Peaks Formation rocks of late Paleozoic age may be divided into two main (new), of Middle Pennsylvanian age; and the Bingham Mine sedimentary sequences, one north of the North Oquirrh thrust Formation (redefined) of Late Pennsylvanian age, which is fault and the other south of the Midas thrust fault. Upper divided into the Clipper Ridge and overlying Markham Peak Paleozoic stratigraphic sections, which make up most of the rocks in the range and in the Bingham mining district, are Members (new). in the Bingham sequence, on the upper plate of the Midas . The Carboniferous and Early Permian rocks of the Oquirrh thrust; a much thinner section of comparable age occurs Mountains are very fossiliferous locally and provide a rea in the Rogers Canyon sequence, on the upper plate of the sonable basis for dating these rocks. They also provide a North Oquirrh thrust. Underlying both the North Oquirrh faunal and biostratigraphic framework for correlating the and Midas thrusts is an areally small, stratigraphically in formations of the Rogers Canyon and Bingham sequences with complete, complexly folded, faulted, and altered sequence, each other and with similar rock sequences elsewhere in the which seems stratigraphically and structurally more akin to Great Basin and border areas to the east. the Rogers Canyon sequence than to the Bingham sequence. The main stratigraphic unit of the Rogers Canyon and INTRODUCTION Bingham sequences, the Oquirrh Group, is composed of three The stratigraphy of sedimentary rocks in different mappable lithologic units: a lower clastic limestone; a middle unit consisting of cyclically repeated limestone, shale, and parts of the Oquirrh Mountains, Utah, has been tl °. sandstone; and an upper unit of interlayered thick beds of subject of many reports during the past 70 years quartz sandstone and thin beds of carbonate sandstone. (Spurr, 1895; Keith, 1905; Gilluly, 1932; Nygreen, Formal names are here proposed for the units in the Rogers 1958; Bissell, 1959; Welsh and James, 1961; Tooker Canyon sequence, and previous terminology is examined for and Roberts, 1961, 1963). Several systems of strati- comparable units in the Bingham sequence because of the distinctive sedimentary and faunal characteristics in each. graphic nomenclature have been proposed in the?e In addition, some member units and marker beds of local reports for rocks in specific areas within the range, significance are recognized. These lithologic units have been but no comprehensive definitive stratigraphic ter useful in the preparation of new geologic maps of the Oquirrh minology for the whole range has been published. Mountains and in making regional correlations with com The investigations by Welsh and James (1961) in parable rocks elsewhere in the Great Basin. the central and southern parts of the range, par The Rogers Canyon sequence consists of the following formational units, in ascending order: the Green Ravine ticularly near the Bingham ore deposits, and tl n Formation (new) of Late Mississippian age; the Oquirrh studies by Tooker and Roberts (1961; 196F) Group comprising the Lake Point Limestone (new) of Late throughout the range are updated in the present Mississippian and Early Pennsylvanian age1, the Erda For report and new stratigraphic and faunal data are mation (new) of Middle Pennsylvanian age, and the Keesler Canyon Formation (new) of Late Pennsylvanian and Early included. The revised stratigraphic data provide Permian (?) age; and the Grandeur Member of the Park standard units for geologic quadrangle maps of the City Formation of Early Permian age. Oquirrh Mountains. The part of the Bingham sequence overlying the Manning The stratigraphic nomenclature used in this re Canyon Shale of Late Mississippian and Early Pennsyl- port is largely based on the measured sections and maps of Welsh and James (1961, pis. 2 and 5), tH 1 Since the preparation of this report, it has been determined that measured sections and map by Tooker and Roberts paleontologic evidence shows a slight difference in the boundary of the Lower and Middle Pennsylvanian Series as uspd in the midcontinent (1961) and Roberts and Tooker (1961), our unpub when correlated with the type Pennsylvanian in the Appalachian lished maps, and the stratigraphic sections and fau region. Indications are that part of the Morrow is Middle Pennsyl vanian in age. nal data in this report. A section listing and describ- A2 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH ing the characteristic fauna present and the bio- stratigraphy and correlation of Oquirrh Mountains rocks is by Mackenzie Gordon, Jr., and Helen M. Duncan. The topography of the northern part of the Oquirrh Mountains is shown on the following 7l/2- minute quadrangle maps: Mills Junction, Garfield, Magna, Tooele, Bingham Canyon, and Lark. The southern part of the range is shown on the Stockton and Fairfield 15-minute quadrangles.
ACKNOWLEDGMENTS We deeply appreciate the assistance of colleagues who helped provide and assemble the data for this report: Rudolph W. Kopf, William J. Moore, and Mackenzie Gordon, Jr., helped measure stratigraphic sections; Helen M. Duncan, Mackenzie Gordon, Jr., Raymond C. Douglass, and Ellis L. Yochelson col lected many of the fossils and made all of the fossil determinations; and comments by Norman J. Silber- ling and Ralph L. Miller have materially helped to improve the presentation of these data. We grate fully acknowledge also the helpful criticisms of Alien H. James and John E. Welsh of the Kennecott Copper Corporation and the use of Welsh's extensive stratigraphic and paleontologic data (Welsh and 80 MILES James, 1961). Their interpretations, however, do I not fully agree with all of our interpretations. FIGURE 1. Principal mountain ranges in the Great Basin GEOLOGIC SETTING region in northwestern Utah. The area covered by the dashed rectangle (area of figs. 2 and 4) includes the The Oquirrh Mountains are in north-central Utah Oquirrh Mountains and South Mountain. (fig. 1) in the eastern part of the Great Basin. The range is chiefly made up of folded and thrust-faulted Roberts, 1963). However, the thickness and age of sedimentary rocks of Paleozoic age that have been these units vary from place to place, and the sedi intruded by rocks of Tertiary age and later uplifted mentary characteristics of key beds cannot he traced and tilted eastward by basin and range faulting. Of with certainty across thrust faults in the Oquirrh lesser extent are volcanic rocks of Tertiary age that Mountains or from range to range elsewhere in the crop out along the central part of the east side of Great Basin. the range. The authors are convinced that structurally the Most of the 12,000-18,000 feet of upper Paleozoic Oquirrh Mountains make up a part of the imbricated strata exposed in the northern and central parts of upper plate of the Charleston-Nebo thrust plate, the Oquirrh Mountains consist of varying combina which is exposed in the southern part of the adja tions of carbonate- and quartz-rich clastic sediments cent Wasatch Mountains (Crittenden, 1961; Roberts ranging in age from Late Mississippian through and others, 1965). Near Bingham two thrust faults, Permian. These in large measure constitute the the North Oquirrh and Midas,2 separate thr^e struc- Oquirrh Formation of Gilluly (1932) or the Oquirrh Group of Welsh and James (1961). The lithology of 2 The North Oquirrh thrust was mapped independently by .lames. the Oquirrh Group in the range (as well as in many Smith, and Welsh (1961. p. 5S) and by Roberts and Tcoker (1961, other places in the Oquirrh basin of deposition) can p. 40) and jointly named. A second fault, the Midas thrust, was first mapped in thp Lark mine by geologists of the United States Smelting, generally be divided into three distinct units: (1) a Refining, and Mining Co.. where It was called the North fault. In 1951 lower clastic limestone, (2) a medial unit consisting C. L. Thornburg recognized it as a thrust fault, but his information was not published (oral commun., 1965; Hewitt. 1966). In 1956 this of cyclical beds of limestone, shale, and sandstone, fault was mapped independently by Allan James and was1 named the and (3) an upper unit consisting predominantly of Midas thrust (James, Smith, and Welsh, 1961, p. 62). To avoid con fusion of a North thrust fault with the similarly named North Oquirrh interbedded quartzite and sandstone (Tooker and thrust, the name Midas is retained in this report. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A3
112° 30' 15' 112°00' EXPLANATION
SEDIMENTARY ROCK 40°45' SEQUENCES
Intrusive porphyry
Contact
Fault Dashed where approximately located
A A A A A A Thrust fault Dashed where approximately located. Sawteeth on upper plate -ft- Normal Overturned Axis of anticline
Normal Overturned Axis of syncline 40° 15'
5 MILES i i i I
FIGURE 2. Sketch map of the Oquirrh Mountains and South Mountain showing the locations of the Rogers Canyon, Bingham, and Curry Peak sequences. tural blocks containing at least two distinct sedi that the rocks on South Mountain, a transverse mentary sequences3 (figs. 2, 3). Tooker believes range adjoining the Oquirrh Mountains on the west, may constitute a separate structural block. The North Oquirrh thrust, which separates the 8 The term "sequence" is used here in the sense of Silberling and Roberts < 19R2. p. 6) as "units of major rank * * * set apart from Rogers Canyon sequence on the upper plate from the underlying or overlying sequences by unconformities * * * . Sequences are discrete rock units, some of which, though lithologirally distinct. more disturbed but possibly related sequence on the were deposited under much the same environmental conditions." lower plate, tentatively called the Curry Peak A4 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH sequence, strikes nearly southeast across the range, exposes two sets of folds on imbricate thrust fault dips northward about 35°, and is offset locally by structures, one striking northwestward and the normal faults. In the upper plate of this thrust, other northeastward. asymmetric folds plunge northeastward and are Granite, granite porphyry, and monzomte stocks locally overturned southward; thus, the apparent and dikes, which intrude the sedimentary rocks in movement on the thrust was from the northwest or the central and southern parts of the Oquirrh Moun north. The Midas thrust, separating the Bingham tains, have been described by Boutwell (1905), Gil- and Curry Peak sequences, strikes northwest-south luly (1932), Schwartz (1947), Stringhart (1953), east and dips about 45° SW. Asymmetric folds in the James, Smith, and Welsh (1961), and Peters, James, upper plate plunge northwestward and are locally and Field (1966). The Bingham and Last Chance overturned to the northeast; they indicate, there stocks, the largest intrusive bodies, are exposed in fore, that movement on the thrust was from the the central part of the Bingham mining district in southwest. The complexly folded and faulted, strati- the east-central part of the range. Other intrusive graphically incomplete Curry Peak sequence locally bodies crop out in and near the Ophir, Stockton,
BINGHAM SEQUE'NCE
FORMATION SYSTEMS MEMBER GROUP SERIES SYSTEM
^ c TO o £ TO £1 rr^sTv^ E X . - .V-.-:/-;^:: : o m LL. > ROGERS CANYON SEQUENCE :-VA:'-'-vv/ ^ & ? 2 \WX\ ig Q_ FORMATION ' . ': -.' : '£ : E SYSTEMS MEMBER (0 S. SYSTEM SERIES GROUP .c a. m 0) :#f-,.--:^.:' Q. 60 c < :: : :. : : : . /. : n<* ^ z: i i i o o randeur .' ' :' - .' 7 ' z: -* ^"^ .c § c v- -P*
Shale
- * ^^- Eroded top Covered base Age correlation
0 2000 4000 FEET
VERTICAL SCALE
FIGURE 3. The Rogers Canyon and Bingham sequences in the Oquirrh Mountains showing relative proportions and general character of lithologic units and their structural relationship to the Curry Peak sequence. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A5 and Mercur mining districts in the southwestern flanks of the Oquirrh Mountains and extends over part of the range (Gilluly, 1932). Tertiary extrusive much of the adjoining western Traverse Mountains. flows, breccias, and water-laid tuffaceous rocks, which have been described by Gilluly (1932) and PREVIOUS TERMINOLOGY AND RECOMMENDED CHANGES Smith (1961), are found in two distinct areas on the margins of the central part of the Oquirrh The Oquirrh Formation has been studied in sev Mountains (fig. 2). The smaller of these two areas eral localities in the central and southern parts of lies at the northeast base of South Mountain; the the Oquirrh Mountains during the past 70 yesrs larger lies 12 miles to the east along the eastern (fig. 4), but only recently in the northern part.
112°30' 112°00' EXPLANATION
SEDIMENTARY 40° 45' ROCKS
Marine rocks
IGNEOUS ROCKS i^^A :;&i\i s- ^ v > !*".»*«** Extrusive rocks Intrusive rod s m General area of measured section
Approximate location of measured section
STRAT1GRAPHIC SECTIONS CITED: 1. Mercur district Spurr (1895) 2. Bingham district-Keith (1905) 3. Stockton-Fairfield-Gilluly (1932) 4. West Canyon Nygreen (1958) 5. Lewiston Peak Bissell (1959) 6a. Butterneld Peaks-Welsh and James (1961) and this report 6b. South Mountain Welsh and James (1961) 7a. West Canyon-Middle Canyon Welsh and Jamei? (1961) and this report 7b. Markham Peak Welsh and James (1961) and this report 8. Eogers Canyon-Tooker and Roberts (1961) and this report 9a. Black Rock Canyon-Tooker and Roberts (1961) and this report 9b. Kessler Canyon-Little Valley-Tooker and Roberts (1961) and this report 10. Coon Canyon-Tooker and Roberts (1961) and this 40°15' report 11. Soldier Canyon Tooker, Gordon, and Roberts 5 MILES inthis report
FIGURE 4. Sketch map of the Oquirrh Mountains showing the location of type and reference sections. A6 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Many formational and member names have been sections 1 and 2). Because these rocks have subse applied to the formation in the southern part of the quently been reassigned by later workers to the range; the complex evolution of stratigraphic ter Oquirrh Formation as defined by Gilluly (1932), the minology shown in figure 5 is summarized chrono name Bingham Quartzite is here considered aban logically in the following paragraphs. doned. Keith also designated several prominent lime In 1895 Spurr referred to rocks at the Mercur stones in his Bingham Quartzite as members and mining district as the Great Blue Limestone and the lentils. Among these are the Tilden (which h^ desig overlying upper intercalated series (fig. 5, section nated the Petro on pis. 1 and 2) and Phoenix Lime 1). Keith (1905) named the rocks in the immediate stone Lentils and the Butterfield, Lenox, Jordan, vicinity of the Bingham mining district the Bing Commercial, Highland Boy, and Yampa Limestone ham Quartzite, but he was not able to designate a Members. He suspected that the last four members top or bottom to the formation; part of the Bingham represented only two units, a fact since substan Quartzite is now known to correspond to the upper tiated (Hunt, 1924, p. 861). These names and others part of Spurr's upper intercalated series (fig. 5, used in the mines to designate marker b^ds we
EXPLANATION
Age correlation Incomplete section Welsh and James (1961) (Composite at Lithologic correlation Eroded contact 6a, 6b, and 7a) Kirkman | Formation | 7 SERIES LJ VERTICAL SCALE Clinker Th s report SYSTEM Formation (Composite at 3 6a, 7a, and 7b)
Ke.th (1932) (1905 .^x~-v^-^i Formation c tu p. 33-35, \ ,-' -2 pis. 1 and 2) ..- ' 'c \ ^sr~-^^~ E ro E o > f» f \ / tu ro v> Members: i ,' , c ^ c Yampa \ (» a E Limestone *, / ,' 0) ^ 1 Highland \ Bingham 00
FIGURE 5. Development of upper Paleozoic rock-stratigraphic divisions in the Bingham sequence. Section numbers indicate locations in figure 4. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A7 herein consider informally named marker beds Mountains north of Lewiston Peak is believed to be rather than formally named units of member rank. invalid. Gilluly (1932) formally named the Oquirrh For Welsh and James (1961) elevated the Oquirrh mation. He placed the base at the top of the Manning Formation of Gilluly (1932) to the Oquirrh Group. Canyon Shale (fig. 5, section 3), a lithologically un We support this designation because the Oquirrh certain transitional boundary, but did not define the consists of thick but extremely variable litholoTic top as it is not exposed in the southern part of the units that can be recognized elsewhere in the Gr^at Oquirrh Mountains. He estimated the exposed thick Basin and Wasatch Mountains. The relationships of ness of the formation to be 16,000-18,000 feet, but the lithologic units require a complex nomenclature. he did not designate a type section. All faunas col Welsh and James restricted the Oquirrh Group to lected by him from the southern part of the Oquirrh rocks of Pennsylvanian age and included in it four Mountains proved to be Pennsylvanian, but Bissell formational units, from oldest to youngest, the (1936), Baker (1947), and Welsh and James (1961) Maple, "White Pine," Butterfield, and Bingham recognized Permian faunas from Oquirrh strata Mine Formations (fig. 5, section 6). nearby in the Wasatch Mountains and South Moun tain. Nomenclatural difficulties and our attempt here to Nygreen (1958) was the first to study the lower emphasize comparable regionally recognizable litho part of the Oquirrh Formation in detail in the logic units now prompts us to modify that forma southern Oquirrh Mountains area; he named the tional terminology. The lower part of the Maple lower limestone unit the West Canyon Limestone Formation is a lithologically distinct clastic lime Member (fig. 5, section 4). We retain this name, stone that Nygreen (1958) named West Canyon but raise it to formational rank the West Canyon Limestone Member; it is herein raised to formation Limestone. Nygreen (1958) also used the term rank. The cyclic limestone, shale, and sandstone of "Sandy Oquirrh" for the overlying strata. This term the upper part of the Maple closely resemble com is not considered a formal name. parable beds in the overlying White Pine and But Bissell (1959) described five time-stratigraphic terfield Formations, which are herein combined into subdivisions of the Oquirrh Formation in the south a single formation. (The formational name White ern Oquirrh Mountains in the vicinity of Lewiston Pine is now known to be preempted because of prior Peak (fig. 5, section 5) ; their boundaries coincide usage for an upper Paleozoic formation in Nevada.) with those of the provincial series of the Pennsyl Owing to confusion arising from the fact that the vanian. These units are well exposed south of Ophir, Butterfield Limestone of Keith (1905) occurs in the where they are broken and offset by numerous faults. "White Pine" Formation of Welsh and James but As defined by Bissell, these units did not have litho not in the Butterfield Formation, the combined unit logically recognizable tops and bottoms, which dis is here renamed the Butterfield Peaks Formation qualifies them as rock-stratigraphic units (Code of (fig. 5, section 7). Finally, the Bingham Mine For Stratigraphic Nomenclature, Art. 4). Although it is mation of Welsh and James (1961) is broadened to difficult to trace individual beds, generally recog include all of the comparable predominantly qur.rt- nizable lithologic units in the West Canyon Lime zite-sandstone beds of Pennsylvanian age above the stone and the lower part of the Butterfield Peaks Jordan marker bed; as such it includes some ba.ds Formation can be traced northward from the Lewis- considered to be of Early Permian age by Welsh and ton Peak area to West Canyon and can be correlated James (1961). The formation is terminated upward with their stratigraphic and age equivalents. A Mor by erosion and the Midas thrust fault. Thus, the row to Des Moines age is established for these rocks Oquirrh Group is defined in the Oquirrh Mountains throughout the lower part of the Bingham sequence to denote rocks that possess a distinctive three-part on the basis of the fusulinid, brachiopod, coral, and lithologic succession that ranges in age from Early bryozoan assemblages (Mackenzie Gordon, Jr., H. to Late Pennsylvanian. M. Duncan, and R. C. Douglass, this report, and Welsh and James (1961, p. 8), following Keith written comm., 1965). This age designation conflicts (1905), suggested names for individual prominent with the age designation Morrow through Virgil limestone beds in the Bingham mining district but reported by Bissell (1959), an age designation said that, "In a later paper the individual limestones based on fusulinids. BisselPs (1962, p. 37, 40, and will be formally named." We propose here to derig- 43) suggestion of abnormal thickening of the strati- nate them informal marker beds; they are locally graphic section in the southern part of the Oquirrh very important ore-forming horizons in the Bing- A8 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
8-10
Tooker and Roberts _ n _ (1961) 0-iU Q_JQ This report f Tooker and Roberts § (1963) -£>, = Grandeur Po 7 1 £oE Member g Permian £c3E Member __.- -""""" U-
Pennsylvanian and PPo6 Kessler Permian Canyon Upper Formation member
PlPOg
o. c P o O re Po F fc 4 u_ sz °
8 § Middle Pennsylvanian Erda member Formation
-3
Po2
Lake Point Limestone Lower IPOj --..
Mississippian Green cr Ravine Formation
Unnamed Canyon (?) formation Shale ______
EXPLANATION
Age correlation
Lithologic correlation
Incomplete section
Eroded contact
0 1000 2000 FEET I I I I I VERTICAL SCALE
FIGURE 6. Development of upper Paleozoic rock-stratigraphic divisions in the Rogers Crnyon sequence. Composite of sections measured in localities 8, 9a, 9b, and 10 (fig. 4). UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A9 ham mining district but are often difficult to trace sequently revised (Tooker and Roberts, 1963, p. outside the district. E33) into a lower, middle, and upper series of dis Above the Oquirrh Group, Welsh and James tinctive mappable units. The lower shale and lime (1961) also named two younger units, the Permian stone, tentatively called the Manning Canyon (?) Curry and Clinker Formations, and designated Shale (Tooker and Roberts, 1961), was later desig overlying even younger rocks as the Permian Kirk- nated an unnamed formation when the pre-Manning man, Diamond Creek, and Park City Formations. Canyon age of the shale was confirmed (Tooker and More recent mapping of the Curry Peak sequence Roberts, 1963, p. E33). An unnamed unit was desig rocks in the structurally complex area north of the nated the Grandeur Member of the Park City For mining district by Tooker and Roberts (unpub. mation following the usage of Welsh and James data) has shown these rocks to be lithologically (1961, p. 4). similar to rocks of the Rogers Canyon sequence although they are locally highly altered and sheared, REVISED UPPER PALEOZOIC STRATIGRAPHY and their fossils destroyed. We have not been able Revision of the Oquirrh Formation to the rank to confirm the Early Permian age for these rocks of Oquirrh Group and its subsequent division into that was reported by Welsh and James (1961), who lithologically distinct formational units in ttn correlated them with the type Curry and Clinker Oquirrh Mountains permits us to make systematic Formations on South Mountain. There is a similar regional stratigraphic correlations. Several correla ity of lithology and age between the Kessler Canyon tive lithologic formational units have already been Formation of the Rogers Canyon sequence, the un designated elsewhere. The Round Valley Limestone named upper quartzite unit of the Curry Peak and Weber Quartzite in the Wasatch Mountains sequence, and the Bingham Mine Formation of the (Crittenden, 1959) represent the lower limestone Bingham sequence. Their separation is based largely and middle cyclical limestone, shale, and quartzite on the structure discontinuities and their separa shelf facies of Pennsylvanian age. The Ely Lime tion by the North Oquirrh and Midas thrust faults. stone of eastern Nevada contains a similar lower The Grandeur Member of the Park City Formation, limestone and overlying cyclic limestone, shale, and however, is restricted to the upper plate of the North quartzite basin unit of Pennsylvanian age; thes^ Oquirrh thrust and is in the Rogers Canyon beds in turn are overlain by the Arcturus Forma sequence. We find no rocks equivalent to the Kirk- tion containing sandstone of Early Permian age (A . man Limestone or Diamond Creek Sandstone in the Brokaw, oral commun., 1964). The revision of th? Bingham sequence. The formational units that have stratigraphic division into two main sequences cf been correlated with the Kirkman Limestone and the Oquirrh Group in the Oquirrh Mountains, the Diamond Creek Sandstone [type localities are in the Rogers Canyon and Bingham sequences, is briefly Timpanogos sequence (Tooker and Roberts, 1963) described in the following sections and is shown in in the Wasatch Mountains] and with the Clinker figure 3. The type sections of the Rogers Canyon and Curry Formations of Welsh and James (1961) and Bingham sequences are designated, respectively, [type localities 'are on South Mountain], which the Rogers, Black Rock, and Kessler Canyons, at the Welsh and James (1961) reported in the Curry north end of the range, and the West, Middle, and Peak sequence, are not considered here. Because of Bingham Canyons, in the vicinity of the Bingham as yet incompletely understood internal structural mining district. The type section of the Oquirrh and stratigraphic complexities, the irregular altera Group is designated the composite of the type sec tion of strata, and the scarcity of well-preserved tions of its formations in the Bingham sequence. fossils in Curry Peak sequence rocks and their super ficial resemblance to rocks of the Rogers Canyon ROGERS CANYON SEQUENCE sequence, we defer further discussion of the strati The Rogers Canyon sequence, named for the area graphy of these lower plate rocks. of excellent exposures of these rocks in and adjr.- Tooker and Roberts (1961) mapped and described cent to Rogers Canyon at the northwest end of the the stratigraphic units of the Rogers Canyon range, is divided into four new formations. The sequence at the north end of the Oquirrh Mountains. Green Ravine Formation at the base is overlain by Changes in stratigraphic terminology of these rocks the Oquirrh Group, consisting of the Lake Poirt are summarized in figure 6. The informal recog Limestone and the Erda and Kessler Canyon For nition of seven mappable units of the Oquirrh For mations. The Grandeur Member of the Park City mation (Tooker and Roberts, 1961, p. 24) was sub Formation (Tooker and Roberts, 1963) overlies the A10 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Oquirrh Group with apparent conformity, but there a characteristic which is common in the cyclically may have been an erosion interval separating them. bedded Lake Point Limestone of the Oquirrh Group.
GREEN RAVINE FORMATION TYPE SECTION OF GREEN RAVINE FORMATION (see fig. 4, section 8) The Green Ravine Formation, here named for West side of Kessler Peak from 4,700-ft altitude in unnamed drainage south of KSL-TV television transmitter tramway exposures near the mouth of Green Ravine (fig. 4, line northeast across Green Ravine to unnamed drainage section 8), is composed of a basal 290 feet of inter- north of hill whose altitude is 5,244 ft, SEV± sec. 1, T. 2 S., bedded limestone and calcareous shale section over R. 4 W., and 2VFR4 sec. 6, T. 2 S., R. 3 W., Garfield lain by more massive cherty and sandy limestone. quadrangle, Utah The formation, whose previous informal designa [Measured by K. W. Tooker and R. J. Roberts] tions are shown in figure 6, is exposed only in the Thidtnens core of the Kessler anticline (Roberts and Tooker, (ft) 1961, p. 40). The type section of the formation is Oquirrh Group: on the west side of Kessler Peak at the north end Lake Point Limestone Conformable contact. of the Oquirrh Mountains, south of the mouth of Green Ravine in the SE*4 sec. 1, T. 2 S., R. 4 W., Green Ravine Formation: and the NW^4 sec. 6, T. 2 S., R. 3 W., Garfield quad 12. Argillaceous limestone, limestone, cherty lime stone, and bioclastic limestone, interbedded; rangle, Utah. medium to dark gray; weather medium gray The total thickness of the Green Ravine Forma to tan and buff; locally variegated; thin to me tion is uncertain because the base is concealed by dium bedded; clastic limestone is crossbedded; alluvium at the range front; a thickness of about shale partings are found in the limestone; 1,400 feet was measured in the exposed part of the sparse layered chert nodules are present; limestones contain abundant brachiopods, type section. The formation is conformably overlain corals, bryozoans, and crinoids (USGS colln. by the Oquirrh Group. 16333-PC, 21132-PC, 17144-PC, and 20254- The Green Ravine Formation is mostly a lime PC) ______-_ 215 stone and consists of two parts. The lower part is 11. Limestone, medium-gray; weathers medium dominantly 1-2-foot-thick limestone beds and shale light gray to light gray; thin to medium layers. The limestone is medium and dark gray to bedded; locally platy; interbedded thin- bedded cherty limestone, crossbedded bio- light olive gray or yellowish gray and is locally very clastic limestone, and argillaceous limestone; fossiliferous; the shale is black and dark gray to shale partings throughout unit; abundant olive gray. In the lowest part, variegated argillace productid brachipods, Caninia corals, and ous limestone is composed of rounded medium-dark chaetetiform bryozoans (USGS colln. 27256- gray crystalline limestone "nodules" that are as PC, 16331-PC, 17143-PC, 20253-PC, 27257- PC, 16330-PC, 20258-PC, 21131-PC, 21130- much as 3 inches in average diameter; the nodules PC, 20248-PC, 16329-PC, 20249-PC, 21251- are embedded in a medium-light-gray silty to sandy PC, 20250-PC, 20252-PC, and 16332-PC) __ 331 carbonate matrix. The lower contacts of individual 10. Cherty (banded) limestone, dark-gray; weath beds are commonly scoured and may indicate short ers light gray; thin to medium bedded; inter- erosion intervals. Thin beds and partings of shale layered bioclastic limestone in basal part; between thicker limestone layers in the lowest ex black chert nodules present; abundant Ca posed part of the formation locally show well- ninia corals (USGS colln. 16335-PC) ___ 82 developed cleavage. 9. Limestone, dark-gray; weathers light gray; The upper part consists of medium-bedded to mas medium to thick bedded; interbedded thin sive 2-3 foot-thick medium-gray locally fossiliferous arenaceous often bioclastic limestone, argil laceous limestone, shale, and black cherty limestone and banded nodular black cherty limestone limestone (nodules in bands and irregular at the base, and interbedded medium- to thick- lenses) ; sparse coral fauna. Lower half of bedded fossiliferous limestone and thin- to medium- unit is mostly covered slope; section crosses bedded argillaceous and fossiliferous limestone at a fault of small but unknown displacement, and a small part of the section may be the top. The upper contact of the formation is placed missing ______500 above a thick series of argillaceous and fragmented- fossil limestones that underlie a crossbedded lime 8. Limestone and shale, interbedded; medium dark gray and gray; weather light gray; stone that contains quartz sand; this sandy lime thin to medium bedded; bioclastic limestone stone is characterized by brown-weathering wispy limestone lenses and shale partings in the sand lenses or streaks in a gray limestone matrix limestone. Unit is mostly covered 145 UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH All
Thickness localities. The lower part may correlate with one (ft) of the shaly units of the Great Blue Limestone. 7. Shale, dark-gray to black; weathers medium dark gray; thin bedded and fissile; calcare OQUIRRH GROUP ous.. Unit is mostly covered slope ______17 The Oquirrh Group in the Rogers Canyon 6. Shale and limestone, interbedded; dark gray sequence consists of three new formations: the Lake . and black; weather light olive gray; thin to Point Limestone and the Erda and Kessler Canyon medium bedded; ferruginous stains along bedding; platy. Shale parts of unit are most Formations. ly covered slope. Abundant bryozoans, brach- iopods, and crinoids in limestone layers LAKE POINT LIMESTONE (USGS colln. 20247-PC, 20246-PC, 20243- The Lake Point Limestone is here named for the PC, 21129-PC, and 20228-PC) ______61 small farming community of Lake Point imme 5. Limestone, yellowish-gray; weathers yellowish diately south of the Great Salt Lake; the nearby orange and tan; thick bedded; sparse light- northwestern ridge of the Oquirrh Mountains in the gray chert nodules ______8 Mills Junction and Garfield quadrangles is also 4. Limestone intraformational conglomerate, called Lake Point. These rocks previously were medium-gray; matrix weathers dark yellow designated an unnamed unit, which subsequently orange, and rounded limestone fragments weather light gray; medium to thick bedded; was informally referred to as the lower member of shale partings locally ______5 the Oquirrh Formation (fig. 6). The rocks crop out in the core of the Kessler anticline 1 mile east of 3. Limestone and arenaceous and argillaceous limestone, interbedded; light gray and light Lake Point, on the north side of Lake Point Ridge, olive gray; weather grayish orange; thin in the upper part of Bates Canyon, on the upper bedded ______34 plate of the North Oquirrh thrust fault at Nelson 2. Bedded chert, pale-yellowish-brown; weathers Peak, and in small downfaulted klippen on the lower olive gray and grayish orange ______2 plates of the thrust near the mouth of Bates Canyon (Tooker and Roberts, 1961, pi. 6; Welsh and James, 1. Arenaceous limestone, olive-gray; weathers light olive gray; thin bedded; locally contains 1961, pi. 2). brownish-gray chert lenses in upper part _ 17 The type section of the formation is on the west side of Kessler Peak and extends from the bottom Total thickness measured 1,417 Covered at base by alluvium, faults. of an unnamed ravine at an altitude of 5,200 feet northeastward to near the top of the hill whose The Green Ravine Formation contains an abun altitude is 6,231 feet in the NE*4 sec. 6, T. 2 S., R. dant, well-preserved brachiopod, coral, and bryozoan 3 W., and SW^ sec. 31, T. 1 S., R. 3 W., of the fauna of Late Mississippian (fairly early to late Garfield quadrangle, Utah (fig. 4, section 8). The Chester) age. Mackenzie Gordon, Jr., and H. M. formation is 1,700 feet thick in the core of the Kess Duncan in the section on biostratigraphy and cor ler anticline. The Lake Point Limestone conform relation list and discuss details of fossil collections ably ( ?) overlies the Green Ravine Formation and is from the type locality, their biostratigraphic rela conformably overlain by the Erda Formation. The tions, and correlation with similar rocks elsewhere. upper contact is at the base of the lowest red-brown- They separate the formation into three parts: a weathering quartzite bed in the Erda Formation. pre-Caninia Zone containing a predominantly bryo- The rocks are chiefly interbedded medium-gray zoan-brachiopod fauna; the Caninia, Zone with light-gray- to tan-weathered medium-grained thin- corals and chaetetiform bryozoans predominant; to medium-bedded limestone and massive (thick- and a post-Caninia Zone with brachiopods pre bedded) gray limestone; locally the limestone is dominant. These rocks may be correlative with those cherty and contains bioclastic sand material in cross- in the upper part of the Great Blue Limestone in bedded arenaceous layers, thin-bedded to parting the Bingham sequence near the Ophir mining dis (very thin) argillaceous layers, and carbonaceous trict and with those in the lower part of the Dough shale beds and partings. The lower 350 feet consists nut Formation in the Mount Raymond sequence mostly of 1-3-foot-thick shale partings and shaly (Tooker and Roberts, 1963) in the Wasatch Moun limestone intervals in dense platy medium-bedded tains. The Green Ravine, however, is neither litho- limestone and arenaceous limestone that locally are logically similar to the Great Blue Limestone nor cherty and very fossiliferous. The beds in the upper to the overlying Manning Canyon Shale in the type 1,387 feet contain more-massive detrital cliff-form- A12 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH ing limestone and interformational conglomerate Thickness (ft) with interbedded cherty, argillaceous, bioclastic clastic limestone; sparse brachiopod limestone and calcareous sandstone and sparsely fauna ______71 fossiliferous limestone beds (figs. 7, 8). A typical 11. Argillaceous and arenaceous limestone and sedimentary cycle consists of a lower predominantly interbedded shale; dark gray; weather shaly or argillaceous limestone unit that is succeeded medium gray; thin to medium bedded; by a dominantly clastic calcareous (often bioclastic) local bioclastic limestone and carbonace sandstone, a calcitic arenaceous limestone, a cross- ous shale partings and lenses; nodular black chert layers; shale layers produce bedded wispy quartz and calcitic arenaceous lime mostly covered slope (USGS colln. stone, and a cherty limestone. The cycle is generally 23855-PC) ______79 completed by a bedded chert layer. 10. Calcareous sandstone, medium-gray; weath TYPE SECTION OP LAKE POINT LIMESTONE (see fig. 4, section 8) ers reddish brown to buff; medium bedded; crossbedded; light-tan chert Southwest ridge of hill where altitude is 6£31 feet, from nodules ______6 5,200-ft altitude to about the 6,160-ft altitude in NEV^ sec 6, 9. Limestone, argillaceous limestone, arenace T. 2 S., R. 3 W., and SW% sec. 31, T. 1 S., R. 3 W. Garfield quadrangle, Utah ous limestone, and cherty limestone, in terbedded; medium gray to dark gray; [Measured by E. W. Tooker and R. J. Roberts] weather tan to light gray; medium bed ThicTcness ded; subordinate lenses and thin beds of (ft) carbonaceous shale, and banded and Oquirrh Group: crossbedded calcareous sandstone and Erda Formation. bioclastic limestone; black chert nodules Conformable contact. and lenses. Unit locally forms cliffs; lo Lake Point Limestone: cally is fossiliferous (USGS colln. 23854- PC) ______S99 12. Arenaceous limestone, dark-gray; weathers light gray; thin to medium bedded; 8. Chert and interbedded argillaceous lime interlayers of thin argillaceous limestone, stone partings and layers; medium gray; black nodular cherty limestone, and bio- weather yellowish brown ______3
FIGURE 7. Typical exposures of Rogers Canyon sequence. View eastward between Rogers and Big Canyons, west side of the north end of the Oquirrh Mountains. Included are the basal Green Ravine Formation and the Oquirrh Group, consisting of the Lake Point Limestone and Erda and Kessler Canyon Formations. Also indicated are the Bonneville and Provo shore levels of Lake Bonneville, the Kessler anticline, the Lake Point thrust fault underlain by Erda Formation strata, and points a, b, and c shown in figure 8. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A13
Thickness (It) 7. Limestone, arenaceous limestone, and ar stone; irregular layers of nodular black gillaceous limestone, interbedded; medi chert in limestone; abundant, brachio um to dark gray; weather light gray to pods, corals, and bryozoans (USGS colln. tan and yellowish brown; thin to medium 16323-PC, 17147-PC, 16322-PC, and bedded; locally massive; fossiliferous 16319-PC) ______154 limestone and carbonaceous shale part 4. Fossiliferous limestone, dark-gray; lime ings; locally thin crossbedded bioclastic stone weathers medium gray, corals limestone; black chert nodules in layers weather brown; medium bedded; Oryg- and lenses; abundant, brachiopods, mophyllum! (colonial coral) (USGS corals, and bryozoans (USGS colln. colln. 16318-PC, 17146-PC, and 20259- 17150-PC, 17148-PC, 17149-PC, and PC) ______5 16324-PC) ______426 3. Limestone, variegated medium- and dark- 6. Arenaceous limestone, light-gray; weathers gray; weathers light gray and tan; fine brown to tan; medium bedded; medium grained; thin to medium bedded; are grained ______11 naceous limestone and shale layers and 5. Limestone, dark-gray; weathers light gray; partings; brachiopods abundant (USGS medium bedded; interlayered thin bedded colln. 21140-PC) ______48 argillaceous limestone, carbonaceous 2. Limestone, medium-gray; weathers yellow shale, and crossbedded bioclastic lime- ish tan to light gray, locally irregularly variegated light gray and medium gray; medium bedded to massive; cliff former; contains shale partings. Thin green- weathering chert layers at top contain Rhipidomella nevadensis (USGS colln. 21139-PC and 21141-PC) ______98 1. Limestone, argillaceous limestone, and are naceous limestone, interbedded; medium gray; limestone and argillaceous lime stone weather light to medium gray, and arenaceous limestone weathers tan; thin to medium bedded; locally crossbedded. Upper 85 ft of unit contains medium- bedded limestone intraformational con glomerate that consists of medium-dark- gray limestone clasts in tannish-gray limestone matrix; forms cliffs above a in figure 8. Lower beds of unit contain the first appearance of brown-weathered quartz grains set in light-gray carbonate matrix (characteristic of arenaceous limestones above the Green Ravine For mation). Local chert nodules and shale layers and partings occur throughout unit. Brachiopods locally abundant (USGS colln. 16340-PC, 17145-PC, 21134-PC, 21135-PC, 17031-PC, 21139- PC, 21138-PC, and 21137-PC) ______437
Total thickness measured ______1,737 Conformable contact. Green Ravine Formation. The Lake Point Limestone locally contains an abundant, generally well-preserved silicified bra- chiopod, coral, and bryozoan assemblage. The posi tions of the collections are shown in the strati- FIGURE 8. General features of the lithology of the lowermost graphic section and in table 2. In their detailed dis part of the Lake Point Limestone. View northeast up ridge between Green Ravine and Rogers Canyon. General location cussions, Gordon and Duncan have delineated two of reference points a, b, and c is shown in figure 7. faunal zones, the Rhipidomella nevadensis Zone in A14 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
the lower part of Late Mississippian (late Chester) the Kessler anticline, and the Coyote and Bates syn- age, and the Rugoclostus Zone in the upper two- clines. The exposures extend southward in a sinu thirds of Early Pennsylvanian (Morrow) age. An ous line as far as Bates Canyon, where they end intermediate, poorly fossilized shaly limestone zone against the North Oquirrh thrust fault. The Erda within the Rhipidomella, nevadensis Zone contains Formation is cut off east of the crest of the range specimens of Archimedes, which resemble those in by the Garfield fault. the Manning Canyon Shale of the Bingham sequence. The type section of the Erda Formation is on the Thus Gordon and Duncan correlate the lower part west side of Kessler Peak and extends from the hill with Upper Mississippian rocks and the upper part that is 6,231 feet in altitude northward across the with Lower Pennsylvanian strata, the actual bound center of sec. 31, T. 1 S., R. 3 W., Garfield quad ary lying within unit 3 of the type section. rangle, Utah, crossing Rogers Canyon, up toward The faunas indicate, therefore, that the lower 540 the ridge point that is 7,521 feet in altitude on Lake feet of the Lake Point Limestone is of Late Missis Point Ridge as far as the 6,800-foot contour. Here sippian age and that it is equivalent in age to parts the formation is 3,606 feet thick and is conformably of the Manning Canyon Shale in the Bingham and overlain by the Kessler Canyon Formation. The Timpanogos sequences and to the upper part of the upper contact of the Erda is at the base of the first Doughnut Formation in the Mount Raymond thick tan-brown-weathering, cliff-forming quartzite sequence (Tooker and Roberts, 1963, p. E35). The unit (fig. 6; Tooker and Roberts, 1961, p. 30) below uppermost 1,200 feet is of Early Pennsylvanian age the interbedded calcareous quartzite, orthoquartzite, and is believed to be correlative with the lower part and ferruginous sandstone beds that characterize of the Oquirrh Group in the Bingham sequence and the Kessler Canyon Formation. with the Round Valley Limestone in the Mount The Erda Formation is characterized by cyclically Raymond sequence. No break in the pattern of sedi repeated layers of medium-gray limestone and me mentation between Mississippian and Pennsylvanian dium-dark-gray ledge-forming argillaceous limestone time has been recognized in the Rogers Canyon and light-brown slope-forming carbonaceous shale, sequence. This Lake Point Limestone section is a cinnamon-brown to tan calcareous quartzite, and continuous series that includes rocks of both Mis variegated tan and light-brown crossbedded calcare sissippian and Pennsylvanian age. ous sandstone (fig. 9). These rocks stand in marked contrast to the predominantly grayish limestone ERDA FORMATION beds below and massive red-brown-weathered quart The Erda Formation of the Oquirrh Group is zite layers above. The quartzite and limestone beds here named for the Erda siding on the Union Pacific crop out as prominent ribs along gentle slopes or as Railroad; this siding is west of the mouth of Bates cliffs on steep slopes. The shale and argillaceous Canyon and immediately southwest of the promi limestone form intervening covered slopes. Cycli nent cliff exposures of these rocks on the west sides cally repeated thin beds that are as much as 1 foot of Kessler, Coon, and Nelson Peaks in the Mills thick occur in the lower part of the section (Tooker, Junction and Garfield quadrangles, Utah (fig. 4, 1962, p. 357), whereas these beds are medium to section 8). These rocks had previously been included thick (2-4 ft) in the middle and upper parts of the in the middle member of the Oquirrh Formation section. However, in individual beds within each (fig. 6). The .formation is well exposed along the major cycle, minor repetitions are observed. For north and west sides of the range and is lithologi- example, a limestone bed 2 feet thick is often com cally similar to altered rocks exposed on the pedi posed of thin repetitive layers of sandy limestone ment 2 miles west of the range at Adobe Rock near (containing detrital quartz, clastic limestone, and Mills Junction (Tooker and Roberts, 1961, pi. 6). fossil-fragment sands), cherty limestone, and argil Erda Formation strata are also exposed in the laceous limestone. A comparable shale bed com structurally discordant lower plates of the Lake monly contains thin dense arenaceous limestone, Point thrust fault at the range front (fig. 7) north bedded chert, and calcareous quartzite layers and of Green Ravine (Roberts and Tooker, 1961, p. 45). lenses; and a similar quartzite bed commonly con The rocks dip steeply northward and are locally tains limestone and shale partings separating indi overturned to the south on the north side of the vidual quartz laminae. A complete major cycle may range (Roberts and Tooker, 1961, p. 39); south of be 60-100 feet thick. Lake Point, on the western side of the range, the Silica-cemented quartzite (quartzose sandstone or strata are exposed in the Mills Junction syncline, orthoquartzite) is not abundant and commonly UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A15
FIGURE 9. Upper two-thirds of the Erda Formation and the basal part of the Kessler Canyon Formation. Views nortb of Rogers Canyon; point X is common to both photographs. The cyclic lithology of the Erda Formation can be seen. The massive quartzite beds (dark gray) at the base of the Kessler Canyon Formation are exposed at the top of the ridge. Z indicates three-layer limestone marker unit 4. Point Y locates unit 25, light-gray crinoid marker bed at the top of prominent cliff-forming cherty limestone. A16 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness grades into calcareous sandstone. This calcareous (ft) sandstone contains detrital limestone and calcite 30. Calcareous sandstone, brown-gray; weath grains in addition to quartz and feldspar and is ers medium grayish tan to red brown; cemented by calcite and silica cement. The rock is occurs as massive beds ______82 hard and fractures conchoidally. It effervesces in 29. Limestone and argillaceous limestone, in weak acid and weathers to a sandy, locally punklike terbedded; light to dark gray; weather surface as much as half an inch thick. to tan- and gray-striped beds; thin bed Limestone ranges from a dense fine-grained ap ded to massive; locally black chert nod parently precipitated rock to a crossbedded, coarse ules ; chert, fissile shale, and quartz sand stone partings ______122 grained, clastic rock. Irregular layers and lenses of chert nodules are common, and shale partings are 28. Calcareous quartzite, light-grayish-brown; weathers tan brown; medium bedded. abundant. Most of the interbedded shale is carbo Unit contains a thin-bedded 4-ft gray naceous and generally grades vertically into argil limestone at 16 ft ______111 laceous limestone. 27. Limestone and cherty limestone, interbed Argillaceous and cherty limestones in the Erda ded; dark gray; weather medium light Formation are abundantly fossiliferous; the fossils gray; medium to thick bedded; locally consist of brachiopods, bryozoans, corals, fusulinids, black chert nodules in the upper lime stone layers; locally fossiliferous (USGS gastropods, and crinoids. In general fossils are less colln. 20232-PC, 20235-PC, 20236-PC, abundant and less well silicified in the Erda For and f22568) ______160 mation than they were in the Lake Point Limestone. 26. Calcareous sandstone, brownish-gray; TYPE SECTION OF ERDA FORMATION (see fig. 4, Section 8) weathers tan to rusty brown; thick bed ded; well jointed; sparsely crossbedded^ 18 Traverse south to north across the center of sec. 31, T.I S., R. 3 W., Garfield quadrangle, Utah 25. Crinoidal limestone, medium-light-gray; weathers light gray; thin bedded; inter- [Measured by K. W. Tooker and R. J. Roberts] laminated thin sandstone and chert lay Thickness ers and lenses; bryozoans at base (USGS (ft) colln. 16328-PC) ______Oquirrh Group: 24. Cherty limestone and limestone, interbed Kessler Canyon Formation. ded; dark gray; weather medium light Conformable contact. gray; thin to medium bedded; interlayers Erda Formation. of bioclastic limestone and shale; lo 38 35. Cherty limestone, dark-gray; weathers me cally fossilif erous (USGS colln. f 22570) dium gray; thin to medium bedded in 23. Cherty limestone, limestone, arenaceous lower part, medium to thick bedded in limestone, and argillaceous limestone, in upper part; black chert nodules and terbedded; medium gray; weather medi lenses; carbonaceous shale partings. um light gray; thin to medium bedded; Middle part of unit is medium-gray platy abundant thin shale partings; local bio- argillaceous limestone ______147 clastic limestone layers; bryozoan and fusulinid fauna in upper part ____ _ .______140 34. Calcareous quartzite, quartzose sandstone, and limestone, interbedded; gray brown 22. Argillaceous limestone, arenaceous lime and medium gray; weather brownish tan stone, and limestone, interbedded; medi and light gray; banded; medium bedded um gray to brownish gray; weather to to massive; locally crossbedded. Quartz light brown gray and gray on fluted ite and sandstone contain thin argillace crossbedded surfaces; bioclastic lime ous limestone and carbonaceous shale stone and shale layers and partings; layers and partings ______267 sparse black chert nodules at base, in 33. Cherty limestone, dark-brownish-gray; crease upward in section ______90 weathers light gray to tan ; thin to medi 21. Carbonaceous shale and argillaceous lime um bedded; black chert nodules and lay stone, interbedded; medium gray ; weath ers. Middle part of unit contains argil er dark brownish gray; thin bedded to laceous platy limestone 2-6 in. thick _ 93 platy. Unit is poorly exposed on covered 32. Calcareous quartzite, light-brownish-gray; slope ______13 weathers light grayish brown; medium 20. Calcareous quartzite, light-brown; weath bedded to massive ______48 ers tan to rusty brown; crossbedded __ 12 31. Argillaceous limestone, dark-gray; weath 19. Cherty limestone, arenaceous limestone, ers light grayish brown and tan; thin to limestone, argillaceous limestone, and medium bedded; in many places, platy _ 39 fine-grained limestone, in sequence up- UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A17
Thickness Thickness (ft) (ft) ward; medium gray; weather brownish lenses occur throughout unit; rocks are gray, slate-gray to light-gray and tan locally fossiliferous (USGS colln. bands; thin to medium bedded; local 17163-PC) ______112 layers of gnarly black chert nodules; 10. Limestone, black cherty limestone, and are local bioclastic limestone and shale part naceous limestone, interbedded; medium ings; Prismopora (bryozoan), corals, dark gray; weather light gray and tan; brachiopods, and fusulinids abundant banded; medium to thick bedded; fossil (USGS colln. 17165-PC and 17166-PC)_ 85 iferous (USGS colln. 17159-PC, and 18. Calcareous quartzite, light-gray; weathers 17161-PC) ______140 tan to reddish brown; medium to thick 9. Calcareous quartzite, light-brown-gray; bedded; thin crossbedded calcareous weathers brown to tan; medium bedded at sandstone parting layers; buff and black base, massive in upper part; interbedded chert pods 1-6 in. thick ______74 calcareous sandstone and arenaceous 17. Limestone, dark-gray; weathers to gray- limestone; locally crossbedded; black and tan-striped plates; argillaceous at chert nodules in basal layers ______56 base, more arenaceous and cherty in up 8. Limestone, medium-dark-gray; weathers per part ______145 medium light gray; medium to thick bed 16. Calcareous quartzite, light-brown-gray; ded; locally platy and argillaceous; weathers light brown; thin bedded to carbonaceous shale partings; sparse laminar; limestone partings; local chert black chert nodule layers; fossiliferous pods ______43 (USGS colln. 17158-PC) ______90 15. Cherty limestone and shale, interbeddcd; 7. Bedded black chert; limestone partings __ 6 dark gray; weather medium light gray 6. Limestone, dark-gray; weathers light gray; and tan; thin bedded; calcareous sand thin bedded at base and medium to thick stone and carbonaceous shale partings in bedded in upper part; black chert nod limestone; local chert nodule layers; fos- ules; arenaceous and argillaceous lime siliferous; productid brachiopod zone __ 136 stone layers and partings; sparse fossils 14. Limestone, shale, and calcareous sandstone, (USGS colln. 17157-PC) ______193 interbedded; dark gray; weather to tan, 5. Calcareous quartzite, tan; weathers tan to light-gray, and dark-gray bands; thin to buff and brown; banded; crossbedded; medium bedded; thin layers of gnarly interlayered thin limestone and chert in black chert nodules and layers; argilla lower one-third of unit ______71 ceous limestone layers and shale part 4. Fossiliferous limestone, arenaceous lime ings locally; spiriferid brachiopods in stone, cherty limestone, argillaceous lime upper part (USGS colln. 16327-PC) __ 46 stone, and calcareous quartzite, interbed 13. Limestone, cherty limestone, and carbo ded; olive gray and medium gray to naceous limestone, interbedded; dark brownish gray; weather light gray and dark gray and black; weather light to brown; thin to medium bedded. Unit medium bedded; upper 40 ft mainly ar- forms prominent three-layer light-gray- thin to medium-bedded limestone and weathering marker unit. Clastic lime finely laminated platy shale; black irreg stone and quartzite are commonly cross- ular chert nodule layers and lenses. Shale bedded. Carbonaceous shale, thin chert, part of unit forms covered slopes. Fos and bioclastic limestone form parting sils occur locally throughout limestone layers within beds. Unit is locally fos parts, zone of Desmoinesia muricatina siliferous; large horn corals, brachio (USGS colln. 17164-PC, 16325-PC, and pods, and crinoids abundant in the top 16326-PC) ______303 22 ft and in the middle part (USGS colln. 17155-PC and 17156-PC) _____ 119 12. Calcareous quartzite, tan; weathers tan to 3. Limestone, arenaceous limestone, argillace brown; thin to medium bedded; inter- ous limestone, and calcareous sandstone, bed thin argillaceous limestone _____ 71 interbedded; light olive gray and medi 11. Argillaceous limestone, limestone, and are um dark gray; weather to variegated naceous limestone, interbedded; dark grayish orange and tan and light gray; gray and gray to brown gray; weather thin to medium bedded; thin crossbedded light grayish tan and brown; thin to sand layers and shale partings. Thin- to medium bedded; upper 40 ft mainly ar medium-bedded interformational con gillaceous; thin layers and lenses of cal glomerate in middle part of unit. Fos careous sandstone and carbonaceous siliferous at top; fauna includes Pro- shale partings spaced irregularly fustdinella (USGS colln. 17154-PC and throughout unit; black chert nodules and f20486) ______131 A18 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness anticline and as south-dipping beds on the ridge (ft) 2. Fossiliferous limestone, argillaceous lime east of the Garfield smelter at the north end of the stone, and cherty limestone, interbedded; range. On the upper slopes of Coon Peak in the tan and olive gray to dark gray; weath Coyote and Bates synclines, the lower and ruddle er yellowish gray to light gray; thin to parts of the Kessler Canyon Formation are exposed. medium bedded; crossbedded arenaceous The upper part of the formation is exposed through limestone, thin carbonaceous shale, black chert, and calcareous sandstone parting out the area east of the Garfield fault and noHh of layers and lenses. Fossils include spirif- the North Oquirrh thrust, where it forms sym erid and productid brachiopods, bryo- metrical low-amplitude folds. Because of interrup zoans, and corals ______57 tions in exposures, the type section is in two parts 1. Quartzite and calcareous quartzite, inter- (fig. 4, sections 9a and 9b). The lower l,03f feet, bedded; light tan to light gray; weather section 9a, (Tooker and Roberts, 1961, p. 30) was grayish brown to reddish brown; thin measured on the west side of Black Rock Canyon (1-2 in. thick) to medium bedded; locally crossbedded bioclastic limestone layers in a traverse from the NE^4 SE^i sec. 30, T. 1 S., and argillaceous limestone partings. Unit R. 3 W., northwest to the ridge at the south edge of locally forms cliffs and contains inter- NE^4 sec. 30. The upper 3,436 feet, section 9b, bedded limestone, black nodular cherty (Tooker and Roberts, 1961, p. 30) was measured in limestone, and arenaceous limestone, Kessler Canyon southeast from the center SE*4 sec- which are medium gray to light brown, weather light gray to brown, are thin to 27, T. 1 S., R. 3 W., at an altitude of 5,400 feet, medium bedded, and are locally massive across the hill whose altitude is 5,984 feet and (up to 5 ft thick). Fossils locally abun across the tributary to Little Valley Wash to the dant, include brachiopods and Chaetetes hilltop west of the hill whose altitude is 5,341 feet (USGS colln. 16334-PC, 17151-PC, 17152-PC, and 17153-PC) ______344 in the center of the west side NE*4 sec. 35, T. 1 N., R. 3 W. The upper contact is at the base of a promi Total thickness measured ______3,606 nent light-gray-weathering abundantly fossiliferous Conformable contact. limestone containing a well-preserved brachiopod, Oquirrh Group, Lake Point Limestone. coral, bryozoan, and crinoid assemblage (Tooker and Roberts, 1961, p. 31). Fossil faunas from the Erda Formation, which The lower third of the Kessler Canyon Formation are listed in table 3 and are described in detail by is predominantly interbedded massive orthotuart- Gordon and Duncan, consist of several faunal as zite and cherty limestone, and the upper two-thirds semblages that include brachiopods, corals, bryo- is ferruginous and dolomitic sandstone, dolomite, zoans, and fusulinids of Middle Pennsylvanian age. and fusulinid-bearing chert. The orthoquarteite is These strata, therefore, are approximate age equiva light gray tan and weathers tan and light brown to lents of the lower and middle parts of the Oquirrh orange brown; it is fine grained to sandy, medium Group in the thick Bingham and Timpanogos bedded to massive, generally well jointed, locally sequences in the Oquirrh and Wasatch Mountains well banded, commonly crossbedded, and often con and of the thin Weber Quartzite in the Mount Ray tains interbedded calcareous, ferruginous, or dolo mond sequence in the Wasatch Mountains (Tooker mitic sandstone and shale partings. Thin (1 ft or and Roberts, 1963 >. less) chert layers and lenses occur locally in the section. The cherty limestone is light gray, thin KESSLER CANYON FORMATION bedded, and contains either black or tan chert The Kessler Canyon Formation of the Oquirrh nodules. Group is here named for the most prominent north- The upper part of the formation is poorly ex flowing stream at the north end of the Oquirrh posed; the beds are thin- to medium-bedded inter Mountains in the Garfield quadrangle. These rocks bedded orthoquartzite, calcareous, ferruginous and previously were designated informal units and sub dolomitic sandstone and dolomite, in contrast to sequently were included in the upper member of the thick silica-cemented orthoquartzite and cherty Oquirrh Formation (fig. 6). The formation is ex limestone in the lower part of the formation. Some posed on both sides of the Garfield fault (Tooker dolomite beds are now sedimentary breccia. Worm and Roberts, 1961, pi. 6). West of the fault, the trails are common in the ferruginous sandstorm, and lower part of the formation crops out on north- poorly preserved fusulinids occur both in ck^omite facing dip slopes on the north flank of the Kessler and in bedded chert layers. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A19
Thickness The true thickness of the formation is uncertain (ft) because the upper part of the measured section 30. Dolomitic sandstone, light-gray, platy to crosses the Arthur fault (Roberts and Tooker, 1961, thin-bedded; interbedded calcareous p. 44). Although the relative displacement on the quartzite; sparse, poorly preserved fu fault initially did not appear to be large, subsequent sulinids; exposures poor __ 36 geologic mapping suggests that as much as 1,500 29. Fusulinid chert, light-gray; weathers light to dark brown; weathered surface is feet of section may be cut out at this point. Thus the pitted; fusulinids collected from unit 1 total thickness of the Kessler Canyon Formation is mile north (USGS colln. f20479) ____ 13 probably in excess of 4,300 feet. 28. Calcareous quartzite, dolomite, arenaceous dolomite, dolomite breccia, interbedded; TYPE SECTION OF KESSLER CANYON FORMATION tan gray and light gray; weather tan to (see fig. 4, section 9b) buff and light brown; locally variegated Center SE^A sec. 27, T. 1 S., R. 3 W., southeast to center west pink to gray green; thin bedded. Weath side NEK sec. 35, T. 1 S., R. 3 W., Garfield quadrangle, Utah ered quartzite is pitted and punky at the rock surface; black chert nodules and [Measured by B. W. Tooker and R. J. Roberts] lenses occur in arenaceous dolomite. Unit Thickness is poorly exposed on covered slopes _ 253 (ft) Park City Formation: 27. Arenaceous dolomitic limestone, dolomite breccia, ferruginous sandstone, and cal Grandeur Member. careous quartzite, interbedded; very Conformable contact. poorly exposed ______94 Oquirrh Group: 26. Ferruginous sandstone and brecciated are naceous dolomitic limestone, interbedded; Kessler Canyon Formation (upper part) : tan and light gray; weather light brown 37. Dolomitic limestone and interbedded sand and buff; locally cherty; pitted weath stone, calcareous quartzite, and shale; ered surface on thin interbedded calcare light gray and tan; weather dark brown ous quartzite; poorly preserved bryo- and orange; thin to medium bedded; zoans and brachiopods in limestone, and limestone brecciatcd locally. Unit is poor worm trails in sandstone. Unit is poorly ly exposed. Fusulinids collected in sand exposed ______-____ 63 stone from the same unit nearby (USGS 25. Calcareous quartzite, tan to buff; weathers colln. f21018) ______260 dark red brown; thin to medium bedded; 36. Calcareous quartzite and ferruginous sand interbedded thin ferruginous sandstone stone, interbedded; tan and medium and fusulinid chert layers. Section brown; weather brown and dark brown; crosses small normal fault at base with medium bedded; locally crossbedded; unknown but small displacement ____ 74 sparse bedded chert; worm trails in sand 24. Arenaceous dolomitic limestone, light-tan; stone; locally chert contains poorly pre weathers light gray to buff; medium served fusulinids) ______250 bedded; contains coarse crinoidal sand 35. Calcareous sandstone and calcareous stringers. Unit contains medial layer of quartzite, dolomitic limestone and ferru thick calcareous quartzite. Cherty fusu ginous sandstone, interbedded. Unit is linid layers occur near the base _ _ 48 covered slope ______270 23. Ferruginous sandstone, yellow-brown; 34. Calcareous quartzite, arenaceous dolomitic weathers to medium dark brown with limestone, and ferruginous sandstone, soft punky surface; interbedded thin hard ribs of orthoquartzite. Unit is interbedded; tan to buff and gray; poorly exposed on slopes _ - 69 weather light to dark brown and light gray; medium bedded; dolomitic lime 22. Limestone, light-gray; weathers buff; thin stone is locally brecciated; worm trails bedded; poorly preserved fusulinids ____ 3 occur in sandstone; brachiopods in thin 21. Calcareous quartzite, ferruginous sand dolomitic limestone layers. Unit is mostly stone, dolomitic sandstone, and ortho covered. Normal fault of unknown dis quartzite, interbedded; tan and light placement at 565 ft may cut out as much gray; weather buff and limonite brown; as 1,500 ft of section ______568 thin to medium bedded; often platy; 33. Fusulinid chert; interbedded dolomitic quartzite is pitted, and sandstone is limestone and calcareous sandstone __ 12 punky on weathered surfaces. Locally, there are7 bedded chert layers. At 92 ft 32. Calcareous quartzite, tan; weathers olive unit contains poorly preserved fusulinids. brown. Unit is covered slope ______29 Unit is most covered (USGS colln. 31. Fusulinid chert, poorly exposed ______10 f22588) ______-_ 288 A20 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness Thickness (ft) (ft) 20. Fusulinid chert with crinoid steins; white; Lower part: pitted; fusulinid molds only ______1 16. Limestone, argillaceous limestone, anc1 arenaceous limestone, interbedded; tar 19. Calcareous quartzite, calcareous and ferru gray; weather yellow brown; thin bed ginous sandstone, and cherty dolomite, ded; jointed; locally, chert nodule lay interbedded; light gray and tan to light ers at base 33 brown; weather light gray to tan, lo cally reddish brown. Beds are thin to 15. Cherty limestone and interbedded arena medium bedded and are locally color ceous limestone ___ 22 banded. Locally, weathered surfaces of 14. Calcareous quartzite, Orthoquartzite, fer quartzite are pitted and form a thick ruginous sandstone, and cherty lime- punky surface rind. Dolomite breccia stone, interbedded; light gray to gray beds 1-6 ft thick are interspersed brown; weather dark brown, gray tar throughout the unit, and two thin fusu to yellowish and reddish brown; thir linid chert beds occur in the top 40 ft. to medium bedded; pitted weathered Unit is poorly exposed and mostly cov surfaces; cherty limestone contains- ered ______395 dense sandstone partings in the middle 18. Orthoquartzite, calcareous quartzite, and part of the unit ______212 calcareous sandstone, interbedded; light 13. Dolomitic sandstone, light-gray; weath gray; weather banded light gray and ers tan to buff; medium bedded ____ 3 buff; locally consist of coarse sand; pitted weathered surfaces. Unit poorly 12. Dolomitic limestone, light-tan; weathers- exposed ______61 buff; thin bedded; medium grained; minor chert lenses. Unit contains me 17. Orthoquartzite and calcareous quartzite, dial dark-tan arenaceous dolomite interbedded; light gray to tan; weather marker bed __ _ - 21 light to medium brown and dark brown in prominent alternating bands; pitted 11. Calcareous quartzite and ferruginous weathered surface that locally appears sandstone, interbedded; gray brown; to have ropy contortions; thin bedded weather tan brown and reddish brown; and platy; contain ferruginous and cal banded; medium bedded; quartzite ir careous sandstone and cherty limestone well jointed and contains sandstone interlayers and partings; worm trails in partings ___ __ 33 ferruginous sandstone near top of unit. Lower half of unit is covered slope ___ 639 10. Fossiliferous limestone, light-brown- gray; weathers tan to buff; thin to Total thickness measured ______3,436 medium bedded; local bioclastic lime stone layers; sparse black chert nod Oquirrh Group, Kessler Canyon Formation (lower part) . ules; abundant gastropod, brachiopod, bryozoan, and crinoid stem assemblage TYPE SECTION OF KESSLER CANYON FORMATION (USGS colln. 18486-PC and 18893- (see fig. 4, section 9a) PC) ______-______- 34 sec. 30, T. 1 S., R. 3 W., to center south 9. Cherty limestone, medium-gray; weath sec. 30, Gar field quadrangle, Utah ers medium light gray; thin bedded, locally laminar; small black chert- [Measured by E. W. Tooker and R. J. Roberts] nodules and lenses ____ _ 92 Thickness 8. Ferruginous sandstone and calcareour (ft) Fault. quartzite, interbedded; orange tan an
Thickness upper parts also are of probable Virgil (Late Penn- (ft) sylvanian) age (section on biostratigraphy and cor 6. Calcareous quartzite, tan; weathers dark brown; medium bedded; contorted relation, p. A49). Missouri age strata, so abundant warped "ropy" layers with tan- and in the Bingham sequence, were not found by us, and, brown-banded layers and pitted weath if present, are extraordinarily thinned or were ered surface ______75 eroded prior to deposition of Virgil strata. Gordon 5. Calcareous quartzite, quartose sandstone, and Duncan suggest that the lack of Missouri age and orthoquartzite, interbedded; tan; rocks has regional significance and compare it to weather tan to dark brown and yellow Steele's (1961) "Regional Middle Pennsylvanian ish brown; medium to thick bedded; well jointed; form cliffs and blocky unconformity." This suggests that sediments of the talus slopes; shale partings within Rogers Canyon sequence have a closer affinity with the quartzite ______97 those in the Confusion Range and eastern Nevada 4. Cherty limestone, medium-dark-gray; than those of the Timpanogos and Bingham weathers medium gray; thin bedded; sequences. black chert nodules. Unit is mostly covered slope ______28 Wolfcamp sediments are also missing in this sequence, and the Early Permian Park City strata 3. Calcareous quartzite, tan; weathers tan to reddish brown; thin to medium bed rest without angular unconformity on Virgil (?) ded; crossbedded, well jointed; inter- beds of the Kessler Canyon Formation. Similarly bedded thin calcareous sandstone __ 151 these rocks are absent in the Wasatch Mountains in 2. Ferruginous sandstone, orange-gray- the Mount Raymond sequence (Baker and others, brown; weathers brown; medium bed 1949). ded; argillaceous limestone partings; Gordon and Duncan suggest that this absence carinoid corals, brachiopod fragments^ 8 may indicate a period of nondeposition and erosion, 1. Orthoquartzite, light-gray-brown; weath a factor that gains some credence in our observation ers tan to light brown; medium bed ded; well jointed; locally crossbedded; locally of highly altered iron-stained zones in upper black chert layer at base in thin cal Kessler Canyon sediments as at the mouth of Coon careous quartzite layer ______58 Canyon perhaps evidence of weathering surfr°.es. The apparently conformable relation between the Total measured thickness of lower Kessler Canyon Formation and Grandeur Member part ______1,033 of the Park City Formation strata suggests that the Conformable contact. area was not undergoing uplift and erosion. It may Oquirrh Group, Erda Formation. have been awash, parts of the area emergent at Fossils are sparse and generally poorly preserved times to permit weathering action. in the Kessler Canyon Formation; only one collec PARK CITY FORMATION tion (USGS colln. 18486-PC) represents the for Rocks equivalent in lithology and age to thos^ in mation. A 35-foot-thick bed, unit 10, in the lower the basal part of the Park City Formation in the part (section 9a) contains an unusually fine as Wasatch Mountains, named originally by Boutwell semblage of abundant, large, well-preserved speci (1907), were recognized in the Oquirrh Mountains mens of gastropods, brachiopods, bryozoans and by Tooker and Roberts (1961, p. 32) and by Welsh long, nearly intact sections of crinoid stems. Most and James (1961, p. 4). These rocks, origirally of the upper two-thirds of the section, however, assigned to an informally named unit by Tooker and contains only sparse, poorly preserved, silicified Roberts (fig. 6), correspond to the Grandeur Mem fusulinids and occasional crinoid fragments in thin ber as it was defined in the Wasatch Mountains by beds of dolomitic limestone and bedded chert. Cheney, Swanson, Sheldon, and McKelvey (1959, The lower part of the formation has not provided P. 12). identifiable fossils, but J. E. Welsh (oral commun., 1961) reported fusulinids of Missouri (Late Penn- GRANDEUR MEMBER sylvanian) age from the lower Kessler Canyon For The Grandeur Member is exposed in Little Valley mation in the Coon Canyon syncline south of Coon syncline in Little Valley at the northeast end of the Peak. Fossils in the middle part are of probable Oquirrh Mountains and also in the Coon Canyon Virgil age according to Gordon and Duncan. The area (fig. 2). The unit is exposed discontinueusly poorly preserved chertified fusulinids found in the southward along the eastern range front and is cut A22 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness off by the North Oquirrh thrust fault (Tooker and (ft) Roberts, 1961, pi. 6). No outcrops are found west of 19. Dolomitic limestone, mottled gray; weath the Garfield fault. The Grandeur Member appears ers light grayish-tan; thin to medium to lie conformably on the Kessler Canyon Forma bedded; brachiopods abundant _____ 10 tion of the Oquirrh Group; overlying strata have 18. Dolomite, tannish-gray; weathers light buF been eroded. The member is locally unconformably gray; thin to medium bedded; banded overlain by Tertiary conglomerate and volcanic chert layers and lenses ______6 rocks (for descriptions see Tooker and Roberts, 17. Orthoquartzite and bedded chert, inter 1961, p. 32-34) . bedded; reddish brown; weather hema The Grandeur consists of thin- to medium-bedded tite red and mottled reddish gray; thin bedded; irregular layers; conspicuous fine- to coarse-grained arenaceous limestone, dolo shale partings ______59 mite, and dolomitic limestone interspersed with thin 16. Shale and calcareous quartzite, interbed shale and argillaceous limestone, phosphorite, chert, ded. Unit is mostly covered. Dark-gray orthoquartzite, and calcareous sandstone partings, phosporite nodules in light-brown thin lenses, and layers. The exposed thickness of the sandstone layers throughout unit ___ 81 member in section 10 (fig. 4) is about 760 feet. The 15. Phosphatic chert and shale, interbedded; member can be divided into three parts : a lower black and dark gray; weather bluish limestone 215 feet thick ; medial quartzite, dolomite, white to gray as surface coating on chert 1 sandstone, shale, chert, and phosphorite 284 feet 14. Dolomite and shale, interbedded; medium thick; and an upper dolomite and quartzite 261 feet gray; weather light gray tan; medium thick. These are lithologically comparable to the and thin bedded; brachiopods abundant 8 three parts in the type locality of the Grandeur 13. Shale, calcareous quartzite, and calcareous sandstone, interbedded; light grayish Member in the Wasatch Range. brown and dark gray; weather tan to REFERENCE SECTION OF GRANDEUR MEMBER OF PARK CITY light brown and medium gray; thin bed FORMATION (see fig. 4, section 10) ded, ribbon banded appearance _____ 14 12. Calcareous quartzite and sandstone, inter East of fork in Coon Canyon, north side in bedded; medium brownish gray; weather sec. 14, T. 2 S., R. 3 W., Garfield quadrangle, Utah tan to brown; thin to medium bedded; [Measured by E. W. Tooker] local phosphorite nodule zones; lacy tan Thickness chert; Orbiculoidea brachiopods. Unit i« (ft) mostly covered ______66 Unnamed conglomerate. 11. Orthoquartzite, medium-dark-gray; weath Unconformable contact, erosion interval. ers tan; medium bedded; brownish-blac1*" Park City Formation: chert nodules common ______7 Grandeur Member: 10. Quartzose siltstone, reddish-gray; weath 25. Dolomitic limestone, light-grayish-tan; ers tan; thin to medium bedded. Unit is weathers light tan to buff; medium bed mostly covered ______30 ded; tan chert nodules near base __ . _ 41 9. Dolomite medium-light-gray; weathers 24. Calcareous and ferruginous sandstone, in- light tan; medium bedded. Unit is mostly terbedded; reddish gray; weather brown covered slope ______18 to reddish brown; medium bedded; local ly, chert nodules. Unit is mostly covered- 55 8. Limestone and arenaceous limestone, ir- terbedded; light tan to brown; weather 23. Dolomitic limestone, light-grayish tan; tan; thin bedded; productid brachiopods. weathers light gray; medium bedded. Unit is mostly covered ______13 Unit is mostly covered ______7 22. Orthoquartzite and limestone, interbedded; 7. Cherty limestone, reddish-gray to brown; tan to light brown and light gray ; weath weathers light grayish brown; medium er tan; medium bedded; lacy chert lam bedded; dark reddish-gray chert nodules inae in limestone ______73 and lenses; brachiopods abundant. Unit poorly exposed; mostly covered ____._ 24 21. Calcareous quartzite, calcareous sandstone, and arenaceous dolomitic limestone, in 6. Limestone and arenaceous limestone, inter terbedded. Unit is mostly covered __ _ 45 bedded; brownish gray; weather tan; lo cally black chert nodules and lenses; bio- 20. Dolomite and dolomitic and ferruginous clastic limestone lenses common ____ 39 sandstones, interbedded; reddish brown; weather tan; thin to medium bedded; 5. Limestone and arenaceous (bioclastic) sanded weathered surfaces ______24 limestone; light brown gray; weather UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A23
Thickness OQUIRRH GROUP (ft) tan gray; medium bedded; gastropods, The Oquirrh Group rests conformably on the brachiopods, and crinoids abundant __ 8 Manning Canyon Shale of Mississippian and Penn- 4. Limestone and cherty limestone, interbed- sylvanian age and is divided into the West Canyon ded; gray; weather medium light gray; Limestone, the Butterfield Peaks Formation, and thin to medium bedded; abundant chert the Bingham Mine Formation (fig. 3). The Bingham nodules and lenses up to 4 inches thick_ 11 Mine Formation is divided into the Clipper Ridge 3. Fossiliferous limestone, medium-dark- Member and the overlying Markham Peak Member. gray; weathers light gray; thin to medi um bedded; local lacy tan chert beds; These rocks are of Pennsylvanian age. brachiopods, gastropods, and crinoid stems abundant ______12 WEST CANYON LIMESTONE 2. Argillaceous limestone and silty limestone, Nygreen (1958, p. 13-14) originally applied the interbedded; dark gray; weather medium name West Canyon Limestone Member to the basal dark gray; thin to medium bedded; brachiopods locally abundant ______78 clastic cyclic limestone unit of the Oquirrh Forma 1. Limestone, light-gray; weathers light tion in the Fourmile Canyon tributary of West Can gray; medium bedded; tan lacy chert yon on the east side of the Oquirrh Mountains in bands; bioclastic in part; brachiopods, the Fairfield quadrangle. We have raised this unit to bryozoans, and gastropods very abun formational status as the West Canyon Limestone. dant (USGS colln. 20240-PC, 20241-PC James Gilluly (oral commun., 1967) agrees that and 20242-PC in reference area and 19949-PC, 19948-PC, 22848-PC, 20238- these strata constitute a valid recognizable forma PC, from unit in Little Valley) _____ 30 tional unit in the Stockton and Fairfield quadrangles. The formation is exposed on the east limb of the Total thickness measured _. 760 Ophir anticline in Manning, Ophir, and Soldier Can Conformable contact. yons on the west side of the Oquirrh Mountains as Oquirrh Group, Kessler Canyon Formation. well as on the flanks of Long Ridge anticline in Fossils are abundant and well preserved in the West Canyon (Gilluly, 1932, pi. 12). In addition to lower limestone unit. The fauna in table 4 includes the type section shown by Nygreen (1958, p. 13) in bryozoans, crinoids, brachiopods, and gastropods of the El/2 sec. 23 and Wy2 sec. 24, T. 5 S., R. 3 W., probable late Leonard (Early Permian) age; Gor Fairfield quadrangle (fig. 4, section 4) and by Welsh don and Duncan in the section on biostratigraphy and James (1961, pi. 5), three nearly comparable and correlation describe the several collections, their reference sections by Roberts and Tooker in the biostratigraphic relation, and correlation. They con southern Oquirrh Mountains, in West Canyon, Sol clude that an unconformity occurs at the base of the dier Canyon, and at Lewiston Peak (fig. 4, section Grandeur Member that accounts for the absence of 5; ridge west of Lewiston Peak, sec. 29, 30, T. 5 S., Wolfcamp and part of the Leonard rocks in the R. 3 W., Fairfield 15-minute quadrangle) indicate a Rogers Canyon sequence. wide areal extent for the West Canyon Limestone BINGHAM SEQUENCE of the Bingham sequence. The West Canyon and The Bingham sequence, named for the Bingham Soldier Canyon reference sections are included to mining district in the central part of the Oquirrh afford a direct comparison of lithologies; the fauna Mountains where the most complete upper part of in Soldier Canyon are more abundant and better the Paleozoic stratigraphic section occurs, is the exposed (fig. 10) and preserved than those in West folded upper plate of the Midas thrust fault. The Canyon. lower part of the sequence is exposed only in a Contacts of the West Canyon Limestone with the small area in the Ophir mining district in the south underlying Manning Canyon Shale and the over ern part of the range. The rocks consist of lower lying Butterfield Peaks Formation are poorly ex Paleozoic formations ranging from Cambrian posed. Gilluly (1932, p. 32) stated that the Soldier through Mississippian in age; they were described Creek section of the Manning Canyon Shale, which by Gilluly (1932) and will not be discussed further he believed probably was most representative here. The upper thick series of sediments, the because it was least deformed by folding, appar Oquirrh Formation, which Gilluly did not subdivide, ently was conformable with, and transitional litho- was raised to group status and subdivided by Welsh logically into, limestones of the Oquirrh Formation. and James (1961). Their formational assignments In each of the areas where the section was mea are here modified and revised (fig. 5). sured, the base of the West Canyon Limestone is at A24 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Butterfield Peaks Formation
._«£ ' x/ ^r banning Canyon Shale : * fi.";i. '^ , m*.
FIGURE 10.' Typical exposures of reference section of the West Canyon Limestone and the basal portion of the Butterfield Peaks Formation in Soldier Canyon. View is westward toward spur on north side of the canyon along the east boundary of sec. 34, T. 4 S., R. 4 W., Stockton 15-minute quadrangle. the base of the continuous predominantly limestone bedded thin cherty argillaceous dense crystalline section that overlies a generally concealed shale limestone beds as much as 1 or 2 feet thick. Thin unit. The formation is also conformable with and calcareous quartzite beds or partially silica-cemented transitional into the cyclic shale, limestone, and cal calcareous sandstone, generally banded or cross- careous quartzite of the Butterfield Peaks Forma bedded, separate much thicker limestone strata. The tion. In each section, the upper contact is mapped limestone generally is medium dark gray; it weath at the base of a continuous, though variable in ers light and medium gray if pure or brownish gray thickness, crossbedded, silica- and carbonate- if arenaceous and contains tan and black chert nod cemented orthoquartzite and calcareous sandstone ules and lenses. The rocks are medium grained, con separating two less resistant limestone and argil taining coarse angular to subrounded sands, and are laceous limestone units. thin to medium bedded, ranging from less than 1 The West Canyon Limestone is 1,450 feet thick in foot to 3 feet in thickness. The calcareous quartzite the type section (Nygreen, 1958, p. 14, 39) and is is medium gray to tan; the sandy-weathered surface 1,436 feet thick in the reference locality in West rind is of variable thickness and is tan to light gray Canyon (section 6a). Comparable rocks are 1,180 brown. The quartzite is composed of detrital quartz feet thick at Lewiston Peak, and 1,060 feet thick in and calcareous sand grains cemented by silica and the Soldier Canyon reference sections. calcite. Evidence of small-scale rhythmic sedimenta The West Canyon rocks are principally cyclical tion may be seen in these rocks, although the en clastic arenaceous limestone composed of quartz vironment favored the formation of limestone. and calcite grains and fossil fragments and inter- Toward the upper contact of the formation, the cal- UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A25
careous quartzite beds become thicker and more Thickness (ft) abundant. 6. Arenaceous limestone, cherty limestone, FIRST REFERENCE SECTION OF WEST CANYON LIMESTONE and argillaceous limestone, interbedded; (see fig. 4, section 6a) medium gray; weather light gray; thin to medium bedded; black chert layers Ridge on north side of West Canyon, opposite Maple Canyon, and lenses; shale partings; local bioclas sec. 27, T. 4 S., R. 3 W., Fairfield tic limestone layers 43 quadrangle, Utah 5. Argillaceous limestone, arenaceous lime [Measured by E. W. Tooker and R. J. Roberts] stone, and dense limestone, interlayered; Thickness medium gray; weather light gray with (ft) brown streaks in coarser sand layers; thin Oquirrh Group: to medium bedded; local cherty limestone Butterfield Peaks Formation. and carbonaceous shale partings; cross- Conformable contact. bedded bioclastic limestone layers; West Canyon Limestone: abundant brachiopods (USGS colln. 14. Limestone, cherty limestone, and arenace 20330-PC and 21157-PC) ______231 ous limestone, interbedded; medium to 4. Limestone, medium-gray; weathers light gray; weather medium to light gray; gray; thin to medium bedded; coarse thin to medium bedded; black chert nod sandstone laminae irregularly distributed ules ; shale partings ; local bioclastic lime through the limestone; fossiliferous stone; sparse brachiopods ______201 (USGS colln. 21156-PC) ______80 13. Calcareous quartzite and limestone, inter- 3. Calcareous sandstone, brown-gray; weath bedded; brownish gray; weather tan to ers light brown; medium bedded _ 3 rusty brown; quartzite is medium bed 2. Limestone, arenaceous limestone, and ar ded and crossbedded; limestone is thin gillaceous limestone, interbedded; medi bedded, fine grained, and locally bio- um gray to brownish gray; weather light clastic ______15 to medium gray and tan; thin to medium 12. Arenaceous limestone, cherty limestone, ar bedded; crossbedded sandstone and car gillaceous limestone, and limestone, in- bonaceous shale lenses and partings; bedded; medium gray; weather light abundant bioclastic limestone; abundant gray; thin to medium bedded; local cross- brachiopods, bryozoan, crinoid, and An- bedding; black cherty lenses and nod tiquatonia coloradoensis assemblage ules; local shale partings and bioclastic (USGS colln. 20329-PC, 21154-PC, limestone beds; abundant brachiopods 21155-PC) ______262 (USGS colln. 20331-PC) ______87 1. Limestone and argillaceous limestone, in 11. Calcareous quartzite, tan; weathers rusty terbedded; medium dark gray; weather brown; medium bedded; crossbedded and brownish gray and medium gray; thin thinly laminated; well jointed ______11 to medium bedded; interlayered arenace 10. Cherty limestone, arenaceous limestone, ar ous and bioclastic limestone, cherty lime gillaceous limestone, and limestone, in stone, and carbonaceous shale; abundant terbedded; medium gray; weather medi fossils in cherty limestone. Unit is poorly um light gray; thin to medium bedded; exposed, mostly covered ______82 fine-grained dense silty limestone and platy shale partings ; black chert nodules Total thickness measured ______1,436 and thin irregularly layered brown- Conformable contact. weathering white chert; local bioclastic limestone layers; brachiopods abundant 347 Manning Canyon Shale.
9. Calcareous quartzite and calcareous sand SECOND REFERENCE SECTION OF WEST CANYON LIMESTONE stone, interbedded; medium grayish tan; (see fig. 4, section 11) weather medium light gray; medium bed ded; crossbedded and laminar bands; in- Begin at base of ridge on north side Soldier Creek lat 40° 25' layered limestone and shale partings __ 29 45", long 112° 16' 30", traverse N. 6° E. to ridgetop, then 8. Arenaceous limestone and argillaceous N. 40° E. to ridgetop west of peak 9075, sees. 26, 27, and limestone, interbedded; medium gray; 34, T. 4 S., R. 4 W., Stockton quadrangle, Utah weather medium light gray; thin bed [Measured by E. W. Tooker, Mackenzie Gordon, Jr., and R. J. Roberts] ded; irregular thin bioclastic limestone layers ______Thickness 32 (ft) 7. Calcareous sandstone, medium-gray; Oquirrh Group: weathers brown; fluted weathered sur Butterfield Peaks Formation. face; medium bedded; crossbedded __ 13 Conformable contact. A26 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
West Canyon Limestone: Thickness Thickness (ft) . _ (ft) 5. Limestone, argillaceous limestone, and 14. Limestone, arenaceous limestone, argillace shale, interbedded; light olive gray and ous limestone, interbedded; light gray dark gray; weather light gray; medium to dark gray and brownish gray; weath to thin bedded; shale partings and inter er light gray to tan; thin to medium bed bedded argillaceous limestone; sparse ded; locally interbedded black chert nod black chert nodular limestone; locally, ule layers, thin calcareous sandstone thin bioclastic limestone layers. Upper beds, and shale partings; locally platy; 30 ft is predominantly shale and mostly locally fossiliferous (USGS colln. 17170- covered ______-__ _ 80 PC) ______121 4. Argillaceous limestone, medium to dark- 13. Calcareous sandstone, dark-brownish-gray; gray; weathers dark brownish gray; weathers grayish brown; medium bed thin bedded and platy; interbedded black ded; black chert nodules in the upper nodular chert and calcareous sandstone 1.6 ft ______4 layers at base; fossiliferous, brachiopods and bryozoans (USGS colln. 17168-PC)_ 5 12. Limestone, dark-brownish-gray and medi um-gray ; weathers medium gray to med 3. Limestone, medium-olive-gray; weathers ium light gray; thin to medium bedded; light olive gray; medium bedded; in part, nodular chert layers and dark-brown bi- platy and well-join ted blocky float; forms oclastic sandy streaks in upper 4 ft; low cliffs along section line ___ 25 er part contains interbedded bioclastic 2. Limestone, arenaceous limestone, argillace limestone and argillaceous limestone lay ous limestone, carbonaceous shale, cherty ers and shale partings; lower 81 ft along limestone, and calcareous quartzite in line of section concealed due to faulting; terbedded with cyclic repetition; light Tertiary monzonite porphyry sill 28 ft olive gray, light gray to dark gray; thick underlies top 4 ft of unit _____ 153 weather medium gray to brownish gray 11. Calcareous quartzite, light-brownish-gray; and buff; thin to medium bedded; locally weathers tan; thick bedded; well jointed 12 crossbedded; bioclastic limestone and 10. Limestone, medium-dark-gray; weathers calcareous quartzite; thin shale layers and partings; locally at base of unit in medium gray; medium to thin bedded; terbedded argillaceous limestone and lenticular nodules of black chert 2 in. shale are fossiliferous; brachiopods thick and 6 in long; locally grades into (USGS colln. 17167-PC). The unit is thin bioclastic and shaley interlayers in mostly covered in lower 100 ft _____ 288 the upper part ______98 1. Argillaceous limestone, arenaceous lime 9. Limestone, argillaceous limestone, and stone, and calcareous quartzite, inter shale, interbedded; medium dark gray bedded ; olive gray to light tan; thin bed to brownish gray and dark gray; weath ded; irregularly interbedded ferruginous er light gray to grayish tan; thin to shale and arenaceous limestone; locally medium bedded; well jointed; calcare crossbedded and banded. The unit is ous sandstone in lower 3 ft; 1-2-ft mostly covered ______41 shale layers near the top are mostly cov ered ______48 Total thickness measured ______1,053 8. Limestone, dark-gray; weathers light gray; Conformable contact. medium bedded; in part, silty; in part, Manning Canyon Shale. arenaceous and bioclastic; locally sparse black chert nodules; locally, thin fine Fossils are locally abundant and similar to those grained dolomite lenses; abundantly fos found in the upper part of the Lake Point Lime siliferous locally; silicified bryozoans and brachiopods ______86 stone of the Rogers Canyon sequence, but are often fragmented in the argillaceous and flaggy limestone. 7. Arenaceous limestone, gray to brownish- gray; weathers light gray with brown The collections are located in the reference sections ish sandy streaks; medium bedded; lo and in table 5; a detailed description of the fauna cally poorly sorted sand particles; chert and its correlation is given by Gordon and Duncan nodules in middle part; fossiliferous, in the section on biostratigraphy and correlation. derbyid and spiriferid brachiopods Brachiopods typical of the Rugoclostus zone are (USGS colln. 17169-PC) ______33 most abundant, bryozoans are fairly common, corals 6. Limestone, medium-dark-gray; weathers light olive gray; thin bedded; argillace are very rare, mollusks are limited to a few scat ous limestone interlayers; sparse black tered pelecypods, and trilobites are present as rare chert nodules in upper part ______59 fragments. Nygreen (1958) reported finding the UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A27 fusulinid Millerella in the upper part. A Morrow ever, was measured up the ridge at the head of West age is suggested for the West Canyon Limestone. Canyon, westward along the ridge separating the The Mississippian-Pennsylvanian boundary lies in Middle and Settlement Canyons (fig. 11), and then the upper part of the underlying Manning Canyon northward across Middle Canyon west of the mouth Shale. of Left Hand Fork (fig. 4, section 7a). Here the BUTTERFIELD PEAKS FORMATION formation is 9,072 feet thick. The upper contact is The Butterfield Peaks Formation is here named at the base of a banded quartzite layer underlying for Butterfield Peaks, 3 miles south of Bingham in the Jordan marker unit (fig. 12). A reference sec the Fairfield quadrangle. The formation, which tion of the lower part of the formation, which con rests conformably on the West Canyon Limestone, tinues the West Canyon Limestone reference section includes the medial cyclic series of rocks of the and which also was the type section of the Butter- Oquirrh Group in the Bingham sequence. These field and White Pine Formations of Welsh and rocks formerly were believed to represent the upper James (1961, pi. 5), is on the north side of West part of the Maple Formation and all of the "White Canyon, opposite Maple Canyon, in the north center Pine" and Butterfield Formations of Welsh and part of sec. 27 and the south center part of sec. 22, James (1961) (fig. 5). The rocks crop out along the T. 4 S., R. 3 W., Fairfield quadrangle. A second ref Long Ridge anticline northwest of West Canyon and erence section of the lower part (3,900 feet) of the along the Pole Canyon syncline (fig. 2). The type Butterfield Peaks Formation measured in Soldier section of the Butterfield Peaks Formation, how Canyon, a continuation of the West Canyon Lime-
FIGURE 11. Typical exposures of the middle part of the Butterfield Peaks Formation as exposed in part of its type section along the skyline at the head of White Pine Canyon tributary of Middle Canyon. Cyclically repeated beds measured along the skyline ridge appear as prominent bands; light-colored beds are mostly calcareous sandstone and arenaceous and cherty limestone, darker beds are covered argillaceous limestone zones. A28 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
units grade into one another and locally weather in the form of ribs outlining crossbeds in the ortho quartzite or parallel bands in the calcareous quart zite. Limestones typically are medium dark gray, fine crystalline to medium sandy, and thin to medium bedded; they weather light gray. Thin black chert nodules and lenses locally band the rocks; thin coarse arenaceous layers, some of which are bioclas- tic and many of which are crossbedded, and inter- laminated shale and argillaceous limestone beds occur in the strata. Limestones in the lower part of the formation are very fossiliferous.
TYPE SECTION OP BUTTERPIELD PEAKS FORMATION (see fig. 4, section 7a) Ridge along the divide beginning at the head of West Canyon and between Settlement and Middle Canyons to point 8944 thence northeast to base of Middle Canyon, sees. 6, 7, 18, 19, 20, and 21, T. 4 S., R. 3 W., and sec. 12, T. 4 S., R. 4 W., Fairfield, Stockton, and Bingham Canyon quadrangles, Utah
[Measured by E. W. looker and R. J. Roberts]
Thickness (ft) Oquirrh Group: Bingham Mine Formation: Clipper Ridge Member. Conformable contact. Butterfield Peaks Formation: 50. Calcareous quartzite, orthoquartzite, and FIGURE 12. Typical exposures of the Jordan (limestone) calcareous sandstone, interbedded; tan marker bed (a thick cherty limestone) within the base of to light orange gray; weather light the Clipper Ridge Member of the Bingham Mine Formation brown; medium bedded to massive; in- at the type locality of the member in Middle Canyon. View terlayered thin- to medium-bedded are looking west toward W% cor. NE 1^ sec. C, T. 4 S., R. 3 W. naceous limestone and silty limestone; Bingham Canyon 7%-min. quadrangle. Light-colored rocks fossil fragments in limestone. Unit is at the base and top are calcareous quartzite. poorly exposed ______215 49. Arenaceous limestone, olive-gray; weathers light gray; thin to medium bedded; in- terlayered argillaceous and silty lime stone reference section, contains several important stone; fossil fragments ______11 fossil collections. 48. Calcareous quartzite and arenaceous lime The rocks are predominantly calcareous quartzite stone, interbedded; pale grayish orange; and silica-cemented orthoquartzite, calcareous sand weather light brown and olive gray; stone, and arenaceous, cherty, argillaceous, and fine interstratified with banded medium-bed ded orthoquartzite and thin-bedded ar grained dense limestones. The calcareous quartzite is gillaceous limestone. Unit is partly cov brown gray, fine to medium grained, medium to mas ered ______473 sive bedded, and locally may contain argillaceous 47. Orthoquartzite and calcareous quartzite, limestone laminations. In places the quartzite is interbedded; pale grayish orange; medi crossbedded and ripplemarked on bedding surfaces. um bedded to massive; crossbedded and It weathers tan to light brown to red brown. The banded ______9 silica-cemented orthoquartzite beds stand in promi 46. Calcareous quartzite and calcareous sand nent relief and have a hard vitreous weathered sur stone, interbedded; medium grayish tan; weather tan; medium bedded; banded; face; the carbonate-cemented calcareous quartzite locally crossbedded; interlayered thin beds weather, forming a soft outer surface rind of fossiliferous and bioclastic limestones. variable thickness up to one-third inch thick. These Unit is partly covered ______196 UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A29
Thickness Thickness (ft) (ft) 45. Arenaceous limestone, olive-gray; weath terlayered thin-bedded arenaceous and ers pale yellowish brown; thin bedded; cherty limestone, calcareous sandstone, poorly preserved fusulinids ______1 and silty and argillaceous limestone; USGS colln. f22576 from bioclastic sand. 44. Calcareous quartzite, calcareous sandstone, Unit is mostly covered ______392 arenaceous limestone, and argillaceous limestone, interbedded; quartzite is band 32. Argillaceous and cherty limestone, inter ed and crossbedded. Unit is poorly ex bedded; medium gray; weather tan and posed on slope ______-_-__ 231 light gray; thin bedded; platy. Cherty limestone contains both black and tan 43. Cherty limestone, medium-dark-gray; chert nodule layers ______- 236 weathers medium gray; thin bedded; small black chert nodules and layers; 31. Arenaceous limestone, medium-gray; grades downward into platy silty lime weathers light grayish brown; thin to stone without chert ______7 medium bedded; local bioclastic lime stone layers and shale partings; abun 42. Arenaceous limestone, brownish-gray; dant fusulinids found locally in lowe^ weathers yellowish gray; thin bedded; half (USGS coll. f22583 and f22584) __ 95 platy float ______51 30. Calcareovis quartzite and Orthoquartzite, 41. Orthoquartzite and calcareous quartzite, interbedded; tan; weather tan to buff; interlayered; light grayish orange and medium bedded; banded; locally cross- brownish gray; weather pale yellowish bedded; interlayered thin beds of calcar brown and yellowish gray; medium bed eous sandstone ______222 ded to massive; well jointed ______222 29. Cherty limestone and calcareous sand 40. Calcareous quartzite and arenaceous lime stone, interbedded; medium gray and stone, interbedded; locally crossbedded; light brownish gray; weather brownish fossil fragments in sandy layers in lime gray and tan; medium bedded; contain stone ______182 black chert nodule layers; interlayered 39. Arenaceous limestone; contains bioclastic thin platy argillaceous limestone in up limestone layers and poorly preserved per part; abundant bryozoans, spiriferid fusulinds; poorly exposed ______6 brachiopods, and crinoids in upper part _ 79 38. Calcareous quartzite and limestone, inter 28. Calcareous quartzite, light-grayish-tan; bedded. Unit is poorly exposed ______232 weathers tan; platy to massive bedded; 37. Limestone, silty limestone, and arenaceous interlayered Orthoquartzite and argilla limestone, interbedded; medium dark ceous limestone ______107 gray; weather light olive gray; thin to 27. Shale and argillaceous limestone, interbed medium bedded; banded layers contain ded; dark gray; weather tan; thin bed abundant brachiopods and bryozoans _ 140 ded; platy; contain sparse chert nodules; thin interlayers of arenaceous and silty 36. Cherty limestone, medium-dark-gray; limestone ______66 weathers dark yellowish brown; thin bedded to laminar; interlayered arena 26. Cherty limestone, medium-gray; weathers ceous and argillaceous limestone; black light gray; thin to medium bedded; in chert layers and nodules up to 6 in. thick. terlayered bioclastic limestone and argil Lower 20 ft grades into arenaceous lime laceous limestone; black chert nodules stone ______101 and irregular chert lenses; basal platy limestone; abundant shale partings; 35. Orthoquartzite, light-grayish-tan, medium- crinoids, bryozoans, corals, and fusuli bedded ______23 nids (USGS colln. 20308-PC, f22580, 34. Arenaceous limestone, calcareous quartzite, f22581, and f22582) ______308 calcareous sandstone, Orthoquartzite, and 25. Arenaceous limestone, calcareous quartzite, platy silty limestone, interbedded with and Orthoquartzite, interbedded; gray, cyclic repetition; medium dark gray and dark gray, and grayish tan; weather tan light grayish tan; weather medium light to grayish tan; thin to medium bedded; gray and olive gray; thin bedded to locally laminar ______41 thick bedded. Unit contains thin bioclas tic limestone layers. Unit is poorly ex 24. Orthoquartzite, light-grayish-tan; weath posed ______213 ers white to light gray; medium bedded 33. Orthoquartzite and calcareous quartzite, to massive; locally laminated with thin interbedded; light grayish tan to light calcareous limestone layers ______104 olive gray; weather tan to yellowish 23. Argillaceous limestone, shale, and lime brown; medium bedded to massive; pitted stone, interbedded; dark gray; weather and mottled on weathered surfaces; in- medium gray. Thin-bedded chert band A30 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness Thickness (ft) (ft) in shale in upper part of unit. Dolomite 12. Limestone, dark-gray; weathers medium breccia in middle part of unit. Unit is gray; medium bedded; interlayered ar poorly exposed ______68 gillaceous limestone in middle part; spiriferid brachiopods at base ______43 22. Orthoquartzite and calcareous sandstone, interbedded; grayish brown and medium 11. Orthoquartzite and calcareous quartzite, gray; weather grayish tan and brownish interbedded; brownish gray; weather gray; interlayered argillaceous limestone tan; locally laminar; in part medixun and cherty limestone parting layers __ 149 bedded to massive ______115 21. Limestone and shale, interbedded; dark 10. Limestone, dark-gray; weathers medixtm gray; weather medium gray; thin bed light gray; thin bedded to platy _____ 82 ded; locally contain bioclastic limestone 9. Orthoquartzite and calcareous quartzite, lenses ______85 interbedded; brownish gray; weather 20. Limestone, dark-gray; weathers light tan; medium bedded ______39 gray; thin to medium bedded; locally 8. Limestone, arenaceous limestone, and abundant black chert nodules in irregu cherty limestone, interbedded; arenace lar lenses and layers; thin bioclastic ous limestone and cherty limestone rre limestone layers. Thick-bedded chert zone brownish gray, limestone is mottled in middle part of unit. Bryozoans locally medium dark gray and dark gra.y; abundant in upper part (USGS colln. weather medium gray to grayish tan; 20307-PC) ______479 thin to medium bedded; locally platy; 19. Calcareous quartzite, argillaceous lime sparse brachiopods in lower half of unit_ 109 stone, calcareous sandstone, and lime 7. Calcareous quartzite, calcareous sandstone, stone, interbedded with cyclic repetition; silty limestone, arenaceous limestone, brownish gray and dark gray; weather cherty limestone, and argillaceous lime grayish tan and medium gray; thin stone, interbedded with cyclic repetition. bedded to massive ______133 Calcareous quartzite and calcareous 18. Arenaceous limestone and limestone, inter sandstone are grayish tan to brownish bedded; dark gray; weather brownish gray, weather sandy brown and tan (in gray; medium bedded; interlayered ar many places in variegated bands) are gillaceous limestone. 1-ft fault breccia at locally crossbedded, and are thin to base of unit. Fault displacement un medium bedded. Silty limestone, arena^e- known, but it does not appear to be very ous limestone, cherty limestone, and ar great. Brachiopods and prismoporoid gillaceous limestone are dark gray and bryozoans are present (USGS colln. medium gray, weather medium gr-T.y, 20306-PC) ______73 and are thin to medium bedded. Brachio- 17. Calcareous quartzite, gray-brown; weath pods are locally abundant (USGS colln. ers tan; medium bedded to massive; lo 20303-PC) ______-______612 cally banded and crossbedded; interlay 6. Calcareous quartzite, Orthoquartzite, g-.nd ered laminar calcareous sandstone __ 90 calcareous sandstone, interbedded; 16. Cherty limestone and argillaceous lime brownish gray; weather sandy brown to stone, interbedded; medium to dark gray; tan; banded laminae; crossbedded in up weather brownish gray; thin to medium per part; locally platy and blocky float. bedded; prismoporoid bryozoans and Unit is poorly exposed ______121 spiriferid brachiopods -_ _ _ __ 60 5. Limestone, calcareous quartzite, arenace 15. Calcareous quartzite, brownish-gray; ous limestone, argillaceous limestone, weathers tan; medium bedded to mas cherty limestone, and calcareous sand sive; thin argillaceous limestone and or- stone, interbedded with cyclic repetition. thoquartzite parting layers ______115 Limestone, arenaceous limestone, argil laceous limestone, and cherty limestone 14. Cherty limestone, arenaceous limestone, are dark gray and medium dark gray, and argillaceous limestone, interbedded; weather medium gray, and are thin to dark gray; weather brownish gray and medium bedded; limestone contains shale light gray; thin to medium bedded; black and sand partings. Calcareous quartzite chert nodules and layers throughout and calcareous sandstone are grayish unit; abundant brachiopods (USGS brown, weather brownish tan and medium colln. 20305-PC) ______364 grayish tan, and are thin to medium bed 13. Orthoquartzite and calcareous quartzite, ded; sandstone is locally crossbedded. interbedded; brownish gray; weather Bioclastic limestone layers are present tan; medium bedded to massive _ _ _ _ 66 locally in the unit. Unit is locally fos- UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A31
Thickness Thickness (ft) (ft) siliferous (USGS colln. £22578 and 14. Orthoquartzite, medium brownish gray; 20302-PC) ______780 weathers grayish tan; medium bedded; Porphyry dike 7 ft thick. local thin interbedded bioclastic lime stone ______129 4. Limestone, calcareous quartzite, arenace ous limestone, argillaceous limestone, 13. Argillaceous limestone, arenaceous lime and cherty limestone, interbedded with stone, and limestone, interbedded; medi cyclic repetition; medium dark gray; um gray; weather medium light gray; weather light gray; thin to medium bed thin to medium bedded; locally bioclastic ded; crossbedded bioclastic limestone limestone and cherty limestone in lower and shale parting layers locally; horn part of unit; argillaceous limestone and corals and fusulinids present (USGS carbonaceous shale partings in lime colln. £22577 and 20299-PC) ______630 stone; argillaceous limestone at top of unit abundantly fossiliferous, Prismo- 3. Calcareous sandstone, limestone, calcare pora bryozoans, brachiopods, and crinoid ous quartzite, arenaceous limestone, and stem fragments, locally fusulinids argillaceous limestone, interbedded. Cal (USGS colln. 20324-PC and 20325-PC) 445 careous sandstone and calcareous quartz ite are brownish gray, weather yellow 12. Orthoquartzite, medium brownish gray, ish tan and tan, and are thin to medium weathers tan; medium bedded; in part bedded; sandstone is locally crossbedded. crossbedded and banded ______59 Limestone, arenaceous limestone, and 11. Limestone, cherty limestone, argillaceous argillaceous limestone are dark gray, limestone, and calcareous quartzite and weather medium gray, and are thin to Orthoquartzite, interbedded with cyclic medium bedded; limestone locally con repetition. Limestone intervals 50-100 ft tains black chert nodules. Unit contains thick are medium dark gray, weather me shale partings and thin interlayers of dium gray to medium light gray, are thin bioclastic limestone. Chaetetes is found to medium bedded; locally arenaceous in limestone at 150 ft in nearby refer limestone is bioclastic; argillaceous lime ence section (6a) (USGS colln. 20332- stone and shale form parting layers lo PC and 20333-PC) ______610 cally; sparse black chert nodules occur 2. Arenaceous limestone and cherty limestone, locally in the dense limestone layers. interbedded; medium gray; weather me Unit is fossiliferous; bryozoans, crinoid dium dark gray; thin to medium bedded; stems and brachiopods (USGS colln. interlayered argillaceous limestone and 20322-PC and 20323-PC). Quartzite in bioclastic limestone. Lower part of unit tervals 6-50 ft thick are medium brown covered ______279 ish gray, weather grayish tan, are me dium bedded, are locally crossbedded 1. Calcareous quartzite, brown-gray; weath and banded; calcareous quartzite has ers tan; locally crossbedded ______7 characteristic sanded weathered sur face ______670 Total thickness measured ______9,072 Conformable contact. 10. Calcareous quartzite, medium-brownish- gray to light-gray; weathers medium Oquirrh Group, West Canyon Limestone. gray to brownish tan; medium bedded REFERENCE SECTION OF LOWER PART OF BUTTERFIELD PEAKS to massive; locally well jointed. Medial FORMATION (see fig. 4, section 11) 13-ft limestone is medium dark gray, Begins approximately 7250 contour on traverse beginning at weathers medium gray, is medium bed base of ridge on north, side Soldier Creek, opposite un ded, and is in part bioclastic. Unit is named stream heading at the d in Bald Mountain, traverse fossiliferous, spiriferid brachiopods N. 6° E. to ridge top, then N. 40° E. to ridge top west of (USGS colln. 20321-PC) ______1?6 peak 9075, sees. 26, 27, and 34, T. 4 S., R. 4 W., Stockton 9. Limestone, cherty limestone, arenaceous quadrangle, Utah limestone, argillaceous limestone, and [Measured by E. W. Tooker, Mackenzie Gordon, Jr., and R. J. Roberts] calcareous quartzite, interbedded with Thickness cyclic repetition; medium to dark gray (ft) and grayish tan; weather medium light Fault contact near ridge crest. gray, grayish tan to brownish gray; thin Oquirrh Group: to medium bedded; locally arenaceous Butterfield Peaks Formation (upper part). beds are crossbedded and banded, oc Butterfield Peaks Formation (lower part) : casionally are bioclastic; thin carbon 15. Cherty limestone, medium gray; weathers aceous shale partings, bedded chert, and medium light gray; thin bedded; black quartzite lenses and layers occur chert nodules ______^______66 throughout unit; limestone locally con- A32 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH
Thickness Thickness (ft) (ft) tains abundant black chert nodules. fossiliferous, containing abundant horn Quartzite makes up less than one-fifth corals, bryozoans, and spiriferid bra.ch- of unit, is crossbedded and banded, and iopods (USGS colln. 20318-PC). A Ter locally has a thin-sanded weathered sur tiary monzonite sill with characteristic face. Fossils are locally abundant in the greenish weathered surface is 7 ft thick, limestone mostly productid brachi- occurs 2 ft above the base of the unit _ 146 opods. A 22-ft Tertiary monzonite dike 4. Calcareous quartzite, orthoquartzite, lime crops out at 343 ft ______348 stone, arenaceous limestone, and argilla 8. Orthoquartzite, calcareous quartzite, and ceous limestone, interbedded, Quartzite limestone, interbedded; medium light beds are color banded in medium gray and gray and medium dark gray; weather brownish medium gray, are weathered medium light gray; thin to medium bed medium light brownish gray to dark ded. Quartzite intervals 50-150 ft thick brownish gray, are medium bedded to predominate in the unit; however, quartz massive, occur in intervals ranging from ite units contain thin interbedded lime 10 to 55 ft thick at the base, middle, and stone layers and limestones contain thin upper parts of the unit; crossbedd:ng interbedded quartzitic layers. Limestones prominent locally. Unit characteristi are locally arenaceous, bioclastic, and ar cally forms cliffs in outcrop. The werth- gillaceous. Argillaceous limestones con ered surface of orthoquartzite is charac tain abundant fossils locally, spiriferid teristically smooth; a thin sanded rind brachiopods, crinoids, and corals _ -- 358 occurs on calcareous quartzite. Lime 7. Calcareous quartzite, limestone, arenace stones are medium gray to medium dark ous limestone, and argillaceous lime gray, weather medium light gray to stone, interbedded with cyclic repeti grayish tan with brownish rust streaks tion; medium gray to medium light along coarse sand zones, are fine to me grayish tan; weather light gray and tan; dium bedded, are locally crossbedc"ed, thin to medium bedded. Quartzite inter have occasional bioclastic limestone lay vals predominate and average 10-30 ers and shale partings, have local black ft thick; half as many limestone inter chert nodule limestone beds, and are vals average about 20 ft thick. Quartzite fossiliferous, containing productoid is poorly exposed. Limestone locally con brachiopods and bryozoans (USGS colln. tains black chert nodular zones, shale 20317-PC) ______141 parting layers and bioclastic limestone 3. Limestone, arenaceous limestone, argilla beds; locally abundantly fossiliferous ceous limestone, and calcareous quartzite, (USGS colln. 20320-PC) ______309 interbedded with cyclic repetition. Lime 6. Limestone, arenaceous limestone, argillace stones are medium gray to medium d"rk ous limestone, and calcareous quartzite, gray, weather medium gray to li Thickness calcareous quartzite. The overlying Markham Peak (ft) Member, 4,327 feet thick, is composed predomi stones are medium gray to medium dark gray, weather medium to light gray to nantly of calcareous quartzite and ferruginous sand tan, are thin to medium bedded, contain stones. thin fissile chert, shale, and bioclastic CLIPPER RIDGE MEMBER limestone interlayers, and commonly con The Clipper Ridge Member, here named for the tain crossbedded brown quartz sand part area of excellent exposure on the south side of Clip ings. Limestones are fossiliferous lo cally, containing brachiopods, crinoids per Ridge in Middle Canyon on the west side of the and fusulinids fragments. A white chert Oquirrh Mountains, is about 3,000 feet thick and is layer 1 ft thick is a marker unit at 137 the lower member of the Bingham Mine Formation ft. Quartzites are gray to grayish tan (fig. 5). The type section is in Ni/2 sec. 6, T. 4 S., and medium brownish gray, weather buff R. 3 W., and Si/2 sec. 31, T. 3 S., R. 3 W., Bing'ham to tan, are medium bedded to massive, are commonly crossbedded, are locally Canyon quadrangle (fig. 4, section 7a). The lower banded, locally contain limestone, chert, contact of the member is at the base of the 10 -foot and shale parting layers. Limestones quartzite that underlies the prominent and distinc make up three-quarters of the unit in tive cliff outcrops of the 360-foot thick laminar intervals ranging from 2 to 15 ft thick; quartzite intervals range from 2 to 5 ft cherty limestone Jordan marker bed (unit 2). The thick. A Tertiary monzonite porphyry Jordan can be traced from the range front south of sill 12 ft thick occurs at 92 ft above base the mouth of Middle Canyon, eastward across the of unit ______279 Long Ridge anticline to the south edge of the F:ng- 1. Calcareous quartzite, light-gray-brown; ham porphyry intrusive mass. The upper contact is weathers reddish to brownish tan; thick immediately above a fossiliferous sandy limestone bedded; blocky ______5 marker unit, which contains an abundant well- Total measured thickness ______3,863 preserved assemblage of fusulinids, Caninia and Conformable contact. Syringopora corals, and bryozoans; the contact is Oquirrh Group, West Canyon Limestone. beneath a quartzite and sandstone unit, which con The limestone beds in the Butterfield Peaks For tains the first prominent ferruginous sandstone in a mation contain an abundant fauna of brachiopods, predominantly calcareous sandstone and quartzite bryozoans, corals, and fusulinids, as noted by Welsh unit. and James (1961, p. 8-11). The positions of fossil The Clipper Ridge Member consists mostly of collections are shown in the stratigraphic sections orthoquartzite, calcareous quartzite, and calcareous and in table 6; a detailed discussion of the faunas and quartzose sandstone, but also contains several and their correlation is given by Gordon and Dun- limestone layers more than 100 feet thick. The can in the section on biostratigraphy and correla quartzite commonly is medium to thick bedded and tion. In general the fauna resemble those of the is fine to medium grained. Some beds are finely Erda Formation in the Rogers Canyon sequence. banded and locally crossbedded. In the mining dis The age is Des Moines (Middle Pennsylvanian) trict the limestone units include conspicuous map- although the lower few hundred feet may be Atoka. pable beds such as the Parnell, York-Phoenix, Jor dan, and Commercial marker beds. Interbedded BINGHAM MINE FORMATION cherty, arenaceous, and argillaceous limestones and The Bingham Mine Formation was named by shale are as much as 270 feet thick in the lower Welsh and James (1961, p. 8-9) for limestone and part of the member. In the upper part of the mem quartzitic sandstone in the Bingham mining dis ber, limestones are thinner, ranging from less than trict. It was originally defined as the predominantly 10 feet to 70 feet in thickness, and are interbedded calcareous quartzite strata of Pennsylvanian age with quartzite units, ranging from 150 feet to 300 above the base of the Jordan marker bed. Their type feet in thickness. section was specified to be on South Mountain in TYPE SECTION OF CLIPPER RIDGE MEMBER (see fig. 4, section 7a) sees. 20, 21, and 22, T. 4 S., R. 5 W., Stockton quad Ridge southwest from hill 8745, north side of Middle Canyon, rangle. sec. 6, T. 4 S., R. 3 W. and SV2 sec. 31, T. 3 S., The Bingham Mine Formation is 7,311 feet thick R. 3 W., Bingham Canyon quadrangle, Utah and is divided into two members. The Clipper Ridge [Measured by E. W. Tooker and R. J. Roberts] Member, 2,985 feet thick, is composed predomi Oquirrh Group: nantly of cyclically interbedded orthoquartzite and Bingham Mine Formation: A34 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH Thickness T"iickness (ft) (ft) Markham Peak Member. gillaceous limestones; worm trails shale partings ______- 10 Conformable contact. Clipper Ridge Member: 11. Calcareous quartzite, arenaceous lime stone, orthoquartzite, and cherty 20. Limestone, dark-gray; weathers light limestone, interbedded; quartzite is bluish gray; thin to medium bedded; tan to light gray, limestone is dark interlayered thin arenaceous lime gray; quartzite weathers to light stone; locally black chert nodules; brown and tan, limestone weathers abundant well-preserved bryozoans, mottled gray and light brown; thin brachiopods, syringoporoid corals, to medium bedded; locally banded, and fusulinids (USGS colln. f 22604) 5 crossbedded, and ripple marked; in 19. Calcareous quartzite, light-tan; weath terlayered bioclastic limestone beds ers light brownish tan; medium and shale partings; some black chert bedded; interlayered thin silty lime nodules and lenses along bedding; stone and calcareous sandstone; fusulinids and bryozoans locally fusulinids abundant ______18 abundant (USGS colln. f22600) __ 456 18. Arenaceous limestone, medium-gray; 10. Limestone, arenaceous limestone, and weathers medium grayish brown; cherty limestone, interbedded; medi banded; abundant fusulinids and um light gray; thin to medium syringoporoid corals (USGS colln. bedded; locally black chert nodules f22603, f22572, and 23890-PC) _ 10 along bedding; abundant fusulinids, productid and spiriferid brachio 17. Orthoquartzite and calcareous quartz pods, crinoids, bryozoans, and cani ite, interbedded; light grayish tan to noid and syringoporoid corals ___.. 10 brown; weather light brownish tan; medium bedded to massive; banded_ 160 9. Calcareous quartzite, tan; weathers brownish tan and medium gray; 16. Silty limestone, arenaceous limestone, medium bedded; locally crossbedded; and calcareous quartzite, intarbed- interlayered thin arenaceous lime ded; medium gray and buff tan; stone and orthoquartzite; fusulinids weather medium light gray and tan; in limestone (USGS colln. f22599) - 95 thin to medium bedded; brown sand stone partings in limestone; fusu 8. Silty and arenaceous limestone, inter linids (USGS colln. f22601 and bedded; medium gray; weather me f22602) ______23 dium light gray and brownish tan; medium bedded; locally crossbedded; 15. Calcareous quartzite and orthoquartz- interlayered thin dark-gray lime ite, interbedded; light grayish tan; stone; sparse crinoid and bryozoan weather light brown and gray; medi fossils ______-___ 15 um bedded; locally banded; interlay ered thin arenaceous limestone; cher- 7. Calcareous quartzite, calcareous sand ty limestone, and silty limestone; stone, and arenaceous limestone, in fusulinids, caninoid corals, and terbedded; grayish tan; weather productid brachiopods occur in lime brownish tan and light gray; me stone (USGS colln. 20295-PC and dium bedded to massive; banded and f22574) ______142 crossbedded, and locally ripple 14. Arenaceous limestone and calcareous marked; locally interlayered ortho quartzite, interbedded; medium quartzite, which has a hard weath gray and grayish tan; weather light ered surface in contrast to the pitted reddish brown and light gray; me thick punky weathered surface on dium bedded ______26 calcareous quartzite; worm trails in sandstone; brachiopods and bryo 13. Calcareous quartzite, arenaceous lime zoans in limestone ______659 stone, and calcareous sandstone, in terbedded; grayish tan and medium 6. Limestone, medium-dark-gray; weath gray; weather reddish brown to ers light gray; thin bedded; inter light brown and light gray; platy layered thin arenaceous limestone, to medium bedded ______65 partings; fusulinids (USGS colln. f22598) ______14 12. Limestone, medium-gray; weathers mottled grayish brown and light 5. Calcareous quartzite, arenaceous lime brown; thin to medium bedded; in stone, and orthoquartzite, inter terlayered thin arenaceous and ar- bedded; grayish tan; weather UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A35 Thickness of probable Missouri age. The megafauna are not (ft) sufficiently diagnostic to confirm this age designa brownish tan; medium bedded to massive; crossbedding, channel scour tion, but Syringoporoid corals, which are fairly com and fill, and local ripple marks; mon in the upper part of the member, may repre sparse fossils in thin limestone sent a Missouri fauna. On the basis of these data layers ______626 we consider the Clipper Ridge Member to be of Mis 4. Cherty limestone and arenaceous lime souri age. stone, interbedded; dark gray; weather medium dark gray and MARKHAM PEAK MEMBER brownish gray; thin laminar to me The Markham Peak Member of the Bingham Mine dium bedded; abundant large indi Formation is here named for the quartzite and sand vidual black chert nodules parallel to bedding, many of which are zon- stone beds of the upper part of the Oquirrh Group; ally altered; abundant brachiopods these beds are exposed on and near Markham Peak and bryozoans locally. This is the in the central part of the Oquirrh Mountains (fig. Commercial limestone marker bed _ 136 4, section 7b). In addition to rocks of the upper part 3. Calcareous quartzite, arenaceous lime of the Bingham Mine Formation of Welsh and stone, and calcareous sandstone, in James (1961), the Markham Peak Member also in terbedded; tan; weather brownish cludes about 1,200 feet of rocks on Markham Peak tan; medium bedded; crossbedded; well jointed; punky ferruginous assigned to the lower portion of the Curry Forma weathered rind in sandstone and tion by Welsh and James (1961, p. 6-7). hard weathered surface on quartz The lower contact with the Clipper Ridge Mem ite ______144 ber is conformable, the upper part of the member 2. Arenaceous limestone, cherty lime has been eroded at Markham Peak, and north of the stone, silty limestone, and calcareous sandstone, interbedded; dark gray peak the sequence is cut oif by the Midas thr ist to medium gray; weather medium fault; therefore, the total thickness of the meml^r gray, and locally near base, mottled is unknown. However, more than 4,300 feet hr.ve light gray and tan; thin to medium been measured in the type section on the ridge be bedded; sandstone locally banded tween Spring and Dry Canyons west of the Occi and crossbedded. Abundant chert in thin nodule layers in the lower part dental fault (sees. 30 and 31, T. 3 S., R. 3 W., Bing unit; nodules along layers in the ham Canyon quad.), and on Markham Peak east of upper part. Sheared altered zone 6 the Occidental fault (sees. 21 and 22, T. 3 S., R. 3 in. thick at base of unit. Bryozoans, W., Bingham Canyon quad.) (fig. 4, sections 7a, abundant spiriferid and productid 7b). brachiopods, and corals occur in the middle part, and fusu- Orthoquartzite and calcareous quartzite, calcare linids, brachiopods, and bryozoans ous sandstone, calcareous silt, and all possible inter- at the base (USGS colln. f22597 and gradations of these lithologies constitute the Mark- 22486-PC). This is the Jordan lime ham Peak Member. A few thin 1-3-foot fusulinid- stone marker bed ______361 bearing arenaceous limestone beds provide marker 1. Orthoquartzite tan; weathers brown horizons. Layers and lenses of chert pebble congkm- ish tan; massive bedded; dense; banded ______10 erate occur on Markham Peak in the upper part of the section. Welsh and James (1961, p. 12) believed Total thickness measured __ 2,985 that this conglomerate represented an unconformity at the Pennsylvanian-Permian boundary. The ortho- Conformable contact. quartzite is buif to tan, weathers tan to light brovn, Oquirrh Group, Butterfield Peaks Formation. is medium grained, detrital, silica-cemented, medium Megafossils, mostly corals, are sparse and poorly bedded to massive, locally banded, crossbedded, rip- preserved except in arenaceous limestone or cal plemarked, and locally shows channel scour and fill. careous sandstone; fusulinids are the most useful Calcareous quartzite is light tan gray, weathers for geoehronology. Positions of selected collections yellow gray to yellow orange, is sandy, and is car are shown in the stratigraphic section and are dis bonate cemented; locally pitting and a soft sardy cussed by Gordon and Duncan in the section on bio- rind develops on weathered surfaces. stratigraphy and correlation. Triticites is the most Thin beds of arenaceous medium-dark-gray lime common fusulinid, and the forms are believed to be stone, which weather olive gray, are common in the A36 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH Thickness lower most part of the member; in many places they (ft) contain coarse fossil fragments as well as quartz thoquartzite banded; interlayered grains. Brachiopods, corals, bryozoans, and fusu- thin ferruginous sandstone and thin linids occur at these horizons. Arenaceous limestone conglomerate lenses. Unit poorly ex and calcareous sandstone grade into each other. posed ______- 280 16b. Orthoquartzite and calcareous quartz TYPE SECTION OP MARKHAM PEAK MEMBER ite, interbedded; light grayish tan; (see fig. 4, section 7b) medium bedded; thinly banded; well jointed; locally crossbedded in uppe^ East-trending ridge from Markham Peak through the middle half of unit ______- 267 of sees. 21 and 22, T. 3 S., R. 3 W., Bingham Canyon quadrangle, Utah 15-16a. Orthoquartzite, tan, medium- to thick- bedded; nonbanded; well jointed; [Measured by E. W. Tooker and W. .T. Moore] interlayered 3- to 4-ft ferruginous Thickness sandstone beds ____ 144 (ft) 14d. Calcareous quartzite, ferruginous sand Erosion unconformity at Markham Peak. stone, orthoquartzite, arenaceous Oquirrh Group: limestone, and silty limestone, in Bingham Mine Formation. terbedded. Dark-yellowish-brown medial sandstone; dark-gray upper Markham Peak Member (upper part) : and lower limestones. All are medimr 26. Calcareous sandstone, medium-dark- bedded. Upper 40 ft of unit is gray; weathers light reddish brown; mostly covered _____ 198 interlayered ferruginous sandstone; 14c. Orthoquartzite, tan; weathers light thick punky weathered surface rind 192 tan; finely banded; well jointed; 25. Calcareous quartzite, orthoquartzite, smooth weathered surface; interlay and ferruginous sandstone, inter- ered calcareous quartzite. Upper bedded; local small breccia zones part of unit is mostly covered _ 534 along bedding. Unit is poorly ex 14b. Silty limestone, dark-gray; weathers posed ______148 medium gray; thin bedded; Litho- 24. Calcareous sandstone, dark-gray; strotion colonial coral ____ 37 weathers light gray; thin to medium 14a. Covered zone; brown iron-stained gos bedded; platy; sparse black chert san and line of prospect pits; possi nodules irregularly scattered ble concealed fault of unknown dis throughout unit ______5 placement ______- 4 23. Ferruginous sandstone and calcareous 13. Calcareous quartzite, light-grayish- quartzite, interbedded; dark brown tan; weathers tan; medium bedded; and grayish tan; thin to medium occasional interlayered silty lime bedded; interlayered thin silty lime stone and calcareous sandstone; fu- stone and calcareous sandstones that sulinid fragments found in sand contain chert nodules ______189 stone; worm trails present in lime stone (USGS colln. f23432 and 22. Calcareous quartzite, calcareous sand f23433) ______292 stone, orthoquartzite, and ferrugi 12. Calcareous siltstone and sandstone, nous sandstone, interbedded; thin interbedded; light gray; weather tan bedded to massive; local thin breccia and olive gray; thin bedded; locally zones. Unit is mostly covered ____ 111 banded; thin hard rind on weathered 21. Orthoquartzite, dark-tan; weathers surface of sandstone; worm trails in brownish tan; medium, bedded to punky siltstone; fusulinid molds ir massive; jointed; nonbanded; 1-ft sandstone ______323 breccia at 136 ft ______182 11. Calcareous sandstone; light tan to 20. Calcareous quartzite and basal 4-ft medium gray; weathers olive gray ferruginous sandstone. Unit is most (hard weathered surface) and ly covered ______148 orange brown (soft and punky weathered surface); medium bedded; 19. Calcareous sandstone, olive-gray; locally crossbedded; well jointed; weathers light grayish orange; me interlayered silty and platy lime dium to thick bedded; thin hard stone; fusulinids found in sandy weathered surface rind ______111 limestone unit 1 mile south alonfr 17-18. Orthoquartzite, calcareous quartzite, ridge (USGS colln. f23431) ; mostly and sandstone, interbedded; light covered above 20 ft ______202 grayish tan; weather light reddish brown and tan; medium bedded; or- Total thickness measured ___ 3,367 UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A37 Conformable contact. Thicknis (ft) Oquirrh Group, Bingham Mine Formation, 12. Calcareous sandstone and calcareous Markham Peak Member (lower part). quartzite, interbedded; buff to tan; TYPE SECTION OF MARKHAM PEAK MEMBER (see fig. 4, section 7a) weather yellow; interlayered thin silty light-gray limestone and bio- Ridge between Spring and Dry Canyons, south of Tooele clastic limestone; sandstone weath Smelter in sees. 30 and 31, T. 3 S., R. 3 W., Bingham ers to thick soft (punky) surface. Canyon quadrangle, Utah Unit is mostly covered slope ___ 12-T [Measured by E. W. Tookor and R. J. Roberts] 11. Calcareous quartzite and ferruginous- Thickness calcareous sandstone, interbedded; (ft) light olive gray; weather brownish Alluvium, covered, faulted, conformable contact yellow to yellowish orange; medium bedded; interlayered thin gray are at offset in section across the Occidental fault. naceous and silty limestones; fusu Oquirrh Group: linids (USGS colln. f23105, f23106, Bingham Mine Formation: and f23107) ; locally abundant worm Markham Peak Member (lower part) : trails; several 1-ft breccia zones, in 18. Orthoquartzite, medium-bedded, joint lower 30 ft of unit. Unit is mostly ed. Unit is covered slope ______- 116 covered ______450 17. Orthoquartzite, pale-yellowish-brown; 10. Silty limestone, medium-light-gray; weathers medium yellowish brown; weathers light olive gray and brown medium bedded to massive; fine ish gray; thin bedded; locally platy; banding; well jointed; ripple fusulinid (USGS colln. f23112) ___ 4 mark flutes on weathered bedding 9. Calcareous quartzite and ferruginous surfaces; partly covered __ _ 254 sandstone, interbedded; interlayered 16. Orthoquartzite, calcareous quartzite, arenaceous and bioclastic limestone and ferruginous-calcareous sand and siltstone; caninoid and syringo- stone, interbedded; pale yellowish poroid corals, and brachiopods. Unit brown and brown; weather reddish is mostly covered ______67 brown; thin to medium bedded; local 8. Silty limestone, medium-light-gray; 2-in. chert bands; thick weathered weathers light gray and light olive surface rind on sandstone ____ 315 gray; thin bedded; platy; poorly 15. Arenaceous limestone, medium-dark- preserved fusulinids ______2 gray; weathers pale yellowish 7. Calcareous quartzite and arenaceous brown; medium bedded. Medial 4-ft limestone, interbedded; light olive calcareous sandstone. Fusulinids and gray; weather dark yellow orange Caninia corals (USGS colln. f23111) to pale yellowish gray; medium abundant ______22 bedded to massive; locally pitted 14. Orthoquartzite, calcareous quartzite, weathered surface; sparse coral and and calcareous and ferruginous bryozoan fauna. Unit is poorly ex 86 sandstones, interbedded; pale yellow posed ______ish brown; weather reddish brown 6. Arenaceous limestone, calcareous to medium yellowish brown; thin to quartzite, and ferruginous sand medium bedded; banded; interlay- stone, interbedded; light olive gray ered thin fossiliferous limestone, bio- to light grayish tan; weather dark clastic limestone, and cherty lime yellowish orange, grayish orange, stone; fusulinids near middle part and pale yellowish brown; medium of unit ______765 bedded to massive; well jointed; lo 13. Calcareous quartzite and ferruginous cally platy; interlayered ortho- sandstone, interbedded; light gray quartzite and silty limestone; worm trails in ferruginous sandstone ____ 65 ish tan and pale yellowish brown; weather dark yellowish brown and 5. Orthoquartzite and calcareous quartzite, brown; medium bedded; interlayered interbedded; buff to tan and light thin Orthoquartzite and limestone gray; weather tan to light brown; beds; sandstone weathers to thick medium bedded to massive; well soft punky surface, locally brecci- jointed; banded layers; local cross- ated. Sandstone locally contains bedding, ripple marked in upper worm trails; arenaceous limestone part; interlayered thin brownish- contains fusulinids (USGS colln. gray arenaceous limestone; worm f23108 and f23109) ______306 trails in limestone ______257 A38 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH Thickness obliterating almost all structure. They appear to rep (ft) resent a large Triticites suggestive of Virgil age." 4. Orthoquartzite, buff to tan; weathers light brown; medium bedded; Comparable Upper Pennsylvanian rocks occur in jointed; banded; ripple marked; the downfaulted block east of Stockton, and south channel scour and fill; interlayered of Settlement Canyon. We find no well-identified thin calcareous quartzite ______259 well-preserved fossils of Wolfcamp age in the upper 3. Orthoquartzite, buff to tan; weathers most strata of the Markham Peak Member in the tan and brown; medium bedded; Bingham sequence. Gordon and Duncan describe banded ______. 91 (p. A54) an unusually large fossil collection near 2. Orthoquartzite and calcareous quartz Lark that they believe is of Virgil age and which ite, interbedded; buff; weather tan to probably correlates (in age) with a similar assem light brown; medium bedded to mas sive; banded; crossbedded; ripple blage in the lower part of the Kessler Canyon For marked. Unit is partly covered __ 32 mation in the Rogers Canyon sequence. 1. Arenaceous limestone, medium-gray; While the absence of a Wolfcamp fauna in the weathers light grayish tan; medium Rogers Canyon sequence may well indicate a period bedded; caninoid corals up to 6 in. of nondeposition or erosion during that time, we do long, productid brachiopods, bryo- not believe that the absence of these fauna in the zoans, crinoids, and fusulinids __ 24 Bingham sequence is a strictly comparable phenome Total measured thickness _____ 3,240 non. Indeed recognition of the presence of what we Conformable contact. consider to be Oquirrh Group strata of Wolfcamp Oquirrh Group, Bingham Mine Formation, age on South Mountain by Welsh and James (1961, Clipper Ridge Member. p. 6), in a sequence lithologically related to the Bingham sequence, and confirmed in our South Fossils in the Markham Peak Member are sparse Mountain collections by R. C. Douglass (written and poorly preserved; the position of representative commun., 1962), and recognition in the snthern collections is shown in the measured sections and in East Tintic Mountains in the Bingham sequence of table 7 and are discussed by Gordon and Duncan the fusulinids Schwagerina and Pseudoschwagerina in the section on biostratigraphy and correlation. Douglass (written commun., 1959) in uppermost Welsh (in Welsh and James, 1961, p. 8-9) also has Oquirrh sediments underlying the Diamond Creek identified comparable fusulinid collections indepen Sandstone, suggests to us that sediments of Wolf- dently. The age assignment of the Markham Peak camp age were deposited in the Bingham sequence Member to the Missouri and Virgil is based on these rocks wherever they were accumulated before thrust sparse and poorly preserved fusulinid collections in ing. These rocks have since been eroded in the the Oquirrh Mountains. Welsh reported that the Oquirrh Mountains, following the uplift of the upper 1,200-1,500 feet of the Bingham Mine For range during late Tertiary time. Gordon and Dun- mation, below a chert pebble conglomerate that he can discuss some of the broader regional correla regards as the Pennsylvanian-Permian boundary, tions of the Bingham Mine Formation. contains a fauna of Virgil age and that the fossils above are of Wolfcamp age. However, this age rela BIOSTRATIGRAPHY AND CORRELATION OF THE OQUIRRH GROUP AND RELATED tion was based largely on faunas identified in the ROCKS IN THE OQUIRRH MOUNTAINS, UTAH type section of the Bingham Mine Formation at South Mountain (see fig. 4, section 6b). Subsequent BY MACKENZIE GORDON, JR., and HELEN M. DUNCAN studies by R. C. Douglass (written commun., March The Carboniferous and Early Permian rocks of 13, 1966) indicates that probable Missouri fusu the Oquirrh Mountains are very fossiliferous locally. linids, Triticites sp., persist well up into the Mark- The fossils provide a reasonably accurate bssis for ham Peak section. Collection f23431, on a ridge dating these rocks. They also provide a faunal or northeast of Clipper Peak near the crossing of an biostratigraphic framework for correlating the for abandoned tramway line, contains Upper Pennsyl- mations of the Rogers Canyon and Bingham vanian Triticites sp. Collection f23432 from the east sequences, which on a lithologic basis alone would ridge of Markham Peak at about the 8,000-foot con probably have been correlated somewhat differently. tour contains Triticites'! sp. and Pseudofusulinella It was in part the discovery of Mississippian fossils sp. In collection f23433 from the same ridge at the in the Green Ravine-Rogers Canyon measured 8,080-foot contour "the fusulinids are recrystallized, section through a considerable thickness of rocks UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH AS 9 that resemble those of the Pennsylvanian Oquirrh f usulinid collecting localities given later in this report Group in Soldier Canyon that ultimately led to the His age determinations are included here in the dis concept proposed by Tooker and Roberts of two cussion that follows. These results constitute only a different rock sequences separated by thrust faults. minor part of Douglass' study as most of his col Because these sections are of considerable interest lections were from areas outside of the type sec and import and because the fossil faunas have tions. Other microfossils, such as ostracodes and played a prominent part in setting forth the geo conodonts, were not studied. logic story, the biostratigraphy is being presented In the fossil tables the letter symbols opposite in this separate discussion. We are indebted to the each species give an indication of relative abund authors of the main part of this paper for the ance as follows: opportunity to record our fossil determinations and R = rare, biostratigraphic interpretations. We also are in X = fairly common, debted to them for their continuous interest in these aspects of the problem and for having been C = common, indefatigable fossil collectors during the course of A = abundant. their fieldwork. These were determined in most collections by th«j Most of the fossils upon which this report is following criteria: rare=less than 5 specimens; based were collected by Tooker and Roberts between fairly common=5 to 25 specimens; common=26 to the years 1956 and 1966. Some of the largest collec 100 specimens; abundant^more than 100 specimens. tions were made by them in company with the In small collections and where large colonial forirs writers. Brief visits were payed to the area by were involved, an augmentative factor was applied Gordon in 1957, 1962, and 1969 and by Duncan in more or less subjectively in order to give a mor*? 1961 and 1962 at which times extensive collections realistic estimate. were made. Most of the fossils in the formations of both The megafossil collections used in preparing this sequences are silicified, or at least partly silicified. report, 119 in all, are confined with few exceptions This includes the fusulinids, many of which appear to the type and reference sections of the formations to have been reworked. Limestone beds in the for in both sequences. The collections are shown on six mations below the Grandeur Member of the Park tables, which list the fossils identified in each for City Formation generally contain a considerate mation. Five of the tables are arranged in strati- content of silt. The silt component interferes with graphic sequence and record the distance in feet the process of etching out the fossils in dilute hydro above the base of the formation of the bottom of the chloric acid and forms an interlocking matrix that unit from which the collection was taken, as well as must be removed manually by scraping the surface the number of the unit in which it was made. On of the fossils with a needle or dental tool. Many of the sixth, which records collections from a rela the fossils have been distorted by structural dis tively narrow stratigraphic interval, such an ar turbances that have taken place since their deposi rangement was not feasible. The fossils in these tion. Nevertheless, it is possible to secure reasonably lists were identified by several paleontologists. Most well preserved examples by working carefully ard of the corals and bryozoans were identified by H. M. by selecting from fairly large samples. Duncan; several Late Mississippian colonial corals were studied and reported upon by W. J. Sando, ROGERS CANYON SEQUENCE and two sponges were examined by R. M. Finks. About two-thirds of our collections, 83 in all, Gastropods were identified by E. L. Yochelson. The came from the Rogers Canyon sequence. The five rest of the fauna, principally brachiopods and pele- late Paleozoic formations that make up this sequence cypods, were identified by M. Gordon, Jr. The fos are in ascending order: the Green Ravine Forma sils were classified principally as to genus because tion of Mississippian age, the Lake Point Limestone many of the species appear to be new. of Mississippian and Pennsylvanian age,4 the Erda Fusulinids are abundant in some beds, particu Formation of Pennsylvanian age, the Kessler Can- larly in the upper part of the Oquirrh Group. These were studied by R. C. Douglass, who also made col * Since the preparation of this report, it has been determined tt at paleontologic evidence shows a slight difference in the boundary of the lecting trips into the Oquirrh Mountains in 1958 Lower and Middle Pennsylvania Series as used in the midcontinent and 1962. The forams in 36 collections identified by when correlated with the type Pennsylvanian in the Appalachian region. Indications are that part of the Morrow is Middle Pennsyl Douglass are listed in the register of late Paleozoic vanian in age. A40 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH yon Formation of Pennsylvanian and Permian (?) Zone part containing a predominantly bryozoan- age, and the Grandeur Member of the Park City brachiopod fauna and locally a number of small Formation of Permian age. Collecting localities in mollusks; the Caninia Zone with corals and chaeteti- these formations are listed at the end of this report. form bryozoans predominant; and a post-Cawm'a GREEN RAVINE FORMATION Zone part populated mainly by brachiopods. The The Green Ravine Formation can be separated fossils in 25 collections from the type section of into three parts biostratigraphically: a -pre-Caninia this formation are listed in table 1. TABLE 1. Megafanna of the Green Ravine Formation in its type section [Symbols explained in text] Unit 6 10 11 1?, Cl t- C5 OS OS c TH es -t -t es c: Cl o o t- GO 01 O5 S O5 § OS cs o: cc or ts CT o C ifl «*- C1" «*- Distance, in feet, above base of formation ______c c C c c O c c TH TH TH TH f 01 1 O O O O O O o O O 0 O 0 O * , O O O o o & ^ PH PH PH PH PH P, PH PH PH PH PH ft PH PH USGS colln. No. I 1 £ g 1 CC c: 1C ti OS OS C TH TH TH Cl -t t cc 20248 OC 1C CC 10 1C 1C 1C 1C CO CO TH TH ti cc e-i cc or TH OC tl TH r-i CO TH s TH c c TH b o o o O o l- r-i o s r-l r-l Corals : AmpJejcizaphrentis sp X X , R R Caninia cf. C. excentrica (Meek) C X X X X X X X X X X X R Horn coral, gen. & sp. indet R X R X X R R R Lithostrotion stelcki Nelson X X Multithccopornt n. sp X X R Aitlopora sp C ) Favositid, small form, gen. & sp. indet R Bryozoans : Fistuliporoid, encrusting form R ramose form X X RamiporaJia sp X X Trepostome. encrusting form R R R ? X ramose form X X R X Stenoporoid, massive form R ramose form R R R Tabttlipora sp R X R R RtenopliraqmirHiim! sp R Chaetetiform brvozoan, n. gen. A. sp. 1 X R X X X R Chaetetiform hrvozoan, n. gen. B. sp. 1 X FeiiesteUa spp C X R X X C PoJypora sp c R R X Penniretepora sp c R R Iclithitoracliisl sp R Tlinmniscitsl sp ft R Rhomboporoid, gen. & sp. indet X X f-t R X R R Ciistoclictiia sp. A X C C X C sp. B R Bchinoderms : Crinoid coluninals A X C X X X (1 Crinoirt plates and spines c X R Pelmatozoan debris X Worms : Spfrorliis sp R Brachiopods : Sclii-ophoria sp R X R H Leptaqottia sp X KrJiucltertelln sp R R X Ortltotetcx aff. O. ocfiilentnlis Lane X Ruqosochonetcs sp X R R c X R Heteralosia sp X R Promarqinifera n. sp c In flat in sp ^ c R C X li Fle.raria sp X X Bitj'tnnin sp R Echinoconcli/is rorleocntsix Hernmi. var R 1 K X fHapJirngmiiH aff, I), rcxtriciinin (Worthen) X ''. C R Antiqiiatotiia aff. A. penioftomi Easton R R ? R X ? R X H K X Gratia sp. A R R R R R sp. B R Produetoid, gen. & sp. indet R R LeiorJiiincJiiix far'boniferum GirtvV R R PsiJocHinaral sp R > Spirifer brazeriaitux Girtv R R > Aiitlirai-ospirifer sp R R K R X li Spiriferoid. gen. & sp. indet R Pitnctospirifer tramtrerxiix (Mc< 1liesne\ ) X ReticuJarihia campeHtrin ( White I p X X If R R R X Hustcdia sp R H Cniritlniris sp X R X u Alartininl sp R ('leiotfiiii'irtina up A A C X K X R X R R UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A41 TABLE 1. Megafaima of the Green Ravine Formation in its type section Continued [Symbols explained in text] Unit R 10 11 \?, 10 IN M IN I- O5 O5 1-1 O5 o O TH 05 * * OS O5 05 05 o o 05 i 05 OS 05 O5 05 IN CO CO to so to to t- 3 o M M SO CC o> 05 05 Distance, in feet, above base of formation _ __ I- O o e o o O 0 o M IN IN 01 i-l iH TH i-l U u U U u u u u U U U U u U U u U u U U U u 0 u H & H & & & & 111 g 111 H 'V 111 'V Hi Hi Hi Hi Hi Hi Hi Hi Hi USGS colln. No 1 *v ^ 8 CO CO O5 I- IO M CO O5 05 O i-i i- TH CO si N TH «* "JH M CO so i o * ei * * ?> * CO CO IK * -tn IN CO 10 cc CO 10 CO * 10 10 1O 10 10 CO CO TH CI ?1 TH M CO CO n IN (N CC TH w CO (M CO TH M M IN M IN 1-1 1-1 CO TH o TH O so to O O to TH o to TH O SO t- O O O O O I- 1-1 so TH N TH Brachiopods Continued R R X R X R ? R Pelecypods : R R R R Gastropods : X X X X R R R, R R R R R R R R Cephalopods : R R Fish: R The lowest of these faunas occurs in unit 6 of the nant fossils of this zone are the large solitary corals type section. Five collections through the lower 30- Caninia cf. C. excentrica (Meek) and the less com 35 feet of this unit have yielded some 65 species of mon form referred with some question to Caninia megafossils. The principal coral in these beds is nevadensis (Meek). Amplexizaphrentis sp., and locally Aulopora sp. is Two species of syringoporoid corals in this rxme common; however in general corals are not nearly were examined by W. J. Sando (oral commun., as abundant as in the upper middle part of the for 1969) who found them identical to new specie? of mation. A few caninoid corals occur in loose slabs on syringoporoids he is describing from the Caninia the slopes but probably have come from higher in Zone in the Amsden Formation in western Wyo the section. ming. One of them, having closely packed corallites, Bryozoans are present in profusion. Among the represents a new genus and the other is referred common forms are species of Fenestella, Polypora, with question to Multithecopora. Lithostrotion Penniretepora, and Cystodictya of the group of C. stelcki Nelson, a colonial coral that is widely dis lineata Ulrich. A narrower species of Cystodictya is tributed in the late Chester equivalents in western even more abundant. The most common brachiopods Canada and Alaska, occurs locally. include the tiny productoid Promarginifera n. sp., Chaetetiform bryozoans in colonies up to nearly Reticulariina campestris (White), and a small spe 1 foot across also are common. Many of these colo cies of Cleiothyridina. In one collection, 18 mollus- nies, particularly the smaller ones, started by grow can species were identified, most of them small ing on bellerophontid gastropod shells, at least some gastropods. of them during the life of the snail. Continued The Caninia Zone occupies units 10 and 11 of the growth of the colonies probably robbed the snail of type section. The top of unit 11 coincides with the its ability of locomotion and brought the unfortunate type of this zone. The stratigraphic position of the animal to an untimely end. Also present in the base of this zone is as yet undetermined but may Caninia Zone are Tabulipora and other stenoporoid lie within unit 9. The Caninia Zone exceeds 400 feet bryozoans and Fenestella. in thickness and may be more than 500 feet thick. Among the brachiopods, a species of Antiquatonia Sixteen collections from this zone have been exam related to A. pernodosa Easton is commonly formd ined, all but one of them from unit 11. The domi in limestone beds that alternate with the coral- A42 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH bearing limestones. Other characteristic brachiopods distribution and a more remote point of origin for include Flexaria sp., a form related to Diaphragmus the Green Ravine assemblage than its present geo cestriensis (Worthen), Spirifer brazerianus Girty, graphical location in relatively close proxinity to Reticulariina campestris (White), and Cleiothyri- the Bingham sequence indicates. dina sp., which attest to the Chester age of the beds. LAKE POINT LIMESTONE The vost-Caninia Zone part of the formation is Two faunal zones, widely distributed in Carbo limited to unit 12 of the type section. Its fauna is niferous rocks in the Great Basin, are recognized in distinguished by the absence of the corals so abun the Lake Point Limestone. The Rhipidomella neva- dant in the underlying rocks, the continued survival densis Zone in the lower part of the formation is of most of the brachiopod species of the Caninia Late Mississippian (late Chester) in age. VHiat is Zone, and the appearance of several new forms. yet informally called the Rugoclostus zone, in the Relatively common in unit 12 are species of Schu- upper two-thirds of the formation, is Early Penn- chertella, Rugosochonetes, Inflatia, Diaphragmus, sylvanian (Morrow) in age. The productoid brachio Antiquatonia, Reticulariina, and Cleiothyridina. One pod genus Rugoclostus Easton is widely distributed of the four collections consists of a single bellero- in the Great Basin and Rocky Mountain regions and, phontid gastropod. so far as we have been able to determine, is re stricted to west American rocks of Morrow ajre. The Correlation and age. The Caninia Zone is dis stratigraphic distribution of these two zones, repre tributed widely in Late Mississippian rocks of the sented by 23 fossil collections, is shown in table 2. western United States. This is the K Zone recorded by Dutro and Sando (1963, p. 1974) in the Monroe The lowest occurrence of Rhipidomella nevadensis Canyon Limestone of the Chesterfield Range, Idaho. (Meek) was recorded 143 feet above the base of the This zone occurs also in the lower part of the Ams- formation. This species continues in some abun den Formation in the Salt River Range, Wyoming dance through the next 30-35 feet of beds upward, (Sando, 1968, p. D34). It has been recognized also but in rocks still higher it seems to be absent. The in the Doughnut Formation in the northern part of same brachiopod is common in a 54-foot cliff-form the Wasatch Range and is present also within the ing limestone (unit 2 of the type section), the top upper part of the Chainman Shale in the Confusion of which lies roughly 390 feet stratigraphically Range and at Granite Mountain, Utah. above the lowest occurrence of R. nevadensis and 48 feet stratigraphically below the base of a 5-foot In the southern part of the Wasatch Range and in limestone bed crowded with phaceloid colonies of the Bingham sequence in the southern part of the the coral Orygmophylluml (unit 4 of the type sec Oquirrh Mountains, the Caninia Zone lies within the tion) . Great Blue Limestone. In the Bingham sequence it In between the two intervals with abundant R. occupies an intermediate position between the Long nevadensis the rocks are not highly fossiliferous, Trail Shale Member and the top of the formation. but several thin shaly limestone beds are crowded The age of this zone is principally middle Chester, with frondescent Archimedes. Two such beds occur but it is probably in part late Chester in age. in unit 1 at 192 and 208 feet, respectively, below the The shaly fossiliferous beds of the lower part of top of the cliff-forming limestone (unit 2). The the formation contain fossils such as Spirifer braz Archimedes resemble those that occur in the type erianus Girty and Reticulariina campestris (White) section of the Manning Canyon Shale, 405-415 feet that in association indicate Chester age. A precise above its base, in the Bingham sequence. correlation with the Upper Mississippian Chester In the cliff-forming limestone (unit 2), besides type section is not possible at present. Lithologically, the relatively abundant R. nevadensis, the following according to stratigraphic position, and in part faunal elements indicate Mississippian age: Inflatia faunally, these beds are correlated with the Long sp. A and B, Flexaria sp. A, Carlinia phillipsi (Nor Trail Shale Member of the Great Blue Limestone in wood and Pratten), C. diabolica Gordon, Ovc-tia sp. the Bingham sequence of the Oquirrh Mountains and A, and Spirifer brazerianus Girty, var. All of these to the Paymaster Member of the same formation species are fairly common in very late Mississippian in the East Tintic Range. Some of the common and beds in other parts of the Great Basin, and none of characteristic Long Trail and Paymaster species are them is known in beds of Pennsylvanian rge. In absent. This is believed to be a facies, rather than some areas, for example at Conger Mountain in the an age difference, suggesting a somewhat restricted Confusion Range,. Utah, R. nevadensis is alsc found UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A43 TABLE 2. Megafauna of the Lake Point Limestone in its type section [Symbols explained in text] Unit _ _ _ 1 ?1 3 4 r» ^ 9 11 00 CD « © K CO a CO 36-PC'. S F-T 39-PC5 50-PC< O O O O PH P^ C CL, «V P 46-PC 19-PC 48-PC S V ? ? ^r ? 3 ? * IO 0 i> 1-1 O o: IN i. CO * 3A ri 10 USGS colln. No _ _ _ ! RHIPIDOMELLA NEVADBNSIS ASSEMBLAGE Corals : X Bryozoans : Fistuliporoid, encrusting form X Fistuliporoid, massive form _ _ _ R R Trepostomatous bryozoan, gen. & sp. indet _ _ X R Polypora sp X Archimedes _ X X Rhomboporoid, gen. & sp. indet X R. Echinoderms : Crinoid columnals _ _ R. Pelmatozoan debris (i p Echinoid ( ?) spines _ _ _ R. Brachiopods : Schizophoria cf. 8. texana Girtv _ X X cf. 8. resupinoides (Cox) X RhipidomeUa, nevadensis (Meek) R X X R X ScfiucherteUa sp. A _ R Orthotetes sp _____ R X Riigosochonetes aff. R. pseudoUratus (Easton) C A R R R X Inflatia sp. A R R X sp. B _ R Scoloconcha sp R Marginiferid, gen. & sp. indet R Flexaria sp. A R X Carlinia phillipsi (Norwood & Pratten) R dia'bolica Gordon _ _ _ R > X O vat ia sp. A R p sp. B R R Spirifer brazerianus Girty, var R Antfiracospirifer sp _ _ _ _ _ X p R X Crurithyris sp _. C R Cleiothyridhia of. C. sublanifUosa (Hall) _ _ X Composita sp _ R Beeclteria sp X Pelecypods : Sulcatopinna sp R Scaphopods : LaevidentaUuml sp. indet _ _ R Gastropods : Belleropfton ? sp. indet R KnightHes (Retispira) sp. indet R JEuphemiles sp. indet R Gen. indet. cf. Clolpites sp _ R Rhineoderma! sp. indet R Trepospira (Trepospira) sp _ X Baj/lea ? sp. indet _ R Pleurotomariacean, gen. & sp. indet _ _ _ R StropJiostyliis'i sp. indet _ R Naticopsis sp R Stegocoelia sp _ _ _ R Eotrochusl sp. indet R Paleostylus"! sp. indet _ _ R. Strobeus sp X R Meekospira sp _ X Cephalopods : Reticycloceras sp R R Trilobites : Paladin sp _ _ R Fish: Fish dentition _ _ R RUGOCLOSTDS SEMISTRIATUS ASSEMBLAGE Corals : AmplexizapJirentis"! sp R LopJiophi/Uidium sp _ f-i R. OrygmophyUuml sp P r Ganinia sp X Bryozoans : Fistuliporoid. encrusting form R R Eridopora"! sp R Tabulipora'i sp X R R Stenoporoid, encrusting form ? ramose form X Fenestella spp R fl. R X Poltiporella sp X Poylpora sp X EnaJlopora"! sp X Rhomboporoid, gen. & sp. indet X R X Echinoderms : Crinoid columnals X Pelmatozoan debris X X Echinoid spines R. Brachiopods : Schisophoria sp R R. R. Orthotetesl sp R R R Riigoclostus semistriatus (Meek) X X A44 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH TABLE 2. Megajauna of the Lake Point Limestone in its type section Continued [Symbols explained in text] > Unit 1 a 4 5 7 9 11 CO t- -ti CO 1O t- (35 rH O Cl CO CO CO Cl 00 CO GO CD CO o 00 t- CD -tl "tl 10 t- -x. Cl CO r-t rH CO GO yj 00 Cl Cl -* CO CD t- t- O (35 CO Distance, in feet, above base of formation ______rH rH rH rH tl CO 05 O 1O 1O 10 10 1O CO CD CD t- t- t- 00 0 rH CD iH r-T 0 O O o O O O 0 O O 0 O O O 0 O 0 O o O O k £ OH A A PH A A A A A A V A A PH A A g p-l >t >t 1-5 -tl 10 -tl JH CO GO i~ i rH o oo (35 CD JL Cl t- CO 5 at JL o 10 USGS colln. No. _ CO -h 10 10 O CO O t- CO co t- CD CD t- t- CO CO rn ei M Cl N Cl M Cl CJ rH rH rH rH iH rH rH rH rH ci Cl Brachiopods Continued Rugoclostus Continued C R X r c X R X R R R R R X ? R R X X X R R R R R R X R C X X X X r l) aff. A. rocki/montanus (Marcou) _ _ R X K R X R R X X R R X X X R R R X Oleiothi/ridina of. C. or'bicvlaris (McChesnev) R X R C C Composita sp X X R X X X Reecheria cf. B. Itoridens (Morton) ? X Dielasmoid, gen. & sp. indet R Gastropods : R Trilobites : Paladin sp _ R R Thickness sparingly in beds of undoubted Pennsylvanian age, (ft) but our observations have shown that where this spe e. Sandy limestone, medium-dark-brownish- cies is common to abundant, other associated faunal gray, fine-grained, in two slabby layers _ 1 elements indicate Mississippian, rather than Penn d. Limestone, gray (weathers bluish gray), sylvanian age. In the Oquirrh Mountains R. neva- medium to fine-grained; some vertical densis was not found in the Pennsylvanian. calcite veinlets up to V% in. wide ____ 2.5 Between the top of unit 2 and the base of the next c. Covered __-______3 fossiliferous bed, which is Pennsylvanian in age, is b. Brecciated limestone, gray, containing 24 feet of beds without megafossils. For all practical light-brown siliceous boxwork surround ing limestone fragments up to 1 in. purposes the top of unit 2 can be regarded as the across, particularly well developed ir top of the Mississippian in this section. Nevertheless, upper 6 in. ______1.5 the actual Mississippian-Pennsylvanian boundary a. Shale, buff, silty, and nodular limestone probably lies within unit 3 of the type section. A (weather brownish gray) ___ 3 detailed breakdown of this unit, measured by Gor don, is as follows: Total ______. 48 Unit 2: Cliff-forming limestone. Unit 4: Orygmophylluml bed. Unit 3: At our present state of knowledge of Great Basin Thickness Carboniferous stratigraphy we are inclined to place (ft) j. Limestone, medium-dark-gray, silty, inter- bed a of unit 3 in the Mississippian and refer the bedded with some gray limestone; poor rest of the unit to the Pennsylvanian. This reason ly fossiliferous ______23 ing is based upon the fact that beds of HtlN ology i. Silty limestone, like bed below but crowded similar to bed a occur in the Confusion Range above- with silicified productoids (USGS colln. beds containing Carlinia (Gordon, 1970) and carry 21140-PC) ______1 Mississippian fossils including R. nevadensis h. Silty limestone, medium-dark-gray (weath (Meek), Inflatia n. sp., Diaphragmus n. sp., and ers brownish gray) ; some gray limestone 6 locally Pentremites n. sp. (of Mississippian affini g. Limestone, gray (weathers light bluish ties). These Mississippian beds in western Utah gray), rather fine grained ______5 were included by Hose and Repenning (19-^9, p. /. Covered ______2 2173) in the lower part of the Ely Limestone. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A45 The brecciated limestone, bed b of unit 3, is re One other collection, from the upper part of the garded as marking the base of the Pennsylvanian formation but not from the type section, should be and delimiting a minor hiatus wherein these latest mentioned. This is from a bed on the north s: de of Mississippian beds, generally thicker in sections Big Canyon, the first canyon south of Green Ravine near the western limits of Utah, may have been (USGS colln. 16337-PC), which contained the fol partly removed by erosion. lowing species: The lowest fossils of undoubted Pennsylvanian Hederella sp _--__ - _____ X age occur in bed i of unit 3. This bed is crowded Fistuliporoid bryozoan, incrusting form R with shells of the productoid Rugoclostus aff. R. Stenoporoid bryozoan, incrusting form R Derbyial sp. indet _ - R semistriatus (Meek) associated with Anthracospiri Flexaria sp - R fer occidmis (Sadlick). The Rngoclostus fauna is Linoproductus nodosus (Newberry) C distributed through at least 1,075 feet of section in Anthracospirifer opimus (Hall)? '-- X the Lake Point Limestone, from the middle of unit Cleiothyridina cf. C. orUcularis (McChesney) __ R 3 to the upper part of unit 11. It is typically an Composita sp ___-_-_-__ ------C assemblage of large productoid brachiopods of the The presence of numerous shells of Linoproduc genera Rugoclostus, Flexaria, Echinoconchus, Anti- tus nodosus in this bed is noteworthy because of quatonia, and Linoproductus. Commonly associated similar occurrences of the same species near the top with them are Anthracospirifer occiduus (Sadlick), of the West Canyon Limestone of the Oquirrh Group Neospirifer cf. N. cameratus (Morton), Composita in the Soldier Canyon section of the Bingham sp. Punctospirifer transversus (McCheshney), and sequence and at approximately the same strati- Reticulariina campestris (White), the last two con graphic level in Provo Canyon in the Timpanogos tinuing upward from beds of Late Mississippian sequence in the Wasatch Range. (Chester) age. Correlation and age. As interpreted in the fore The 5-foot limestone bed with Orygmophyllum'! going discussion the type section of the Lake Point (unit 4) occurs in the type section of the Lake Point Limestone measured by Tooker and Roberts includes Limestone only 24 feet above the base of the Rugo 538 feet of beds of Late Mississippian (late Chester) clostus zone. Most of the corals in this bed are con age and 1,199 feet of beds of Early Pennsylvanian centrated in a 2-foot zone in the middle of it. Another (Morrow) age. The zone of uncertainty (without area where Orygmophylluml occurs in countless megafossils) as to the precise level of the Mississip- numbers in a single bed is the Confusion Range. The pian-Pennsylvanian boundary is actually 24 feet corals are in a 5-foot calcareous shale about 550 feet thick. above the base of the Ely Limestone. This coral was Some of the fossils of the Rhipidomella nevaden- identified as Barb our ia sp. in Hose and Repenning sis Zone are present also in the type section of the (1959, p. 2171). They (p. 2173) as well as the writ Manning Canyon Shale, about 15 miles to the south ers regard the lower 40-60 feet of the Ely Limestone of the Lake Point Limestone type section, in the in that area as Mississippian in age. Because the same range. The topmost 100 feet of the Marning Orygmophylluml bed occurs there high in the Rugo Canyon, which is gradational into the overling clostus zone, some 500 feet above the base of the Oquirrh Group at Soldier Canyon, contains fossils Pennsylvanian, scant likelihood exists that its depo typical of the Rugoclostus zone. The top of the Man sition was contemporaneous with the one in the ning Canyon corresponds to an undetermined level Lake Point Limestone. in the Lake Point Limestone, probably a few tens Typical silicified brachiopods of the Rugoclostus of feet above the Orygmophyllum'! bed (unit 4). zone are abundant in the lower 200 feet of the zone. Orygmophyllum'!, however, has not been fourd in Above this the fossiliferous beds are fewer and more the Manning Canyon Shale. The entire thickness of widely spaced. In some beds Anthracospirifer is ;he Manning Canyon is believed to be represented present to the exclusion of almost all other species. by little more than the lower 600 feet of the Lake In several of these the spirifers are not silicified. Point Limestone. Silicified Rugoclostus and Antiquatonia were ob The upper part of the Lake Point Limestone is served well up in unit 9 of the type section, but were .tratigraphically equivalent to the West Canyon not collected. Flexaria was recognized in a calcareous jimestone of the Oquirrh Group. The upper contact sandstone bed a few feet below collection 23855-PC. of both units is believed, on faunal as well as litho- No collections were made in the upper 100 feet of the ogic grounds, to lie at approximately the same formation in the type section. i stratigraphic level. A46 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH The significance of the bed (or beds) with abun Series in northwest Arkansas. L. nodosus is not dant Linoproductus nodosus near the top of the Lake known in the Atoka Formation of Arkansas and Point Limestone as well as the West Canyon Lime Oklahoma. For these reasons L. nodosus is presently stone of the Oquirrh Group is an indication of late regarded as a late Morrow species with a geographi Morrow age. In the Appalachian region, in eastern cally extensive peak zone. Kentucky, L. nodosus is abundant in the Kendrick Shale Member of the Breathitt Formation, formerly ERDA FORMATION thought to be of Atoka age but now regarded as The Erda Formation contains several faunal as Morrow. This species is replaced by a different semblages which indicate that this formation is Linoproductus in the slightly higher Magoffin Beds Middle Pennsylvanian in age. Twenty collections of Morse (1931). The ammonoids of the Kendrick from the type section and two from recognizable (Furnish and Knapp, 1966) belong to the same zone horizons in nearby sections were studied; the fossils that occurs in the Trace Creek Shale Member of the ara listed in table 3. Microfossils in four collections Bloyd Formation in the type section of the Morrow determined by Douglass are listed in the lithologic TABLE 3. Megafauna of the Erda Formation type section [Symbols explained in text] Unit 1 3 t fi S 1 0 11 13 14 1 9 25 9,7 t- fi to * o 01 rH i^ I- o ^ t~ CO CO * IO CO 10 00 Cl o t 1ft 0\ a (N 00 a 00 o ift o T-l CO - - O 0 0 O 0 O 0 O 0 O 0 O O O O 0 O 0 O O O ^ hM ^ hM & PH hM ^ « °i PH g ^ w PH hM w hM PH PH USGS colln. No ^ 1 I ^ 1 1 "* i i-i i-iCO tl CO CO M 10 in 10 IO 10 10 10 10 IO » CO CO Cl CO CO Cl CO ec CO fl MULTITHECOPORA-KOZLOWSKIA ASSEMBLAGES Corals : Caninia sp Q sp. indet _ _ R R X R R MttltitJiecopora sp. A X of R Multithecopora'! sp. B X X R Bryozoans : R R X R R R X R Ancopora sp. A _ _ X FenesteUa cf. F. xerratula var. of Condra & Elias __ X R R X X X R X R R X R R X R X R R R R R R X R R R 0 R X R R R R R Echinoderms : X X X X Brachiopods : R X R C Desmoinesia ingrata (Girtv)? R Rugoclostus'i sp ______R Linoproductus sp. indet R R R R R X ' r occiditus (Sadlick) ? R R R R R R Cleiottiyridina cf. C. orbicularis (McChesney) R > Composita ovata Mather ______? X R ? X R ANTIQUATONIA-HYSTRICULINA ASSEMBLAGE Corals : R Stereostylus sp R Auloporoid, gen. & sp. indet X Bryozoans : Ascopora sp. B X TabuJipora sp. A _ X sp. B X Stenoporoid, ramose form _ _ _ R Diploporaria sp R RhombocJadia sp R Worms : Spirorbis sp _ R R Brachiopods : Derbi/ia cf. D. crassn (Meek & Hayden) X R > R ? Meekella striatocostata (Cox) R Chonetinella cf. C. alata (Dunbar & Condra) R ? Hystricullna sp C R UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A47 TABLE 3. Megafauna of the Ercla Formation type section Continued [Symbols explained in text] Unit 1 0 t R S 1 0 11 18 14 1 9 35 27 b- Cl CC +* O ?i T-l b- t -V b- £ CO * 0 ce O 00 C) * 10 c-i C6 f) V. 03 oo IO o r-l 00 ^- O O O O o O O O O 0 o a a 0 a O O o O O O 0 ^ ^ Oi Oi Oi "? Oi Oi Oi Oi Oi Hi Oi Oi Hi M-( V Oi Hi Oi fc Hi USGS colln. No 1 1 i 1 1 -t* rH e-j CO +* 1C t- ot CC L^ K5 10 IO in 10 10 10 10 CC co Cl CJ co C-l ce cc Brachiopods Continued X' Fie jf aria sp R R Echinaria sp R Antiqiiatonia aff. A. coloradoensis (Girtv) C of R X R R R Khynchonelloid, gen. & sp. iiiclet R ) Anthracoxpirifer rocJcumontantis (Marcou) X X > Neospiriferl sp. indet R R R Grurithuris planiconvejea iShumard) c PhricodotJtyris perplexa (McChesney) X R Gastropods : Eupltemites sp. indet _ _ c R ? Platyceran sp. indet PRISMOPORA-DESMOINESIA ASSEMBLAGES Corals : Caninoid, gen. & sp. indet X R Bryozoans : Prismopora cf. P. triangulata (White) 0 sp X R RhombotnipeUa'? sp. indet R R R Trepostomatous brvozoan fragments R R R Septopora sp R R X Pemiiretepora'/ sp R Acanthoeladiid, gen. & sp. indet R RJtabdomeson. sp P. Rhombocladia sp X Rhombopora"? sp X Echinoderms : X X X R X Ft Brachiopods : R R Chonetinella cf. C. nlnta (Dunbar & Condra) X r R c1 R Inflatial sp _ X R Cancrinella '! sp X Desmoinesia muricatina (Dunbar & Condra) X T{ A R Antiquntonia sp R ? R Piitictospirifer Jientuclcensis (Shumard) 1! R r Cleiotliyridina sp. indet R R R X Pelecypods : Parallelodon sp R AcantJiopecten sp R Myalina"! sp. indet R Trilobite : R descriptions of the measured sections. With the pos linella-Chaetetes faunizone of Dott (1955, p. 2239). sible exception of Anthracospirifer opimus (Hall) According to our observations in other parts of the from an uncertain level near the base, no fossils Great Basin, the compound coral Chaetetes is com were collected in the lower 157 feet of the forma monly in or interbedded with limestone beds con tion, much of which is quartzite. taining Fusulinella and locally ranges upward into Multithecopora, a syringoporoid coral represented beds of Des Moines age. Raymond Douglass (oral by two distinct species, ranges through 600 feet of commun., 1969) informs us that his identification of beds in units 1 through 6 at levels from 157 to 757 Profusulinella' mentioned above is based upon frag feet above the base of the formation. We have been mentary and presumably reworked specimens. referring to this interval informally as the Multi Interspersed with the coralliferous beds in the thecopora zone. Chaetetes was collected 182 feet (in upper part of the Multithecopora zone and extend unit 1) and Profusulinella 502 feet (in unit 3) ing above them stratigraphically are brachiopod- above the base of the formation. These occurrences bearing beds in which Kozlowskia aff. K. haydenen- probably do not, however, represent the Profusu- sis (Girty) and Neospirifer cf. N. coloradoensis Ste- A48 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH vens are rather common. These two species were of the Erda Formation is based on material that found associated in units 4 through 8, in beds 604- appears to have been reworked suggests the possi 921 feet above the base of the formation. bility that beds of Atoka age, once present, were The next highest brachiopod assemblage in the removed by erosion. Physical evidence has not been type section of the Erda Formation is dominated by found, however, for unconformity in the lower part productoids of the genera Hystriculina and Anti- of the formation. quatonia and introduces the genus Chonetinella. This assemblage was found in two beds, in units 10 KESSLER CANYON FORMATION and 11, at levels 1,092 and 1,280 feet above the base The lower part of this formation has not provided of the formation. Crurithyris planiconvexa (Shu- identifiable fossils in the type section. The only rea mard) and the small gastropod Neilsonia are numer sonably good collections of megafossils came from ous in the lower bed. Among the bryozoans, Asco- unit 10 of the type section, a 35-foot cherty limestone pora sp. B and two species of Tabulipora are pres the base of which lies 675 feet above the base of the ent in the upper bed. formation. Two collections were made from this Desmoinesia muricatina (Dunbar and Condra) is unit. Although these come from the same general the dominant species in unit 13, where it occurs with locality, they have only two species in common, Punctospirifer kentuckensis (Shumard) and Com- which are marked by an asterisk (*) in th0. list posita subtilita (Hall) in beds of gray-black cal below. The composite fauna follows (USGS collns. careous shale or shaly limestone. Silicified specimens 18486-PC, 18893-PC). of D. muricatina are abundant in these dark shaly Relative beds, 1,494-1,690 feet above the base of the forma ab'indancc tion. This species was found only in unit 13. Rhipidomella carbonaria (Owen) ______X In the higher beds of the formation bryozoans are Derbyial sp. indet ______- R Neochonetes cf. N. granulifer (Owen) ____ X locally dominant, including such distinctive genera Retaria sp. indet ______R as Prismopora, Ichthyorachis, and Rhabdomeson. *Kochiproductus aff. K. peruvianus (d'Orbigny) __ R Prismopora cf. P. triangulata (White) is common Chaoiella sp ______-______R in unit 19, 2,204 feet above the base of the forma Linoproductus sp. indet ______R Crinoid columnals ______- C tion. Prismopora appears in the section 2,153 feet 'fOmphalotrochus wolfcampensis Yochelson ____ X above the base of the Erda and is found intermit Trilobite, gen. and sp. indet ______- R tently in the rocks above for more than 500 feet. The highest specimens stratigraphically occur in unit 27 The Oniphalotrochiis wolfcampensis assemblage associated with the brachiopods Mesolobus and Cho in this bed was assigned an Early Permian age by netinella. Douglass has identified Fusulina sp. E. L. Yochelson (in Tooker and Roberts, 1961, p. (USGS colln. f22570) in unit 24 of the type section, 30). However, in the Southern and Western United 2,488 feet above the base of the formation. He also States, many of the megafossils normally considered has recognized in unit 27 but outside of the type to indicate Early Permian (Wolfcamp) age put in section: Fusulina and W edekindeUina! in Black an appearance in rocks of Late Pennsylvanian (Vir Rock Canyon and Fusulina in Big Canyon. No recog gil) age. According to G. A. Cooper (oral commun., nizable fossils were found in the upper 909 feet of 1968), typical Permian genera such as Kochipro- the formation in the type section. ductus, Waagenoconcha, Omphalotrochus, and Peru- Correlation and age. The fossils of the Erda vispira are already present in the Upper Pennsyl Formation indicate a definite Des Moines age for vanian Uddenites Zone of Texas. It is, therefore, not beds 10 through 27 of the type section, from 1,017 possible to determine on the basis of the usual mega- to 2,697 teet above its base. The question as to how fauna alone whether a rock is very late Pennsyl much of the section to assign an Atoka age is a per vanian or Early Permian in age. Further evidence plexing one. We are inclined to regard the beds with must be sought among specialized groups, particu Kozlowskia aff. K. haydenensis and Neospirifer cf. larly the fusulinids. But even these are not always N. coloradoensis as of probable Des Moines age. In definitive. the Confusion Run^e, Mexolobu* and Dexnwhiesia Fusulinids occur in several beds above unit 10. All occur in a similar association with them. of them are in chert beds and all of them are poorly Fusulinid evidence to support or to refute these preserved. The one genus that can be recognized in tentative assignments is still lacking. The fact that all of these beds is Triticites. According to R. C. the one record of Profusulinella, in the type section Douglass (oral commun., 1969) the species of Triti- UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A49 cites that occurs in unit 21 of the type section, 2,221 TABLE 4. Megafauna of the Grandeur Member of the feet above the base of the formation appears to be Park City Formation a Late Pennsylvanian form, but because of the silic- [Symbols explained in text] ification of these fossils and their occurrence in an organic detrital bed, reworking cannot be ruled out. The Triticites from unit 29, 3,027 feet above the base O O u o 0 0 O 0 CJ Hi c^ *v also collected by Hose and Repenning (1959, p. mollusks are limited to a few scattered pelecypods; 2177) in the upper part of the Arcturus Formation. and rare fragments of trilobites complete the list. It is regarded as a good indicator of Leonard age. All are typical of the Rugoclostus zone, and many of Unconformity at the base of the Park City For them are found also in the Lake Point Limestone. mation. Although the possibility cannot be elimi Several differences with regards to abundance are nated that the uppermost beds of the Kessler Can apparent, however. Rugoclostus is relatively rare in yon Formation are Early Permian (Wolfcamp) in the West Canyon Limestone, while Flexaria sp. A, age, nevertheless, typical Wolfcamp and early Leon not a very common species in the Lake Point, is ard faunal assemblages are unknown in the Rogers locally abundant in the West Canyon. Canyon sequence. This is in contrast to the sequence A small coarse-ribbed marginiferid productoid re on South Mountain, west of the Bingham block, ferred to Elliottella in table 5 is absent in the Lake where presumed pre-Grandeur rocks totaling nearly Point but found locally in the lower part of the West 6,000 feet in thickness were found by Welsh and Canyon; it is particularly common at a level about James (1961, p. 4-7) to contain Early Permian 165 feet above its base. This same species occurs in (Wolfcamp) fusulinids, at least in their middle part. Provo Canyon in the Wasatch Range, where it is We conclude, therefore, that an unconformity at abundant in the top few feet of the Manning Canyon the base of the Grandeur Member of the Park City Shale. The difference in the stratigraphic level of Formation in the Rogers Canyon sequence accounts the peak zone of this species at the two localities is for most, if not all, of Wolfcamp time and part of paralleled by the base of the Rugoclostus zone. The Leonard time. first appearance of the fossils of this zone occurs roughly 100 feet below the top of the Manning Can BINGHAM SEQUENCE yon Shale in Soldier Canyon (Oquirrh Mountains) The Paleozoic rocks of the Bingham sequence in and at the base of the medial limestone of the Man clude formations of Cambrian to Late Pennsyl- ning Canyon Shale in the area just south of Provo vanian age. The pre-Oquirrh rocks have been de Canyon (Wasatch Range). These two pairs of bio- scribed in some detail by Gilluly (1932) and are not stratigraphic tie points indicate an eastward trans the concern of this paper. The rocks of Gilluly's gression of the base of the Oquirrh Group from the Oquirrh Formation were not subdivided; Welsh and Oquirrh Mountains to the Wasatch Range. James (1961) proposed the Oquirrh Group and Microfossils were not collected in the Wert Can subdivided it. These subdivisions are modified in yon Limestone, but Nygren (1958, p. 14) reported Tooker and Robert's part of this report, where they that he found the fusulinid genus Millerella present have been divided in ascending order into the West 890 feet above the base of the formation. Canyon Limestone, Butterfield Peaks Formation, and the Bingham Mine Formation, the last com The bed crowded with Linoproductus nodosus posed of the Clipper Ridge and Markham Peak (Newberry), mentioned earlier in the discussion of Members. the Lake Point Limestone, occurs in the Soldier Canyon section, 90 feet below the top of the West Thirty-seven collections of megafossils from the Canyon Limestone. The abundance of this species at Oquirrh Group have been studied. Most of these this level is believed to signal a late Morrow age for came from the type and reference sections of the the upper part of the formation. The top of the West formations enumerated above. In addition, some 30 Canyon Limestone in the Bingham sequence approxi fusulinid collections were studied by R. C. Douglass. mates the top of the Lake Point Limestone of the Rogers Canyon sequence. A Morrow age is suggested WEST CANYON LIMESTONE for the entire West Canyon Limestone. The fauna of the West Canyon Limestone is simi lar to that found in the upper part of the Lake Point BUTTERFIELD PEAKS FORMATION Limestone of the Rogers Canyon sequence. Fossils The fauna of the Butterfield Peaks Formation identified in seven collections from the reference approximates that of the Erda Formation of the section in West Canyon (p. A51) and four collec Rogers Canyon sequence. Nine collections from the tions from the reference section in Soldier Canyon type section (p. A52) and 11 collections from the (p. A51) are listed in table 5. Brachiopods are by reference section (p. A52) (measured from tlN e ridge far the most abundant constituents of the fauna; north of Soldier Creek to peak 9075, sees. 26, 27, bryozoans are fairly common; corals are very rare; and 34, T. 4 S., R. 4 W. Stockton quadrangle) have UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A 51 TABLE 5. Megafaiina of the West Canyon Limestone in its reference sections in West Canyon and Soldier Canyon. [Symbols explained in text] Soldier West Canyon Canyon reference reference section section Unit 2 4 5 12 2 4 7 14 » IN « CO 00 00 to CO * Cl CO * * * to to i- 10 10 CD 1-1 i-l iH IN * * iH CO 11769-PC513 O> T-T U 0 0 O u o o o 0 O PM V PH PM PM FM FM ^ t -f ^t- i-l » o> CO o ti 00 O » IO N » » to to to CO t- 1-1 i-l TJSGS colln. No TH CO iH to CO I- t- l- TH TH o T-t iH o o TH 1-1 iH Ol O} 01 Ol M IN IN TH 1-1 iH Corals : R R Bryozoans : X X R R R R R X X R X X X X R R R R X X X R X Echinoderms : R R Brachiopods : X ? R EUiottella sp. A c R X R X R R X X X X X R X R X Antiquatonia aff. A. coloradoensis (Girtv) _ X X C R C X Linoproductus sp. A _ " R R c R C R 7 X X ? C X X X X X ? R R R X R Cleiothiiridina ct. (7. orbicularis (McChesney) _ _ X X X R X X X X c R R X Pelecypods : Mi/alina"! sp. indet R R R R R R Willkingia ? sp. indet R Trilobites : Paladin! sp. indet R R been studied. The fossils from these 20 collections are C. Douglass (written commun., 1962) at a level 941 listed in table 6. feet above the base of the reference section indicates Chaetetes was found in the type section only, 436 a Des Moines age for this part of the section, but feet above the base of the formation. According to does not indicate earliest Des Moines age. Welsh and James (1961, p. 11), Profusidinella oc Desmoinesia muricatina (Dunbar and Condra) curs in the Chaetetes-beaicing limestone beds, but was represented only by a single example in one whether in place or reworked, as is the case in the collection, 920 feet above the base of the formation Erda Formation, is not clear. They also reported in the reference section, where it was associated Fusulinella from limestone beds higher in the sec with Kozlowskia and Neospirifer. The absence of tion. The Multithecopora zone was recognized in the beds with abundant Desmoinesia muricatina in the type section at levels 940 and 1,027 feet above the Butterfield Peaks Formation type section is a local base; in the more intensely collected reference sec facies condition. The gray-black shale beds in which tion, corals typical of this zone occur from 525 to this species is found in profusion in the Erda For 1,470 feet above the base. As in the Erda Forma mation are also present in other sections of the tion, Kozlowskia aff. K. haydenensis (Girty) and Butterfield Peaks Formation. Neospirifer cf. N. coloradoensis Stevens range Beds crowded with bryozoans occur in the upp?.r through much of this zone. part of the formation. A large collection from one The occurrence of Fusulina sp., recognized by R. of these beds was made in the reference section, A52 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH TABLE 6. Megafauna of the Butterfield Peaks Formation at its type and reference sections [Symbols explained in text] West Canyon type Soldier Canyon and reference sections reference section Unit 3 4 5 7 14 IS 20 26 3 4 5 6 7 10 11 IS tc c t- OS CI iH 10 a> >o 10 M o * w 9> M 10 M * ei 1H es |S0306-PC4,131 i~ iH M 10 00 IN o « 9> iH o * e* CO CO 10 GO w*" * >O w I- A e-» * M 00 r-l 20324-PC3,553 20325-PC3,627 r-T iH ci OS >o lH e* e* M O O O O O 0 O O 0 O 0 0 0 U 0 0 0 PH OH fc OH OH P^ OH OH OH OH fc OH fc ^ ^ ^ ^ Cl M O5 CJ CO 10 i~ 00 10 w ti CO O5 o iH M M USGS colln. No ______M M Ci o 0 0 0 o r-l iH iH M fl N ct M M CJ M M CO CO 08 CO CO M CO M M M M 0 0 0 0 o o O O 2? 0 O O O O O O M fl MULTITHECOPORA-KOZLOWSKIA ASSEMBLAGES Corals : R C R R X R X X cf. X X X Bryozoans : R R R R R R R R R X X r Fenestella spp X X X R R X X X c R R R -__,r R R 1 R R X R R R X X c Brachiopods : Koelowskia aff. K. haydenensis (Girty) X R R Desmoinesia muricatina (Dunbar & Condra) _ _ R Flexarial sp. indet _ _ _ R Linoproductus sp R R R R Cf. C C 1 R X R R X R R F X R R R R Trilobite : R R INTERMEDIATE & PRISMOPORA ASSEMBLAGES Corals : R Bryozoans : >. Prismopora sp X Tabulipora sp R r r X R R T Y R T Matheropora sp T Rhabdotneson sp T Y R Echinoderms : X X Brachiopods : R C R Linoproductus prattenianus (Norwood & Pratten) _____ R Cleiothyridina sp. indet R Gomposita subtilita (Hall) r 3,627 feet above the base of the formation. Charac 1962) at several levels in the type section. F^sulina teristic genera are Prismopora, Chainodictyon, sp. occurs in association with textulariids and Wede- Ichthyorachisl, Diploporaria, Matheropora, Rhab- kindellina sp. 1,327 feet above the base of the for domeson, and Rhombocladia. These were not re mation (unit 4), and in association with text\ilarii.ds corded lower in the formation. The beds containing 5,429 feet above the base (unit 26) ; Fusulina is these forms are correlative with the Prismopora- present without associated larger Foraminfera 5,- bearing beds in the upper-middle part of the Erda 449 (unit 26) and 6,081 (unit 31) feet abnve the Formation and are regarded as late Des Moines in base. Fusulinella sp. was identified by Douglass at age. levels 2,301 (unit 6) and 6,048 (unit 31) feet above Fusulinid evidence for Des Moines age was en the base of the type section. countered by R. C. Douglass (written commun., Only 235 feet of beds at the top of the reference UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A53 Relative section have not as yet provided fossil evidence as abundance to the age of the rocks. We regard the beds in the Crinoid columnals _ X reference section, from the first appearance of Koz- Chonetinella sp _____ B loivskia aff. K. haydensis to the final appearance of Antiquatonial sp. indet __ B the Prismopora assemblage, as Des Moines in age. Linoproductus sp. indet _ _ B For practical purposes, we include all but the lower This megafauna is not sufficiently diagnostic to few hundred feet in the Des Moines Series. The enable one to determine the relative age of these lower beds are Atoka in age. The Butterfield Peaks beds. The age assignment must necessarily depend Formation correlates directly with the Erda Forma upon the fusulinids, and it is clear that as the bf.sal tion of the Rogers Canyon sequence. beds of the Clipper Ridge Member contain Triticites of a type characteristic of the Missouri Series, even BINGHAM MINE FORMATION though they appear reworked, this member can be Megafossils are scarce and poorly preserved in no older than Missouri in age. the Bingham Mine Formation, except at one locality Triticites occurs also at levels 1,284 (unit 6), of uncertain stratigraphic position, where a large 1,967 (unit 9), 2,379 (unit 11), 2,627 (unit 15), and varied fauna was found. The fossils found most 2,772 (unit 16), 2,957 (unit 18), and 2,980 (unit frequently and in greatest numbers are fusulinids, 20) feet above the base of the member (and forma but many of these are silicified and show signs of tion). Other Foraminifera found with that genus having been reworked. Despite the uncertainties lopally include textulariids, Millerella sp., Bradyina generated by structural complication, reworking, sp., and Kansanellal sp. Although R. C. Douglass and poor preservation, fairly reliable deductions (written commun., 1962) pointed out that the Tri can be made concerning the age of this formation ticites at 2,790 and 2,957 feet above the base of the and of the two members into which it has been member are hardly distinguishable from forms of divided. In the following discussion, fossils of the Virgil age, the presence of fairly well preserved type sections of both members are considered in Missouri fusulinids in the top 5 feet of the member ascending order, after which the large fauna col (unit 20), as well as in the lower part of the over lected west of Lark is recorded. lying Markham Peak Member, indicates that the CLIPPER RIDGE MEMBER entire Clipper Ridge Member is of Missouri age. The fusulinids in 11 collections from the type sec Syringoporoid corals are fairly common in the tion were studied by R. C. Douglass (written upper part of the Clipper Ridge Member. One of commun., 1962). Most of them were referable to the these, from unit 18 of the type section (USGS coUn. genus Triticites. Foraminifera identified by Doug 23890-PC), was identified by Miss Duncan as lass are listed in the register of Late Paleozoic fusu- Syringopora multattemiata, McChesney ?. It is not an linid collecting localities in this report. Three collec entirely typical example of the Missourian form ?.nd tions of megafossils from the type section were stud may actually represent an undescribed species ied by the writers. Two of them contained corals closely allied to S. multattenuata. unidentifiable as to genus. The third collection is MARKHAM PEAK MEMBER listed below. Fusulinid specimens that were scattered and that The fossils in the type section of the Markham appeared worn, were collected from unit 2 of the Peak Member are sparse and poorly preserved. No type section, 10 feet above the base of the forma megafossils were collected in this section. The age tion; they were identified by R. C. Douglass (written determinations are based entirely upon evidence commun., 1962) as Triticites sp. of probable Mis provided by fusulinids, most of which are referable souri age. In the same unit, 114 feet above the base to the genus Triticites. R. C. Douglass (written of the formation, the following megafossils were commun., 1966) recognized Triticites at levels D40 recognized (USGS colln. 22486-PC). (unit 11), 960 (unit 11), 1,025 (unit 11), 1,566 (unit 13), 1,603 (unit 13), 2,547 (unit 15), 3,240 Relative abundance (unit 19), and 3,989 (unit 21) feet above the b^se Stenoporid bryozoan, massive form ______X of the member in its type section. The only otl^er Trepostomatous bryozoan, ramose form ______R Foraminifera found associated with Triticites in Fenestella sp ______X Polypora sp ______R is member is Climacammina, sp. in units 11 rnd Penniretepora sp ______X 13. Rhombocladia sp ______X R. C. Douglass (written commun., 1966) regarded A54 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH Relative the fusulinids of units 11 and 13 as Missouri in age. abundance Those of unit 15 are similar but appear to have Crurithyris planiconvexa (Shumard) X been reworked. Three collections of fusulinids, from Cleiothyridina orbicularis (McChesney) X units 19 and 21 were regarded by Douglass as con Hiistedia mormoni (Marcou) A taining Triticites of Virgil affinities. The highest Punctospirifer sp _ R of these collections occurred 1,462 feet below the top Reticulariina sp _ R Echinoderms: of the uppermost bed in the type section of the Crinoid cohimnals __ X Markham Peak Member. No fossils were found in Echinoid spines _ R these highest beds. Worms: Spirorbis sp __ R Fauna collected near Lark. About 1*4 miles west Unidentified tubes ______X of Lark, on the north slope of Copper Gulch, a very Pelecypods: fossiliferous locality has yielded a fauna of 60 spe Astartellat sp. indet _ R cies of invertebrates. Three collections (USGS collns. Conocardium sp. indet ______R 18892-PC, 20311-PC, and 21151-PC) made in 1959 Gastropods: Euphemites sp. indet ____ _ R and 1962 contained the following species: Knightites (Retispira) sp. indet _ X Relative Sinuatinal sp. indet -- R abundance Baylea sp _ _ X Foraminif era: Peruvispirat sp. indet _ - R Bradyina sp ______R Pleurotomariacean, gen. and sp. indet - R Corals: "Strophostylus" sp _ _- - X Caninoid coral, gen. and sp. indet ______R Naticopsis (Naticopsis) sp _- X Michelinial sp ______R (new subgenus) sp. indet R Cladochonusl sp ______R Meekospira sp ___ _ - R Bryozoans: Omphalotrochus wolfcampensis Yochelson X Fistuliporoid, incrusting form ______R Omphalotrochust cf. O. obtusispira (Shumard) R Fistuliporoid, ramose form ______R Trilobites: Ramiporalia sp ______R Ditomopyge sp ___ _ - X Stenoporoid, incrusting form ______R The presence of such genera as Kochiproductus, Rhomboporella sp ______X Fenestella aff. F. austini Elias and Condra Chaoiella, Pemvispirat, and Omphalotrochus sug aff. F. archimediformis Elias and Condra R gest a late Virgil or early Wolfcamp age for this (Cervella) aff. F. (C.) cruciformis Elias assemblage. The brachiopod fauna is very similar to and Condra ______C that of the Omphalotrochus wolfcampensis-besucmg (Polyporella) sp ______R beds in the lower part of the Kessler Canyon Forma Polypora cf. P. andina Chronic ______X sp ______C tion at the north end of the range. In the Kessler Septopora sp ______R Canyon, fusulinid evidence indicates a late Virgil Penniretepora sp ______C (or slightly younger) age for these beds. Similar Acanthocladial sp ______R fusulinids are found in the Markham Peak Member Ptylopora sp ______R of the Bingham Mine Formation. The rocks west of Coeloconusl sp ______X Rhombocladia sp ______C Lark containing the Omphalotrochus wolfcampensis Rhomboporoid, gen. and sp. indet ______X assemblage are assigned, therefore, to the Markham Brachiopods: Peak Member despite the fact that this faunal Derbyia sp ______X assemblage was not recognized in the type section Chonetinella cf. C. alata (Dunbar and Condra) C Neochonetes cf. N. granulifer (Owen) ____ R of that member. Krotovia sp ______X Complicating this problem is the geograpHc posi Kozlowskia aff. K. splendens (Norwood and tion of this fossil locality in an area mapped as Pratten) ______C Clipper Ridge Member by Tooker and Roberts, at a Ret aria sp ______R point approximately where the Commercial lime Chaoiella sp ______C Kochiproductus aff. K. peruvianus stone might be expected to crop out (E. W. Tooker, (d'Orbigny) ______X oral commun., 1969). We conclude that the fcssilifer- Antiquatonia sp ______X ous beds are part of an infaulted block of the Mark- Linoprodnctus sp ______X ham Peak Member not recognized as such in the CancrineUa sp ______.___ C field. Unfortunately, before this conclusion could be Rhynchopora sp ______R Neospirifer sp. indet ______R tested by further mapping in that area, tN fossil Phricodothyris perplexa (McChesney) ____ C locality was engulfed by southward extension of the UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A55 waste piles from the Bingham open pit mine and the Oquirrh Formation of the Timpanogos sequence buried beneath tons of loose rock. in the central Wasateh Mountains (Baker, 1947), in the central facies of the same formation in the CORRELATION AND AGE OF THE BINGHAM MINE FORMATION Gold Hill region south of Wendover, Utah (Nolan, The evidence recorded in the preceding discussion 1935, p. 35-39; L. C. Henbest, written commun. to suggests that roughly the lower half of the Bingham R. Hose, 1957), in the Ferguson Springs Formation Mine Formation, including the Clipper Ridge Mem of Steele (1960, p. 101) at Ferguson Springs Moun ber and the beds up to the middle of unit 13 of the tain, Elko County, Nev., and at Spruce Mountain, type section of the Markham Peak Member, is equiv farther west in the same county (R. C. Douglass, alent to the Upper Pennsylvanian Missouri Series. oral commun., 1969). A belt of such rocks extends The aggregate thickness of these beds is 4,590 feet. through the southeastern and southern parts of tN Missouri fusulinids 5,532 feet above the base of the Great Basin, particularly in Lincoln and Clark formation are reworked and whether they are actu Counties, Nev. Sections of these Late Pennsylvania n ally in beds of Missouri or Virgil age is a matter for and Early Permian rocks, within the Bird Sprir*? conjecture. Formation, have been documented in the Arrow Fusulinids of Virgil age occur in place 6,225 to Canyon Range (Langenheim and Langenheim, 196E) 6,975 feet above the base of the formation in the and on Spring Mountain near Las Vegas (Rich, Markham Peak Member. It is to this part of the 1961). formation that the large Omphalotrochus wolfcam- Over much of the central part of the Great Basin pensis fauna collected west of Lark should be as a hiatus, equivalent to all or part of the Bingham signed. Our reasoning is based upon the relationship Mine Formation, is present. This hiatus has pre of the similar though less abundant fauna near the viously been delineated by Steele (1961, chart 1) base of the Kessler Canyon Formation in the Rogers who referred to it as the "Regional Middle Penn Canyon sequence and the fusulinids contained in sylvanian unconformity." In some places the rocks that same formation. below the unconformity are as old as Meramec No fossils of Permian age have been recognized (early Late Mississippian) in age and the rocks in the Bingham Mine Formation. The type section above it as young as middle Wolfcamp (Early Per for this formation was originally designated by mian) in age. In figure 13, some of the sections in Welsh and James (1961, p. 9) as occupying part of which this hiatus is well developed are shown. the main ridge of South Mountain, which borders In the Confusion Range this hiatus is marked by the south edge of Tooele Valley at the western base an unconformity within the Ely Limestone, between of the Oquirrh Mountains. According to E. W. the Pennsylvanian and Permian parts of the forma Tooker (oral commun., 1969) the rocks that make tion (Hose and Repenning, 1959, p. 2174). Hose's up South Mountain are part of a thrust sheet that mapping in this region and stratigraphic studies by is separate from the Bingham sequence. Welsh and Gordon have shown that over a considerable area James regarded the formation as restricted to beds carbonate rocks of Early Permian (Wolfcamp) age of Late Pennsylvanian age. Even though the 1,462 rest on carbonate and fine clastic rocks of Middle feet of unfossiliferous beds in the upper part of this Pennsylvanian (Des Moines) age. The same ur- formation in the Bingham sequence makes it impos conformity has been recognized in the southern part sible to say unequivocally that no Permian beds are of the Schell Creek Range in White Pine County, present in it in the Oquirrh Mountains, it would Nev., by Drewes (1967). It extends also into the seem reasonable to maintain Welsh and James' age Ely mining district where the name "Ely Limestone" assignment of the Bingham Mine Formation here has been restricted to beds of Pennsylvanian age. as Late Pennsylvanian throughout unless evidence The overlying Lower Permian limestone has been to the contrary becomes available. given the name Riepe Spring Limestone (Steele, The correlation of the lower part of the Bingham 1960, p. 93, 102). Mine Formation with the section in the Rogers In the Eureka mining district, Nev., Early Per Canyon sequence remains an enigma. Although mian (Wolfcamp) rocks above this unconformit" more than 5,500 feet of this formation contains are referred to the Carbon Ridge Formation (Nolan fusulinids of Missouri age, in the Rogers Canyon and others, 1956, p. 62-64). Supposed Missouri sequence no Missouri fossils have been recognized. fusulinids reported from the Carbon Ridge occur, Beds of Missouri through Wolfcamp age, equiva according to Douglass (oral commun., 1970), with lent to the Bingham Mine Formation are known in Wolfcamp species. The youngest rocks of the Ely A56 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH 1 2 3 4 5 6 7 8 9 ROGERS PROVINCIAL TIMPANOGOS BINGHAM EGAN RANGE, EUREKA ANTLER CO CANYON CONFUSION CARLIN LU LLJ SERIES SEQUENCE SEQUENCE SCHELL CREEK ELY MINING PEAK CC. SEQUENCE RANGE, REGION LLJ MINING to WASATCH MTS OQUIRRH MTS RANGE, DISTRICT AREA CO OQUIRRH MTS UTAH DISTRICT NEVADA UTAH UTAH NEVADA NEVADA N:VADA UTAH NEVADA WOLFCAMP Upper part Upper part s of Riepe Spring Carbon Ridge CC. o of Strathearn Limestone Formation AnthrPeak Ely Limestone Ely Limestone Formation ? of Dott Limestone (1955) o Kessler Canyon is cc. E 5 Formation O O- E 1 Bingham Mine Formation ^3 O ~E | o O I o O HSYLVANIAN to o LLJ O / z £3 0 Q_ Q Butterfield Erda ^ Peaks Formation Formation i \ a: Battle a: Conglomerate Lower part Lower part Ely OquirrhGroup of of Ely I Limestone Ely Limestone Ely Limestone Limestone Ely Limeston West £ Canyon ~" 0 Limestone Lake Point ______Limestone , Manning Canyon Manning Diamond MISSISSIPPI Shale Peak to Canyon Diamond LLJ Chainman Chainman Chainman Formation => 3; Shale Peak Shale Shale Shale Formation i FIGURE 13. Correlation chart of sections in the central Great Basin. r-UPPER -- PALEOZOIC -- ROCKS-r IN THE- OQUIRRHi MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH / 57 shown on the correlation chart (fig. 1) is in excess of 7,000 square miles, but eventually we may f nd 1 8.nElk° 3 DSalt Lake City ' that it occupied a much greater part of the Gr?at 1I »yQ o»* Basin region. i .1 Eureka Q _ REGISTER OF LATE PALEOZOIC MEGAFAUNA NEVADA " 6^ E'y - 4 UTAH COLLECTING LOCALITIES IN THE 5 OQUIRRH MOUNTAINS, UTAH \ U8QS CoUn. \ No. Descriptions and collectors \ 16318-PC Garfield 7% -minute quadrangle, Tooele County. \ Green Ravine-Rogers Canyon measured sec \ I tion. On ridge southwest of 6231 peak, in the \ 1 SOURCES NEUNW%NW% sec. 6, T. 2 S., R. 3 W., \ 1. A. A. Baker (1947) \ r~xJ< 2. This paper at approximately 5,500 ft elevation. Lake \> 3. This paper Point Limestone. Prominent 5-ft colonial coral i 4. R. K. Hose and bed, unit 4 of type section, 583 ft above base \\ C. A. Repenning(1959) v 5. Harold Drewes (1967) of formation. Collected by R. J. Roberts, 1?56. 6. Grant Steele (1960) 16319- PC Garfield 7% -minute quadrangle, Tooele County. 7. T. B. Nolan, C. W. Merriam, and J. S. Williams (1956) Green Ravine-Rogers Canyon measured sec 8. R. H. Dott, Jr. (1955) tion. Same general locality as 16318-PC. Lake 9. R. J. Roberts (1964) Point Limestone. Collected from dark-g~ay FIGURE 13. Continued medium-bedded limestone about 34 ft ab^ve base of unit 5 of type section, 622 ft abrve base of formation. Collected by R. J. Roberts, mestone beneath the unconformity are Middle 1956. Pennsylvanian (Atoka) in age. Locally, as at Conical 16322-PC Garfield 7%-minute quadrangle, Tooele Courty. Hill near Eureka, the Carbon Ridge Formation rests Green Ravine-Rogers Canyon measured rec- on rocks of late Meramec age of the Diamond Peak tion. Same general locality as 16318-PC. Lake Formation. Point Limestone. Collected in dark-gray lime In the Carlin region the same unconformity is stone, 40 ft above base of unit 5 of type fac present between the top of the Ely (Tomera Forma tion, 628 ft above base of formation. Collected by R. J. Roberts, 1956. tion of Dott (1955) and the base of the Strathearn Formation of Dott (1955). The basal part of the Stra 16323-PC Garfield 7%-minute quadrangle, Tooele Courty. Green Ravine-Rogers Canyon measured sec thearn contains f usulinid-bearing beds of Late Penn tion. On ridge southwest of 6231 peak at ap sylvanian (Virgil) age. Locally, as in Carlin Can proximately 5,700 ft elevation, in the yon, the Strathearn rests on Diamond Peak beds of NE^NW 1^ sec. 6, T. 2 S., R. 3 W. Lake early Meramec age. At the last two localities, which Point Limestone. Collected from dark-g^ay lie along the Antler erogenic belt, uplift is indi cherty limestone, 150 ft above base of unit 5 of type section, 738 ft above base of formation. cated at an earlier time than in the region to the Collected by R. J. Roberts and E. W. Tool-er, east. 1956. In the Antler Peak area, near Battle Mountain, 16324-PC Garfield 1% -minute quadrangle, Tooele Courty. Nev., a similar unconformity occurs at the contact Green Ravine-Rogers Canyon measured sec of the Battle Conglomerate, of Middle Pennsylvanian tion. Same general locality as 16323-PC, at (Atoka) age, and the overlying Antler Peak Lime approximately 5,800 ft elevation. Lake Pcfnt Limestone. Collected from cherty dark-g~ay stone of Late Pennsylvanian (Virgil) and Early limestone, 113 ft above base of unit 7 of t;npe Permian (Wolfcamp) age (Roberts, 1964). Like the section, 866 ft above base of formation. Col Strathearn Formation, the Antler Peak includes lected by R. J. Roberts and E. W. TooHr, fusulinid-bearing beds of late Virgil age in its lower 1956. part. 16325-PC Garfield 7 1A-minute quadrangle, Tooele Courty. Not enough data are available to delimit the area Green Ravine-Rogers Canyon measured sec covered by this unconformity. Subsequent tectonic tion. On ridge in center of sec. 31, T. 1 S., R. 3 W. Erda Formation. From dark-gray cal events have combined to alter its original area careous shale probably at about same level as somewhat. Rigid faunal control will be necessary to 16326-PC. Collected by R. J. Roberts, It 56. recognize its margins in places where its magnitude 16326-PC Garfield 7%-minute quadrangle, Tooele Courty. has dwindled. Its extent, measured by the sections Green Ravine-Rogers Canyon measured sec- A58 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH CoUn. USGS CoUn. No. Descriptions and collectors No. Descriptions and collectors tion. On ridge on north side of Rogers Can hill, in SW^NWH sec. 6, T. 2 S., R 3 W. yon, slightly north of center of sec. 31, T. 1 Green Ravine Formation. Collected in inter S., R. 3 W., at elevation of approximately bedded limestone, cherty limestone, and are 6,200 ft. Erda Formation. Collected from naceous limestone, 158 ft above base of unit dark-gray cherty limestone, 104 ft above base 11 of type section, 1,029 ft above base of of unit 13 of type section, 1,494 ft above formation. Collected by R. J. Roberts and base of formation. Collected by R. J. Roberts E. W. Tooker, 1956. and E. W. Tooker, 1956. 16333-PC Garfield 7%-minute quadrangle, Tooele County. 16327-PC Garfield 7%-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measrred sec Green Ravine-Rogers Canyon measured sec. tion. Same general locality as 16332-PC. tion. Same general locality as 16326-PC, from Green Ravine Formation. Collected across a about 6,300 ft in elevation. Erda Formation. 60-ft section of dark-gray limestone and Collected in dark-gray cherty limestone, 10 argillaceous limestone beginning 97 ft above ft above base of unit 14 of type section, 1,703 base of unit 12 of type section and 1,299 ft ft above base of formation. Collected by R. J. above base of formation. Collected by R. J. Roberts and E. W. Tooker, 1956. Roberts and E. W. Tooker, 1956. 16328-PC Garfield 7%-minute quadrangle, Tooele County. 16334-PC Garfield 7%-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec At about 6,000 ft elevation in tributary of tion. North side of Rogers Canyon in north Big Canyon (just north of word "Big" on center sec. 31, T. 1 S., R. 3 W., at elevation topo sheet) in NE^NE^NW^ se-. 7, T. of approximately 6,600 ft. Erda Formation. 2 S., R. 3 W. Erda Formation. Collected from Collected from 4-ft light-gray crinoidal lime dark-gray fossiliferous limestone near base of stone, unit 25 of type section, 2,515 ft above unit 1. Collected by R. J. Roberts an U8G8 GoUn. USGS CoUn. No. Descriptions and collectors No. Descriptions and collectors terbedded limestone and argillaceous lime tion. On ridge southwest of 6231 peal- at stone, 258 ft above base of unit 11 of type about 5,725 ft elevation, in the NE%N"V% section, 1,129 ft above base of formation. sec. 6, T. 2 S., R. 3 W. Lake Point Limestone. Collected by M. Gordon, Jr., and R. J. Roberts, Collected from limestone bed just below 4-ft July 8,1957. yellow quartzite, 155 ft above base of urit 7 17144-PC Garfield 7%-minute quadrangle, Tooele County. of type section, 908 ft above base of forma Green Ravine-Rogers Canyon measured sec tion. Collected by M. Gordon, Jr., R, J. tion. Same general locality as 17143-PC. Roberts, E. W. Tooker, July 8, 1957. Green Ravine Formation. Collected from 17151-PC Garfield 7%-minute quadrangle, Tooele County. impure gray limestone, a few feet below Green Ravine-Rogers Canyon measured sec 16333-PC, approximately 1,290 ft above base tion. About 700 ft southwest of summit of of formation. Collected by M. Gordon, Jr., and 6231 peak on ridge in SW^SEiiSW 1^ sec. R. J. Roberts, July 8, 1957. 31, T. 1 S., R. 3 W., at elevation of 5,79r ft 17145-PC Garfield 7%-minute quadrangle, Tooele County. above sea level. Erda Formation. Collected Green Ravine-Rogers Canyon measured sec from light-gray limestone, 157 ft above base tion. At cairn on lower slopes of ridge south of unit 1 of type section. Collected by M. west of 6231 peak, a few tens of feet north Gordon, Jr., R. J. Roberts, and E. W. Tooker, of unnamed ravine north of Green Ravine, July 9,1957. near center of NW*4 sec. 6, T. 2 S., R. 3 17152-PC Garfield 7%-minute quadrangle, Tooele County. W. Lake Point Limestone. Collected from Green Ravine-Rogers Canyon measured sec medium-dark-gray limestone with shale part tion. On north side of Rogers Canyon about ings, 143 ft above base of unit 1 of type 75 ft above canyon bottom, at elevatior of section. Collected by M. Gordon, Jr., R. J. about 5,500 ft above sea level, in the Roberts, and E. W. Tooker, July 8, 1957. NE%SWH sec. 31, T. 1 S., R. 3 W. F-da 17146-PC Garfield 7%-minute quadrangle, Tooele County. Formation. Collected from fossiliferous gray Green Ravine-Rogers Canyon measured sec limestone, 182 ft above base of unit 1 in type tion. Same locality and bed as 16318-PC. section. Collected by M. Gordon, Jr., R. J. Collected by M. Gordon, Jr., R. J. Roberts, Roberts, and E. W. Tooker, July 9, 1957. and E. W. Tooker, July 8, 1957. 17153-PC Garfield 7%-minute quadrangle, Tooele County. 17147-PC Garfield 7%-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec Same general locality as 16318-PC. Lake tion. Same locality as 17152-PC. Frda Point Limestone. Collected from dark-gray Formation. Collected from limestone a few limestone and argillaceous limestone, 55 ft feet above 17152-PC. Collected by M. Gordon, above base of unit 5 of type section and 643 Jr. and E. W. Tooker, July 9, 1957. ft above base of formation. Collected by M. 17154-PC Garfield 7%-minute quadrangle, Tooele County. Gordon, Jr., R. J. Roberts, and E. W. Tooker, Green Ravine-Rogers Canyon measured sec July 8,1957. tion. Same general locality at 17152-PC. 17148-PC Garfield 7 1/&-minute quadrangle, Tooele County. Erda Formation. Collected from light-pray Green Ravine-Rogers Canyon measured sec limestone, 6 ft thick, below crossbedded cal tion. Same general locality as 16318-PC but careous sandstone or sandy limestone, 12r ft higher on ridge. Lake Point Limestone. Col above base of unit 3 of type section, 52? ft lected from medium-dark-gray limestone, above base of formation. Collected by M. about 20 ft above base of unit 7 of type sec Gordon, Jr., R. J. Roberts, and E. W. Tooker, tion, 773 ft above base of formation. Col July 9,1957. lected by M. Gordon, Jr., R. J. Roberts, and 17155-PC Garfield 7%-minute quadrangle, Tooele County. E. W. Tooker, July 8, 1957. Green Ravine-Rogers Canyon measured sec 17149-PC Garfield 7%-minute quadrangle, Tooele County. tion. Same general locality as 17152-PC but Green Ravine-Rogers Canyon measured sec at elevation of roughly 5,700 ft. Erda Forma tion. Same general locality as 16318-PC at tion. Collected in light-gray limestone, 10-12 elevation of 5,690 ft above sea level. Lake feet thick, underlying calcareous sandstone, Point Limestone. Collected in limestone, about 72 ft above base of unit 4 of type section, 604 117 ft above base of unit 7 of type section, ft above base of formation. Collected by M. 870 ft above base of formation. Collected by Gordon, Jr., and R. J. Roberts, July 9, 1957. M. Gordon, Jr., R. J. Roberts, and E. W. 17156-PC Garfield 7%-minute quadrangle, Tooele County. Tooker, July 8, 1957. Green Ravine-Rogers Canyon measured sec 17150-PC Garfield 7%-minute quadrangle, Tooele County. tion. Same locality as 17155-PC, but from Green Ravine-Rogers Canyon measured sec- base of 6-ft light-gray limestone separated AGO GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH rSGS CoUn, USGS CoUn. No. Descriptions and collectors No. Descriptions and collectors by 4 ft of calcareous sandstone from lime 2,153 ft above base of formation. Collected stone of 17155-PC. Overlain by 15 ft of yel by M. Gordon, Jr., R. J. Roberts, and E. W. lowish chert. Collected by R. J. Roberts and Tooker, July 10,1957. E. W. Tooker, July 9,1957. 17166-PC Garfield 7%-minute quadrangle, Tooele County. 17157-PC Garfield 7^-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec Green Ravine-Rogers Canyon measured sec tion. On flatter part of ridge at elevr.tion of tion. Same ridge as 17155-PC but roughly approximately 5,475 ft, on line between 50 ft higher. Erda Formation. Bryozoans and SE^SE^NW 1^ and SW^SE^NE^ sec. 31, Linnproductus from 5-ft yellow chert bed; T. 1 S., R. 3 W. Erda Formation. Collected Spirifer and Composita and corals from over from medium-gray thin-bedded to plat7 argil lying dark-gray limestone and shale; 30 ft laceous limestone, 67 ft above base of unit 19 above base of unit 6 of type section, 752 ft of type section, 2,204 ft above base of forma above base of formation. Collected by M. tion. Collected by M. Gordon, Jr., R. J. Poberts, Gordon, Jr., and R. J. Roberts, July 9, 1957. and E. W. Tooker, July 10, 1957. 17158-PC Garfield 7 % -minute quadrangle, Tooele County. 17167-PC Stockton 15-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec Soldier Canyon measured section. Or north tion. North slope of Rogers Canyon in slope of canyon roughly 75 ft in elevation NE^NE^SW 1^ sec. 31, T. 1 S., R. 3 W. above stream, approximately in certer of Erda Formation. Collected from dark-gray south line of SE%NE% sec. 34, T. 4 S., argillaceous limestone, at base of unit 8 of R. 4 W. West Canyon Limestone. Collected type section, 921 ft above base of formation. from argillaceous limestone, 12-30 feet Collected by M. Gordon, Jr., R. J. Roberts, above base of unit 2 of reference section, E. W. Tooker, July 10, 1957. 53 ft above base of formation. Collected by M. Gordon, Jr., R. J. Roberts, and E. W. Tooker, 17159-PC Garfield 7 %-minute quadrangle, Tooele County. July 11, 1957. Green Ravine-Rogers Canyon measured sec tion. North slope of Rogers Canyon in 17168-PC Stockton 15-minute quadrangle, Tooele County. SW%SW^NE% sec. 31, T. 1 S., R. 3 W. Soldier Canyon measured section. Sarre gen Erda Formation. Collected from gray impure eral locality as 17167-PC but higher on ridge limestone with chert, 30 ft above base of unit in SE^iNEH sec. 34, T. 4 S., R. 4 W. 10 of type section, 1,097 ft base of formation. West Canyon Limestone. Collected from dark- Collected by M. Gordon, Jr., R. J. Roberts, gray argillaceous limestone, 2-7 ft above base and E. W. Tooker, July 10, 1957. of unit 4 of reference section, 354 f", above base of formation. Collected by M. Gordon, 17161-PC Garfield 7 V2 -minute quadrangle, Tooele County. Jr., R. J. Roberts, and E. W. Tooker, July 11, Same locality as 17159-PC but from bed 1957. about 30 ft higher stratigraphically. Collected by R. J. Roberts, July 10, 1957. 17169-PC Stockton 15-minute quadrangle, Tooele County. 17163-PC Garfield 7%-minute quadrangle, Tooele County. Soldier Canyon measured section. Sarre gen Green Ravine-Rogers Canyon measured sec eral locality as last but higher on slop?. West tion. Near middle sec. 31, T. 1 S., R. 3 W. Canyon Limestone. Collected from grray to Erda Formation. Collected from gray cherty brownish-gray arenaceous and argillaceous limestone, 74 ft above base of unit 11 of type limestone about 15 ft above base of unit 7 section, 1,280 ft above base of formation. of reference section, 513 ft above base of Collected by M. Gordon, Jr., R. J. Roberts, formation. Collected by M. Gordon, Jr., R. J. and E. W. Tooker, July 10, 1957. Roberts, and E. W. Tooker, July 11, 1957. 17164-PC Garfield 7%-minute quadrangle, Tooele County. 17170-PC Stockton 15-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec Soldier Canyon measured section. Upslope tion. Same general locality as 17163-PC in from 17169-PC in the SE%NE% sec. 34, saddle on ridge. Erda Formation. Collected T. 4 S., R. 4 W. West Canyon Limestone. from two 1-ft beds separated by 10 ft of Collected from light-gray cherty argillaceous dark-gray impure limestone, beginning 297 ft limestone, 30-41 ft above base of unit 14 of above base of unit 13 of type section, 1,687 reference section, 962 ft above base of forma ft above base of formation. Collected by M. tion. Collected by M. Gordon, Jr., R. J. Rob Gordon, Jr., R. J. Roberts, and E. W. Tooker, erts, and E. W. Tooker, July 11, 1957. July 10,1957. 18486-PC Garfield 7^-minute quadrangle, Tooele County. 17165-PC Garfield 7%-minute quadrangle, Tooele County. Black Rock Canyon measured section. Slope Green Ravine-Rogers Canyon measured sec on west side of Black Rock Canyon at eleva tion. Higher on same ridge. Erda Formation. tion of 5,700 ft in middle part of NE% sec. Collected from medium-gray cherty limestone, 30, T. 1 S., R. 3 W. Kessler Canyon Forma 16 ft above base of unit 19 of type section, tion. Collected from fossiliferous light-brown- UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A61 .S' Colln. U8G8 Colln. No. Descriptions and collectors No. Descriptions and collectors ish-gray cherty limestone, unit 10 of type sec from unit 27 of type section, 1 mile to vest- tion, 675 ft above base of formation. Collected southwest. Collected by E. W. Tooker, 1957. by R. J. Roberts and E. W. Tooker, 1958. 20236-PC Garfield 7^-minute quadrangle, Tooele Cornty. 18490-PC Garfield 7%-minute quadrangle, Salt Lake Co. On south slope of Big Canyon at 6,840-ft At 6,280 ft elevation on ridge, about 0.3 mile contour, 1,300 ft west of tramway tower northeast of summit of hill 7037, on east marked 7417 on topo sheet, in the NE&NW^i slope of Oquirrh Mountains, in the NW}4- sec. 7, T. 2 S., R. 3 W. Erda Formation. Ran SEHNEH sec. 3, T. 2 S., R. 3 W. Grandeur dom collection from upper 50 ft of same ch°.rty Member of Park City Formation. Collected by limestone that is unit 27 in type section, about R. J. Roberts, 1958. 2 miles to north. Collected by E. W. Tooker, 1957. Fusulinids, f22569, from unit 1% miles 18892-PC Lark 7 Vz minute quadrangle, Salt Lake County. south of type section. Copper Gulch, west of Lark, near old Dalton and Lark mine, along west edge of SE^SE 1/^ 20238-PC Garfield 7%-minute quadrangle, Salt Lake sec. 25, T. 3 S., R. 3 W., by powerline just County. East slope of hill 5561 capped1 by north of road at west edge of Lark quad flagpole north of Little Valley. Outcrops 1,300 rangle. Bingham Mine Formation, uncertain ft southeast of flagpole and 500 ft northeast stratigraphic position. Collected by E. L. from check spot elevation 5,166 at 5,240-ft Yochelson, R. J. Roberts, and E. W. Tooker, contour, in the SE^NW 1! sec. 25, T. ] S., July 4, 1959. R. 3 W., 1 mile southeast of copper mill at Arthur. Grandeur Member of Park City For 18893-PC Garfield 7%-minute quadrangle, Tooele County. mation. Collected from fossiliferous sv aly Black Rock Canyon measured section. Same limestone in basal limestone units. Collected locality and stratigraphic unit as 18486-PC. by E. W. Tooker, 1957. Collected by E. L. Yochelson, R. J. Roberts, and E. W. Tooker, July 4, 1959. 20240-PC Garfield 7%-minute quadrangle, Salt Lake County. Coon Canyon, 400 ft due east of 19948-PC Magna 7%-minute quadrangle, Salt Lake County. junction of Right Hand and Left Hand Forks On slope west of town of Magna (west of of Coon Creek, 150 ft north of road at or near word "Mining" on topo sheet) in NW^SW 1^ base of hill approximately at 5,800-ft con sec. 30, T. 1 S., R. 2 W. Grandeur Member of tour, in the NWHNW 1^ sec. 14, T. 2 S., Park City Formation. Same unit as 19949-PC R. 3 W. Grandeur Member of Park City For but 7.5 ft higher stratigraphically in an over mation. Collected from fossiliferous medium- lying bed. Collected by R. J. Roberts, 1961. to thin-bedded limestone in upper part of unit 19949-PC I»Iagna 7%-minute quadrangle, Salt Lake County. 1 of measured section. Collected by E. W. West of town of Magna in SW^NW 1/! sec. 30, Tooker, 1957. T. 1 S., R. 2 W., on Provo Bench (at about 20241-PC Garfield 7 V2 -minute quadrangle, Salt Lake 4,800-ft contour) just north of small draw County. In Porter Hollow in the SE^SW 1^ that lies at intersection of powerline and sec. 11, T. 2 S., R. 3 W., near 20240-PC but section line. Grandeur Member of Park City along strike north of Coon Creek; outcrops Formation, basal limestone bed. Collected by 100 ft above stream. Grandeur Member of R. J. Roberts, 1961. Park City Formation, unit 1. Collected by 20232-PC Garfield 7 }&-minute quadrangle, Tooele County. E. W. Tooker, 1957. Green Ravine-Rogers Canyon measured sec 20242-PC Garfield 7 ^-minute quadrangle, Salt Lake tion. At nose on ridge just above 6.850 ft ele County. In Porter Hollow in vicinity of vation in SW%NW%NE%, sec. 31, T. 1 S., 20241-PC but farther along strike north of R. 3 W. above prominent cliff of dark-gray Coon Creek, in SE%SW% sec. 11, T. ?, S., cherty limestone with medial band of light- R. 3 W. Grandeur Member of Park City For gray crinoidal limestone. Erda Formation. mation, unit 1. Collected by E. W. Tooker, Collected from dark-gray cherty limestone, September 18, 1957. 149 ft above base of unit 27 of type section, 20243-PC Garfield 7%-minute quadrangle, Tooele County. 2,686 ft above base of formation. Collected by Green Ravine-Rogers Canyon measured sec E. W. Tooker and R. J. Roberts, 1957. Fusu- linids, f22568, from same unit 1 mile east- tion. On lower western slope of Oquirrh northeast of type section. Mountains, south of tramway in NE^iTE^ sec. 1, T. 2 S., R. 4 W., almost on qurrter 20235-PC Garfield 7%-minute quadrangle, Tooele County. section line. Green Ravine Formation. Col Black Rock Canyon, bed and east slope of lected from light-olive-gray calcareous ?and- middle fork, in the NWHNE%NE% sec. 32, stone, 3 ft thick, 26 ft above base of unit 6 T. 1 S., R. 3 W., between 6,200- and 6,240- of type section, 92 ft above base of formation. foot contours. Erda Formation. Collected from Collected by H. M. Duncan, E. W. Tooker, same gray cherty limestone as in 20232-PC and R. A. Lewandowski, July 20, 1961. A62 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH rKGS CoUn. USGS Colln. No. Descriptions and collectors No. Descriptions and collectors 20246-PC Garfield 7 V2 -minute quadrangle, Tooele County. from limestone about 160 ft above base of unit Green Ravine-Rogers Canyon measured sec 11 of type section, near locality 16F32-PC, tion. About 200 ft along strike from 20243- 1,031 ft above base of formation. Collected by PC and including limestone ledges higher in H. M. Duncan, E. W. Tooker, and R. A. section. Green Ravine Formation. Collected Lewandowski, July 21, 1961. from same sandstone as 20243-PC and from higher limestone beds, 26-45 ft above base of 20254-PC Garfield 7%-minute quadrangle, Tooele County. unit 6 of type section, 92 ft above base of Green Ravine-Rogers Canyon measured sec formation. Collected by H. M. Duncan, E. W. tion. North of Green Ravine near middle of Tooker, and R. A. Lewandowski, July 20, 1961. west line of SE^NW^ sec. 6, T. 2 S., P. 3 W., at 5,400-ft contour. Green Ravine Formation. 20247-PC Garfield 7 V2 -minute quadrangle, Tooele County. Collected from interbedded fissile limestone Green Ravine-Rogers Canyon measured sec and argillaceous limestone, 87 ft above base tion. Same general locality as 20246-PC at of unit 12 of type section, 1,289 ft above base 4,960-ft contour. Green Ravine Formation. of formation. Collected by H. M. F-incan, Collected from limestone about 10 ft higher E. W. Tooker, and R. A. Lewandowski, July stratigraphically than 20246-PC. Collected by 21, 1961. H. M. Duncan, E. W. Tooker, and R. A. Lewandowski, July 20, 1961. 20256-PC Garfield 7 1/2 -minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measur?d sec 20248-PC Garfield 7 V2 -minute quadrangle, Tooele County. tion. On ridge north of Green Ravine in the Green Ravine-Rogers Canyon measured sec NE^SW^NW 1! sec. 6, T. 2 S., R. 3 W., at tion. Northern part of SW^SW 1^ sec. 6, 5,320-ft contour. Green Ravine Formation. T. 2 S., R. 3 W., at 5,320-ft contour. Green Collected from argillaceous limestone, 298 ft Ravine Formation. Collected in limestone of above base of unit 11 of type section, 1,169 ft unit 11, about 20 ft above locality 20249-PC. above base of formation. H. M. Duncan, E. W. Collected by H. M. Duncan, E. W. Tooker, and Tooker, and R. A. Lewandowski, July 21, 1961. R. A. Lewandowski, July 20, 1961. 20249-PC Garfield 7%-minute quadrangle, Tooele County. 20257-PC Garfield 7%-minute quadrangle, Tooele County. Green Ravine measured section, on north edge Green Ravine-Rogers Canyon measured sec of SWHSWH sec. 6, T. 2 S., R. 3 W., ap tion. On ridge north of Green Ravine, same proximately at 5400-ft contour. Green Ravine locality as 17143-PC. Green Ravine Forma Formation. Collected from interbedded lime tion, first limestone ledge below yellowish stone, cherty limestone, and arenaceous lime shale, 258 ft above base of unit 11 of type stone, 168 ft above base of unit 11 of type sec section, 1,129 ft above base of formation. tion, 1,039 ft above base of formation. Collected H. M. Duncan, E. W. Tooker, and R. A. by M. Gordon, Jr., H. M. Duncan, E. W. Lewandowski, July 21, 1961. Tooker, and R. A. Lewandowski, July 20, 1962. 20258-PC Garfield 7%-minute quadrangle, Tooele County. 20250-PC Garfield 7%-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec South of tramway in NW^SW^SW^ sec. tion. Same locality as 20257-PC but from 6, T. 2 S., R. 3 W., at 5,480-ft contour. Green 5,240-ft contour. Green Ravine Formation. Ravine Formation. Collected in limestone of Collected from limestone, 198 ft above base of unit 11, one-half mile southeast of type sec unit 11 of type section, 1,069 ft above base of tion, about 100 ft above locality 20249-PC. formation. Collected by H. M. Duncan, E. W. Collected by H. M. Duncan, E. W. Tooker, and Tooker, and R. A. Lewandowski, July 21, 1961. R. A. Lewandowski, July 20, 1961. 20259-PC Garfield 7y2-minute quadrangle, Tooele County. 20251-PC Garfield 7 Ms-minute quadrangle, Tooele County. Green Ravine-Rogers Canyon measured sec Same locality as 20250-PC but from about 5 ft tion. Same locality as 16318-PC and 17146-PC. higher in section. Collected by H. M. Duncan, Lake Point Limestone. Orygmophylluml bed, E. W. Tooker, and R. A. Lewandowski, July unit 4 of type section. Collected by H. M. 20, 1961. Duncan, E. W. Tooker, and R. A. Lewan 20252-PC Garfield 7 Vz -minute quadrangle, Tooele County. dowski, July 21, 1961. Random collection from limestone beds in unit 20295-PC Bingham Canyon 7 ^-minute quadrangle, Tooele 11 between localities 20249-PC and 20250-PC. County. Middle Canyon measured section. On Collected by H. M. Duncan and R. A. Lewan ridge that trends southwest from 8745 peak, dowski, July 20, 1961. then curves southeastward, in NE^SW^i- 20253-PC Garfield 7 Vz -minute quadrangle, Tooele County. SE^ sec. 31, T. 3 S., R. 3 W., at 7,940 ft in Green Ravine-Rogers Canyon measured sec elevation. Clipper Ridge Member of Bingham tion. North slope of Green Ravine at 5,320-ft Mine Formation. Collected from limes^ne at contour in SW^SE^NW^ sec. 6, T. 2 S., base of unit 15, same locality as f22574. Col R. 3 W. Green Ravine Formation. Collected lected by R. J. Roberts, 1959. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A63 UflGS Colln. U8G8 Colln. No. Descriptions and collectors No. Descriptions and collectors 20299-PC Fairfield 15-minute quadrangle. Toole-Utah Settlement Canyons. On ridge roughly 3,900 Counties boundary. Measured section on ridges ft northwest of 20307-PC where crossed by at head of West Canyon. On crest of main line between R. 3 W. and R. 4 W., just above ridge approximately at 9,200 ft elevation in 8,850-ft contour line. Butterfield Peaks For SW%NE% sec. 20, T. 4 S., R. 3 W. Butter- mation. Collected from fossiliferous cherty field Peaks Formation. Collected from arena limestone, 165 ft above base of unit 26 of type ceous limestone, 431 ft above base of unit 4 section, 5,419 ft above base of formation. of type section, 1,327 ft above base of forma Collected by R. J. Roberts and E. W. Tooker, tion. Collected by R. J. Roberts and E. W. 1959. Tooker, 1959. 20311-PC Lark 7%-minute quadrangle, Salt Lake County. 20302-PC Fairfield 15-minute quadrangle, Tooele-Utah On nose on northwest slope of Copper Gulch, Counties boundary. Measured section on 6,400 ft due west of Lark, in SE%SE% sec. ridges at head of West Canyon. Along crest 25, T. 3 S., R. 3 W. Same locality and horizon roughly 800 ft west of 20299-PC approxi as 18892-PC. Bingham Mine Formation, Col mately at 9,600-ft contour. Butterfield Peaks lected by R. J. Roberts, 1959. Formation. Collected from limestone, 287 ft 20315-PC Stockton 15-minute quadrangle, Tooele County. above base of unit 5 of type section, 1,813 ft Soldier Canyon measured section. Same ridge above base of formation. Collected by R. J. as that of 17168-PC but near 7,200-ft con Roberts and E. W. Tooker, 1959. tour, SE%NE% sec. 34, T. 4 S., R. 4 W., 20303-PC Fairfield 15-minute quadrangle, Tooele-Utah Butterfield Peaks Formation. Collected from Counties boundary. Measured section on medium-light-gray limestone, 241 ft above ridges at head of West Canyon. Along crest base of unit 3 of reference section, 5 8 Colln. V8G8 Colln. No. Descriptions and collectors No. Descriptions and collectors 1,466 ft above base of formation. Collected by West Canyon Limestone. Collected from argil R. J. Roberts and E. W. Tooker, July 1957. laceous and arenaceous limestone near base 20321-PC Stockton 15-minute quadrangle, Tooele County. of unit 5 of reference section, 438 ft above Soldier Canyon measured section, SW^SW 1^ base of formation. Collected by E. W. Tooker sec. 26, T. 4 S., R. 4 W., at approximately and R. J. Roberts, July 25, 1957. 8,500-ft contour. Butterfield Peaks Formation. 20331-PC Fairfield 15-minute quadrangle, Utah County. Collected from medium-dark-gray arenaceous West Canyon measured section. On same ridge limestone, 101 ft above base of unit 10 of as 20329-PC, in SE^SE^SW 1^ sec. 22, reference section, 2,300 ft above base of for T. 4 S., R. 3 W., approximately at 7,350-ft mation. Collected by R. J. Roberts and E. W. contour. West Canyon Limestone. CoUected Tooker, July 1957. from limestone, 40 ft above base of unit 12 of reference section, 1,173 ft above base of 20322-PC Stockton 15-minute quadrangle, Tooele County. formation. Collected by R. J. Robert^ and Soldier Canyon measured section, approxi mately at 8,600-ft contour. Butterfleld Peaks E. W. Tooker, July 25, 1957. Formation. Collected from interbedded bio- 20332-PC Fairfield 15-minute quadrangle, Utah County. clastic and argillaceous limestone, 319 ft West Canyon measured section. On same ridge above base of unit 11 of reference section, as 20329-PC, just below 7,500-ft contour. 2,813 ft above base of formation. Collected Butterfield Peaks Formation. Collected in by R. J. Roberts and E. W. Tooker, July 1957. limestone, approximately 150 ft above base of unit 3 of reference section, 436 ft abov? base 20323-PC Stockton 15-minute quadrangle, Tooele County. of formation. Collected by R. J. Roberts and Soldier Canyon measured section, approxi E. W. Tooker, July 25, 1957. mately at 8,850-ft contour. Butterfield Peaks Formation. Collected from interbedded medi 20333-PC Fairfield 15-minute quadrangle, Utah County. um-gray limestone, cherty limestone, and bio- West Canyon measured section. Same ridge clastic limestone, 611 ft above base of unit 11 as 20329-PC, in NW%SW%SE% se~. 22, of reference section, 3,105 ft above base of T. 4 S., R. 3 W., approximately on 7,650-ft formation. Collected by R. J. Roberts and contour. Butterfield Peaks Formation, Col E. W. Tooker, July 1957. lected in limestone, approximately 316 ft above base of unit 3 of reference section, 752 ft 20324-PC Stockton 15-minute quadrangle, Tooele County. above base of formation. Collected by R. J. Soldier Canyon measured section, approxi Roberts and E. W. Tooker, July 25, 1957. mately at 8,900-ft contour. Butterfield Peaks Formation. Collected from thin-bedded dark- 21128-PC Garfield 7%-minute quadrangle, Tooele County. gray cherty and argillaceous limestone, 330 Green Ravine-Rogers Canyon measured sec ft above base of unit 13 of reference section, tion. Just above jeep road south of aerial 3,553 ft above base of formation. Collected by tramway on slope about 20 ft below Provo R. J. Roberts and E. W. Tooker, July 1957. level (about 4,800-ft contour), in NE%SE% sec. 1, T. 2 S., R. 4 W. Green Ravine Forma 20325-PC Stockton 15-minute quadrangle, Tooele County. tion. Collected from light-buff-gray argilla Soldier Canyon measured section, SW^SWH ceous limestone, 4 ft thick, top of which is sec. 26, T. 4 S., R. 4 W., approximately at 13 ft stratigraphically below base of bed of 8,950-ft contour. Butterfield Peaks Formation. 20243-PC. Collected by M. Gordon, Jr., H. M. Collected from medium-dark-gray arenaceous Duncan, E. W. Tooker, and R. A. Lewan- cherty limestone, 404 ft above base of unit dowski, September 8, 1962. 13 of reference section, 3,627 ft above base of formation. Collected by R. J. Roberts and 21129-PC Garfield 7 V2 -minute quadrangle, Tooele County. E. W. Tooker, July 1957. Green Ravine-Rogers Canyon measured sec tion. Same locality and approximately same 20329-PC Fairfield 15-minute quadrangle, Utah County. stratigraphic interval as 20246-PC. Col West Canyon measured section. Ridge on lected by M. Gordon, Jr., H. M. Duncan, E. W. north slope of West Canyon at Maple Flat, Tooker, and R. A. Lewandowski, September 8, in the SE^NW^ sec. 27, T. 4 S., R. 3 W., 1962. between 6,800- and 6,850-ft contours. West Garfield 7 V2 -minute quadrangle, Tooele County. Canyon Limestone. Fossils weathering from 21130-PC Green Ravine-Rogers Canyon measured sec several feet of argillaceous limestone, begin tion. Summit of ridge north of Green Favine, ning 60 ft above base of unit 2 of reference about one-eighth mile east of 5244 knoll; same section, 142 ft above base of formation. Col general locality as 20258-PC. Green Ravine lected by R. J. Roberts and E. W. Tooker, July 25, 1957. Formation. Collected from 8 ft of darV-gray shaly limestone immediately underlying base 20330-PC Fairfield 15-minute quadrangle, Utah County. of bed of 20258-PC. Collected by M. Gordon, West Canyon measured section. Same ridge as Jr., and R. A. Lewandowski, September 8, 20329-PC, approximately at 7,050-ft contour. 1962. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A6<5 t'KGf! ColJn. U8O8 Colln. No. DcMcriptions and collectors No. Descriptions and collectors 21131-PC Garfield 7%-minute quadrangle, Tooele County. loose block on slope, 12 ft stratigraphically Green Ravine-Rogers Canyon measured sec lower and believed to be approximately in tion. Same locality and bed as 20257-PC. place. Collected by M. Gordon, Jr., September Green Ravine Formation. Collected from 15 ft 8, 1962. of massive dark-gray limestone underlying 21139-PC Garfield 7 V2 -minute quadrangle, Tooele County. shaly limestone, in unit 11 of type section. Green Ravine-Rogers Canyon measured sec Collected by M. Gordon, Jr., H. M. Duncan, tion. From lower part of cliff-forming lime E. W. Tooker, and R. A. Lewandowski, Sep stone bed in the NW%NW%NW% sec. 6, tember 8, 1962. T. 2 S., R. 3 W., one-fourth mile northwest 21132-PC Garfield 7%-minute quadrangle, Tooele County. of line of type section, approximately at 5,200- Green Ravine-Rogers Canyon measured sec ft contour. Lake Point Limestone. Collected tion. Along trail about 50 ft above bottom of from massive impure limestone; interval in first ravine north of Green Ravine, on its type section lies in unit 2, 69-76 ft belo^v south slope, in the NW%SE%NWU sec. 6, base of unit 4. Collected by M. Gordon, Jr., T. 2 S., R. 3 W. Approximately same locality H. M. Duncan, E. W. Tooker, and R. A. and stratigraphic interval as 17144-PC. Green Lewandowski, September 9, 1962. Ravine Formation. Collected through 10 ft of 21140-PC Garfield 7 Ms-minute quadrangle, Tooele Countj. dark-gray silty limestone exhibiting fracture Green Ravine-Rogers Canyon measured sec cleavage, in unit 12 of type section. Collected tion. About 300 yards upslope from 21139-PD by M. Gordon, Jr., H. M. Duncan, E. W. in the NE&NW%NW% sec. 6, T. 2 S., R. 3 Tooker, and R. A. Lewandowski, September 8, W., at about 5,400 ft elevation. Same locality 1962. as 16318-PC and 17146-PC. Lake Point Lime stone. Brachiopod-bearing gray limestone, 21134-PC Garfield 7%-minute quadrangle, Tooele County. base of which is 24 ft stratigraphically above Green Ravine-Rogers Canyon measured sec top of cliff-forming limestone (unit 2) ard tion. Near base of south slope of 6231 hill. 24 ft below base of Orygmophylluml bed Same locality as 17145-PC (marked by cairn). (unit 4). Collected by M. Gordon, Jr., H. M. Lake Point Limestone. From dark-gray silty Duncan, E. W. Tooker, and R. A. Lewan limestone, 147 150 ft above base of unit 1 of dowski, September 9, 1962. type section. Collected by M. Gordon, Jr., H. M. Duncan, E. W. Tooker, and R. A. Lewan 21141-PC Garfield 7%-minute quadrangle, Tooele County. dowski, September 8, 1962. Green Ravine-Rogers Canyon measured sec tion. On ridge trending southwest from sum 21135-PC Garfield 7^-minute quadrangle, Tooele County. mit of 6231 hill. Same locality as 21140-PC. Green Ravine-Rogers Canyon measured sec Lake Point Limestone. Fossils from upper ?0 tion. Same locality as 17145-PC but 10-15 ft ft of cliff-forming limestone (unit 2 of type stratigraphically higher. Lake Point Lime section), top of which is 48 ft stratigrapti- stone. Collected from 5-ft crinoidal limestone cally below base of Orygmophyllumt bed with silicified Rhipidomella, 154-159 ft above (unit 4). Collected by M. Gordon, Jr., E. V^. base of unit 1 of type section. Collected by Tooker, and R. A. Lewandowski, September M. Gordon, Jr., H. M. Duncan, E. W. Tooker, 9, 1962. and R. A. Lewandowski, September 9, 1962. 21151-PC Lark 7^-minute quadrangle, Salt Lake County. 21136-PC Garfield 7%-minute quadrangle, Tooele County. Fossiliferous limestone exposed on south side Green Ravine-Rogers Canyon measured sec of hill at north side of Copper Gulch alor UBG8 Colln. USG8 Colln. Descriptions and collectors No. Descriptions and collectors can, E. W. Tooker, and R. A. Lewandowski, approximately in NE. cor NW 1/4NV'r }i sec. 6, September 13, 1962. T. 2 S., R. 3 W., at altitude of approximately 21154-PC Fairfield 15-minute quadrangle, Utah County. 5,850 ft. Lake Point Limestone. Collected from West Canyon measured section. North slope 2-ft bed of gray argillaceous limestone, 15 ft of West Canyon due north of mouth of Maple above top of yellowish-brown-weatl ?ring bed Canyon and east of unnamed spring, in the (unit 8 of type section). Collected ty M. Gor SW%NE%NW& sec. 27, T. 4 S., R. 3 W. don, Jr., and K. R. Moore, August 22, 1969. West Canyon Limestone. Weathered out fos 23855-PC Garfield 7%-minute quadrangle, Tooe1*? County. sils from lowest covered outcrop on slope, 1 GO- Green Ravine-Rogers Canyon measured sec 150 ft above canyon floor. Same locality and tion. Southwest-trending ridge of 6231 hill approximately same interval as 20329-PC. approximately at line between T. 1 S. and Collected by M. Gordon, Jr., H. M. Duncan, T. 2 S. Lake Point Limestone. Collected from E. W. Tooker, and R. A. Lewandowski, Sep 2-ft bed of argillaceous limestone, ton of which tember 14, 1962. is 100 ft stratigraphically below top of for 21155-PC Fairfield 15-minute quadrangle, Utah County. mation. Collected by M. Gordon, Jr., and K. R. West Canyon measured section. About 100 Moore, August 22, 1969. yards east of line of section in next little de 23890-PC Bingham Canyon 7%-minute quadrangle, Tooele pression on slope. West Canyon Limestone. County. Middle Canyon measured section. On Silicified bracihopods from 1-ft band in lowest south of 8745 summit, in NE%SE% sec. 31, outcrop in place, approximately in middle of T. 3 S., R. 3 W., at 8,420-ft contour. Clipper interval from which float fossils of 21154-PC Ridge Member of Bingham Mine Formation. were collected, probably in unit 2 of Tooker- Collected from fine-grained arenaceous lime Roberts section. Collected by M. Gordon, Jr., stone, 5 ft above base of unit 18 of type sec H. M. Duncan, E. W. Tooker, and R. A. Lew tion, 2,957 ft above base of member. Collected andowski, September 14, 1962. by R. J. Roberts and E. W. Tooker, October 21156-PC Fairfield 15-minute quadrangle, Utah County. 1961. West Canyon measured section. From approxi REGISTER OF LATE PALEOZOIC FUSULINID mate line of section in 2-ft bed in place, COLLECTING LOCALITIES IN TFE roughly 100 ft above base of unit 3 of type OQUIRRH MOUNTAINS, UTAH section. Collected by M. Gordon, Jr., H. M. Duncan, E. W. Tooker, and R. A. Lewandow Identification of and comments concerning fumlinids ski, September 14, 1962. by R. C. DOUGLASS 21157-PC Fairfield 15-minute quadrangle, Utah County. [Dates following Douglass' comments are of his written reports] West Canyon measured section. Fossils weath USGS Colln. ered out from slightly more than 100 ft of No. Descriptions and collectors beds in unit 4 of Tooker-Roberts section. Fos f 20479 Garfield 7 ^-minute quadrangle, Fait Lake sils consisted almost exclusively of Flexaria. County. Center of east side, SE 1^ sec. 22, Collected by M. Gordon, Jr., H. M. Duncan, T. 1 S., R. 3 W., approximately 1 mile north E. W. Tooker, and R. A. Lewandowski, Sep of type section near 4,820-ft contour. Kessler tember 14, 1962. Canyon Formation. Collected from bioclastic limestone lens in fusulinid chert bed 6 ft 22484-PC Magna 7^-minute quadrangle, Salt Lake County. above base of unit 29, 3,027 ft above base of SWHNW 1^ sec. 30, T. 1 S., R. 3 W., at 4,800- formation. Collected by R. J. Roberts, 1958. 4,820 ft elevation, on Provo Terrace, west of "limestone * * * has been recrystallized, Magna. Same as 19948-PC. Grandeur Mem destroying all but gross structures. Triti- ber of Park City Formation. Collected from cites sp. Possibly a Pseudofusulinella also basal limestone unit. Collected by R. J. Rob present, but too badly recrystallized for erts and E. W. Tooker, October 1961. positive identification. Late Pennsylvanian 22486-PC Bingham Canyon 7%-minute quadrangle, Tooele or Early Permian age is indicate!." 1959. County. Middle Canyon measured section. On f20486 Garfield 7%-minute quadrangle, Tooele County. northwest side of ravine in the SE^NW 1^ North slope Rogers Canyon, center sec. 31, sec. 6, T. 4 S., R. 3 W., at altitude 6,240 ft. T. 1 S., R. 3 W. Erda Formation. Collected Clipper Ridge Member of Bingham Mine For from limestone 101 ft above base of unit 3 of mation. Collected from thin-bedded limestone, type section, 502 ft above base of formation. 104 ft above base of unit 2 of type section. Collected by R. C. Douglass and R. J. Roberts, Collected by E. W. Tooker and R. J. Roberts, 1958. October 1961. " * * * Sample contains a few scattered 23854-PC Garfield 7%-minute quadrangle, Tooele County. specimens of Profusulinella which suggests Green Ravine-Rogers Canyon measured sec an early Atoka-early Middle Pennsylvanian tion. On southwest-trending ridge of hill 6231, age." 1961. UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A67 USG8 Colln. U8Q8 Colln. No. Descriptions and collectors No. Descriptions and collectors £21018 Garfield 7%-minute quadrangle, Salt Lake "Fragments of textularids and Triticites sp. County. West side tributary of Little Valley in a fine sand matrix. The age suggested by Wash, SW^SW^NE 1^ sec. 35, T. 1 S., the Triticites is Late Pennsylvanian, probs- R. 3 W., at 5,400-ft contour, approximately bly Missouri equivalent." 1962. % mile southeast of type section. Kessler f22574 Bingham Canyon 7 }&-minute quadrangle, Tooele Canyon Formation. Collected from poorly County. Ridge nose south north of Middl0 sorted fine-grained sandstone nearly 200 ft Canyon, SW^NE^iSE^i sec. 31, T. 3 S-, above base of unit 37, 4,409 ft above base of R. 3 W., at 7,940-ft contour south-southwest formation. Collected by R. J. Roberts, 1958. of summit 8745. Clipper Ridge Member, " * * * Clear area [in sandstone] repre Bingham Mine Formation. Collected frorr senting recrystallized fusulines. Some speci coarse bioclastic limestone at the base of unit mens showing a little residual structure. 15 of type section, 2,627 ft above base of th? Triticit.es sp. probably Upper Pennsyl- member and formation. Collected by R. J. vanian." 1959. Roberts and E. W. Tooker, 1959. f22568 Garfield 7 Vz -minute quadrangle, Tooele County, "Coarse bioclastic limestone with textularid'' Black Rock Canyon area, same locality as and Triticites sp. suggesting Late Pennsyl 20232-PC, 1 mile east-northeast of type sec vanian age, probably Missouri equivalent." tion, NE^NW^ sec. 32, T. 1 S., R. 3 W. 1962. Erda Formation. Collected from gray cherty f22576 Fairfield 15-minute quadrangle, Tooele County. limestone. Collected by E. W. Tooker, 1957. Ridge on south side of Middle Canyon about "This sample represents late Middle Penn- 1,000 ft north of 8944 Peak, NE%NE% sec. sylvanian age (Des Moines equivalent). 12, T. 4 S., R. 4 W., at 8,500-ft contour. Climacammina sp. Butterfield Peaks Formation. Collected from Bradyina sp. arenaceous limestone approximately 109 ft Fusulina sp. above base of unit 33 of type section, 6,476 ft Wedekindellinal." 1962. above base of formation. Collected by R. J. Roberts and E. W. Tooker, 1959. f22569 Garfield 7%-minute quadrangle, Tooele County. "Fine sand with textularids and abundant Big Canyon area, 1% miles south of type sec fusulinids including Fusulina sp. and Wede- tion, Vs mile west of tower 7417 on tramway, kindellina sp. The age indicated is Middle SW%NE% sec. 7, T. 2 S., R. 3 W., same Pennsylvanian, Des Moines equivalent." 1962. locality as 20232-PC. Erda Formation. Col Fairfield 15-minute quadrangle, Utah County. lected from cherty limestone. Collected by f22577 E. W. Tooker, 1957. Ridge east of White Pine Canyon, SE^NW^, sec. 20, T. 4 S., R. 3 W., at 9,200-ft contour. "This sample represents late Middle Penn- Butterfield Peaks Formation. Collected frorr sylvanian (Des Moines) age. bioclastic limestone 431 ft above base of unit Fusulina sp." 1962. 4 of type section, 1,327 ft above base of for f22570 Garfield 7%-minute quadrangle, Tooele County. mation. Location of colln. 20299-PC. Collected Type locality north side Rogers Canyon, by R. J. Roberts and E. W. Tooker, 1959. SW%NE% sec. 31, T. 1 S., R. 3 W., near "Bioclastic limestone with textularids, Fus- 6,440-ft contour. Erda Formation. Collected ulina sp. and Wedekindellina sp. similar from thin-bedded cherty limestone 11 ft above in age to f22576 above." 1962. base of unit 24, 2,488 ft above base of for f22578 Fairfield 15-minute quadrangle, Tooele-Utah mation. Collected by R. J. Roberts and E. W. County line. Ridge separating White Pine an'* Tooker, 1957. West Canyon at 9,750-ft contour, SE^NW^i "This sample represents late Middle Penn- sec. 20, T. 4 S., R. 3 W. Butterfield Peaks sylvanian (Des Moines) age. Formation. Collected from bioclastic lime Textularid stone 775 ft above base of unit 5 of type sec Fusulina sp." 1962. tion, 2,301 ft above base of formation. Co'- lected by R. J. Roberts and E. W. Tooker, f 22512 Bingham Canyon 7%-minute quadrangle, Tooele 1959. County. Ridge nose north of Middle Canyon, "Fine bioclastic limestone with Fusulinella NW%SE%SE% sec. 31, T. 3 S., R. 3 W., 8,440-ft contour southwest of summit 8745. sp. The age suggested is Middle Pennsyl Clipper Ridge Member, Bingham Mine For vania^ early Des Moines equivalent," 1962. mation. Collected from limestone at base of f22580 Fairfield 15-minute quadrangle, Tooele County. unit 18 of type section, a few tens of feet west Ridge southwest of Middle Canyon in saddle of the type section, 2,952 ft above base of south of 8944 Peak, SE%NE% sec. 12, T. 4 S., member, 2,952 ft above base of formation. R. 4 W. Butterfield Peaks Formation. Co1- Collected by R. J. Roberts, 1959. lected from bioclastic limestone layer in chert v A68 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH -S Colln. U8GS Colln. ATo. Descriptions and collectors No. Descriptions and collectors limestone 175 ft above base of unit 26 of type generic identification of this material. Com section, 5,429 ft above base of formation. parisons with the other samples from the Collected by R. J. Roberts and E. W. Tooker, area suggest closest relationship to some 1959. of the Triticites of Late Pennsylvsnian age, "Bioclastic limestone with textularids and but I certainly couldn't count on this. Early abundant Fusulina sp. of an advanced type. Pennsylvanian and Permian ager are not The age indicated is Middle Pennsylvanian, likely." 1962. late Des Moines equivalent." 1962. f22597 Bingham Canyon 7%-minute quadrangle, Tooele £22581 Fairfield 15-minute quadrangle, Tooele County. County. North side Middle Canyon, r'dge lead Same locality as f22580, about 3 ft higher in ing to Peak 8745, center west side 1 TEM sec. section. Collected by R. J. Roberts and E. W. 6, T. 4 S., R. 4 W., at 6,360-ft contour Clipper Tooker, 1959. Ridge Member, Bingham Mine Formation. Collected from arenaceous limestore in the "The lithology and fauna are similar and lower 8 ft of unit 2 of type section, 10 ft the same age is suggested." 1962. above base of member and the formation. £22582 Fairfield 15-minute quadrangle, Tooele County. Collected by R. J. Roberts and E. W. Tooker, Same locality as f22580, 20 ft higher in sec 1961. tion. Butterfield Peaks Formation. Collected "Fine sand with scattered worn Triticites from silty bioclastic limestone of type section. sp. The age suggested is Late Pennsylvan Collected by R. J. Roberts and E. W. Tooker, ian, Missouri equivalent." 1962. 1959. Bingham Canyon 7 % -minute quadrangle, Tooele "The limestone * * * contains abundant f22598 County. Same locality as £22597,- NV'%NE%, bryozoa in addition to the Fusulina sp. The sec. 6, T. 4 S., R. 3 W., at 7,760-ft contour. age suggested is still Middle Pennsylvanian, Clipper Ridge Member, Bingham Mine For late Des Moines equivalent." 1962. mation. Collected from arenaceous limestone £22583 Fairfield 15-minute quadrangle, Tooele County. about 7 ft above base of unit 6 of typ« section, Ridge southwest of Middle Canyon, 8944 Peak, 1,284 ft above base of the member and the NE%NE%, sec. 12, T. 4 S., R. 4 W. Butter- formation. Collected by E. W. Tooker and field Peaks Formation. Collected from arena R. J. Roberts, 1961. ceous limestone 12 ft above base of unit 31 of "Fine sand with abundant Triticites sp. type section, 6,048 ft above base of formation. The age suggested is Late Penrsylvania, Collected by E. W. Tooker and R. J. Roberts, Missouri equivalent." 1962. 1959. £22599 Bingham Canyon 7%-minute quadrangle, Tooele "Fine sand with Fiisulinella sp. The age County. Same locality as f22597, SW^SE^ suggested is Middle Pennsylvania." 1962. sec. 31, T. 3 S., R. 3 W., at 7,760-ft contour. £22584 Fairfield 15-minute quadrangle, Tooele County. Clipper Ridge Member, Bingham Fine For Same locality as f22583, but 33 ft higher mation. Collected from arenaceous limestone stratigraphically. Butterfield Peaks Forma 2 ft above base of unit 9 of type section, tion. Collected from fine sand of type section. 1,967 ft above base of the member and of Collected by E. W. Tooker and R. J. Roberts, the formation. Collected by R. J. Roberts and 1959. E. W. Tooker, 1961. "Fine sand with Fusulina sp. The age sug "Fine sand with fragments of Triticites gested is Middle Pennsylvanian, Des Moines sp. The age is probably still Missouri equivalent." 1962. equivalent." 1962. £22588 Garfield 7 *£-minute quadrangle, Salt Lake f22600 Bingham Canyon 7%-minute quadrangle, Tooele County. Nose of ridge on slope southeast of County. Ridge on north side Middle. Canyon, Kessler Canyon, west of Peak 5984, center south of Peak 8745, SW%SE% sec. 31, T. 3 SEV4 SE% sec. 27, T. 1 S., R. 3 W., approxi S., R. 3 W., at 8,000-ft contour. Clipper Ridge mately at 5,720-ft contour. Kessler Canyon Member, Bingham Mine Formation. Collected Formation. Collected from arenaceous lime from 2-ft-thick coarse bioclastic limestone stone 92 ft above base of unit 21 of type sec 309 ft above base of unit 11 of typ« section, tion, 2,221 ft above base of formation. Col 2,379 ft above base of member and formation.. lected by R. J. Roberts and E. W. Tooker, Collected by R. J. Roberts and E. W. Tooker, 1959. 1961. "The rock of this sample is completely al "Coarse bioclastic limestone with Bradyina tered. It looks like it may have been a fine sp., bryozoa, and Triticites sp. The age bioclastic limestone, and it apparently con suggested is still Late Pennsylvar ian, Mis tained small brachiopods and fusulinids. souri equivalent." 1962. Only the gross features of the fusulinids f22601 Bingham Canyon 7 Vz -minute quadrangle, Tooele are left, and I would not feel safe in any County. Same locality as f22600, N UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH A 69 T'flOS Colln. U8GS Colln. No. DeKcriptions and collectors No. Descriptions and collectors sec. 31, T. 3 S., R 3 W., at 8,280-ft contour. 883 ft above base of member, 3,868 ft above Clipper Ridge Member, Bingham Mine For base of formation. Collected by R. J. Roberts mation. Collected from fine-grained arena and E. W. Tooker, 1963. ceous limestone 3-5 ft above base of unit 16 "Recrystallized specimens of small fu^u- of type section, 2,772 ft above base of mem linids which resemble the Triticites of ber and formation. Collected by E. W. Tooker many of the other samples in size rnd and R. J. Roberts, 1961. shape, but which are indeterminate." 1964. "Fine sand with fragments of textularids f23105 Bingham Canyon 7%-minute quadrangle, Tocele and Triticites sp. of Late Pennsylvanian County. Clipper Ridge north of Middle Can age." 1962. yon, NE^SE^SW^ sec. 36, T. 3 S., R. 3 W., f22602 Bingham Canyon 7 Vz -minute quadrangle, Tooele at 6,280-ft contour. Markham Peak Memler, County. Same locality as f22600, NW^SE 1^ Bingham Mine Formation. Collected from sec. 31, T. 3 S., R. 3 W., at 8,300-ft contour. arenaceous limestone approximately 53 ft Clipper Ridge Member, Bingham Mine For above base of unit 11 (in reference section) mation. Collected from fine-grained arena about 1 mile west of type section, 940 ft above ceous limestone 21 ft above base of unit 16 base of member. Collected by R. J. Roberts of type section, 2,790 ft above base of member and E. W. Tooker, 1963. and formation. Collected by R. J. Roberts and "Triticites sp." 1964. E. W. Tooker, 1961. f23106 Bingham Canyon 7%-minute quadrangle, Tootle "Fine sand with Triticites sp. This sample County. Same locality as f23105 but 20 ft looks more advanced than the others along higher in section. Markham Peak Member, this line of section. If I saw it by itself, Bingham Mine Formation. Collected fr?m I would call it Virgil equivalent. It may be arenaceous limestone of unit 14. Collected by late Missouri, however." 1962. R. J. Roberts and E. W. Tooker, 1963. f 22603 Bingham Canyon 7 % -minute quadrangle, Tooele "Triticites sp." 1964. County. Same locality as f22600, NE^SE 1^ f23107 Bingham Canyon 7 % -minute quadrangle, Tootle sec. 31, T. 3 S., R. 3 W., at 8,420-ft contour. County. Same locality as f22105, but 85 ft Clipper Ridge Member, Bingham Mine For higher in section. Markham Peak Member, mation. Collected from fine-grained arena Bingham Mine Formation. Collected from ceous limestone 5 ft above base of unit 18 arenaceous limestone of unit 14 in referer^e of type section, 2,957 ft above base of mem section. Collected by R. J. Roberts and E. W. ber and formation. Collected by R. J. Roberts Tooker, 1963. and E. W. Tooker, 1961. "Triticites sp. "Fine sand with textularids and Triticites Climacammina" 1964. sp. Again, this sample has an early Virgil aspect but could be late Missouri." 1962. f23108 Bingham Canyon 7%-minute quadrangle, Tootle County. Same locality as f22105. Markham f22604 Bingham Canyon 1% -minute quadrangle, Tooele Peak Member, Bingham Mine Formation. County. Same locality as f22600, NE^SE 1^ Collected from cherty arenaceous limestone sec. 31, T. 3 S., R. 3 W., at 8,440-ft contour. 104 ft above base of unit 14 of refererce Clipper Ridge Member, Bingham Mine For section, 1 mile west of type section, 1,566 ft mation. Collected from arenaceous limestone above base of member, 4,551 ft above base of at base of unit 20 of type section, 2,980 ft formation. Collected by R. J. Roberts and above base of member and formation. Col E. W. Tooker, 1963. lected by R. J. Roberts and E. W. Tooker, "Triticites sp. abundant and well preserved. 1961. Climacammina sp." 1964. " * * * Includes some specimens of Triticites sp. [and] * * * common IKansanella sp., f23109 Bingham Canyon 7^-minute quadrangle, Tooele a form originally described from beds of County. Same locality as f23108, but 37 ft Missouri age in the midcontinent area. higher in section. Markham Peak Member, MillereUa sp. and the bryozoans are also Bingham Mine Formation. Collected from found in this sample. The range of Kan- limestone of unit 14 of reference section. Col sanella in the Basin Ranges is not yet lected by R. J. Roberts and E. W. Tooker. established." 1962. "Triticites sp." 1964. f23112 Bingham Canyon 7%-minute quadrangle, Tooele f23111 Bingham Canyon 7%-minute quadrangle, Tooele County. Ridge between Peak 8745 and 8536, County. Ridge west of Spring Canyon, north SWi/iNE^NE^ sec. 31, T. 3 S., R. 3 W., at center SE^NW^ sec. 30, T. 3 S., R. 3 V., 8,600-ft contour. Markham Peak Member, at 7,125-ft contour. Markham Peak Member, Bingham Mine Formation. Collected from Bingham Mine Formation. Collected from silty limestone of unit 10 of type section, sandy limestone 14 ft above base of unit 15 A70 GEOLOGIC STUDIES OF THE BINGHAM MINING DISTRICT, UTAH Colln. Bissell, H. J., 1936, Pennsylvanian and Lower Permian strat JVo. Descriptions and collectors igraphy of the southern Wasatch Mountains. Utah. of type section, 2,547 ft above base of member, Iowa Univ., Iowa City, M.S. thesis. 5,532 ft above base of formation. Collected by _____1959, Stratigraphy of the southern Oquirrl Moun R. J. Roberts and E. W. Tooker, 1963. tains, Upper Paleozoic succession, Pennsylvanian sys "Triticites sp. but reworked specimens." tem in Bissell, H. J., ed., Geology of the southern Oquirrh 1964. Mountains and Fivemile Pass-northern Boulter Moun tain area, Tooele and Utah Counties, Utah: Utah Geol. f22431 Bingham Canyon 7%-minute quadrangle, Tooele- Soc. Guidebook 14, p. 93-127. Salt Lake Counties. Ridge northeast of Clip per Peak separating Baltimore Gulch and _____1962, Pennsylvanian-Permian Oquirrh Basin of Bingham Canyon, immediately north of aban Utah: Brigham Young Univ. Geology Studies, v. 9, doned tramway, NE%SE%SE% sec. 28, T. 3 p. 26-49. S., R. 3 W., at 8,340-ft contour. Markham Boutwell, J. M., 1905, Economic geology of the Pmgham Peak Member, Bingham Mine Formation. Col mining district, Utah: U.S. Geol. Survey Prof. Prper 38, lected from limestone at base of unit 11 (1 p. 73-387. mile south along ridge from measured sec _____1907, Stratigraphy and structure of the Prrk City tion), approximately 1,370 ft above base of mining district, Utah: Jour. Geology, v. 15, p. 434-458. member, 4,355 ft above base of formation. Collected by E. W. Tooker and R. J. Roberts, Cheney, T. M., Swanson, R. W. Sheldon, R. P., and McKel- 1964. vey, V. E., 1959, Grandeur Member, in McKelvey, V. E., and others, The Phosphoria, Park City and Shedhorn "Triticites sp." 1966. Formations in the western phosphate field: U.S. Geol. f23432 Bingham Canyon 7%-minute quadrangle, Salt Survey Prof. Paper 313-A, p. 12-14. Lake County. Ridge east from Markham Peak, Cook, D. R., ed., 1961, Geology of the Bingham mining district center south edge SE^NW^i sec. 22, T. 3 S., and northern Oquirrh Mountains: Utah Geol. Soc. Guide R. 3 W., at about 8,000-ft contour. Markham book 16, 145 p. Peak Member, Bingham Mine Formation. Col lected from calcareous sandstone 76 ft above Crittenden, M. D., 1959, Mississippian stratigraphy of the base of unit 13 of Markham Peak (continua central Wasatch and western Uinta Mountains, Utah, in tion of the upper part) type section, 1,446 ft Wiliams, N. C., ed., Guidebook to the geology of the above base of member, 4,431 ft above base of Wasatch and Uinta Mountains transition area: Inter- formation. Collected by E. W. Tooker and mountain Assoc. Petroleum Geologists Guidebook, 19th W. J. Moore, 1964. Ann. Field Conf., 1959, p. 63-74. "Triticites sp. _____1961, Magnitude of thrust faulting in northern Utah, Pseudofusulinella sp." 1966. in Geological Survey research, 1961: U.S. Geol. Survey f23433 Bingham Canyon 7 Ms-minute quadrangle, Salt Prof. Paper 424-D, p. D128-D131. Lake County. Same locality as f23432, at Dott, R. H., Jr., 1955, Pennsylvanian stratigraphy of Elko about 8,080-ft contour. Markham Peak Mem and northern Diamond Ranges, northeastern Nevada: ber, Bingham Mine Formation. Collected from Am. Assoc. Petroleum Geologists Bull., v. 39, no. 11, calcareous sandstone 224 ft above base of p. 2211-2305, 19 figs., 5 tables. unit 13 in Markham Peak type section, 1,594 ft above base of member, 4,579 ft above base Drewes, Harald, 1967, Geology of the Conners Pass quad of formation. Collected by E. W. Tooker and rangle, Schell Creek Range, east-central Nevada: U.S. W. J. Moore, 1964. Geol. Survey Prof. Paper 557, 93 p., 3 pis., 14 figs., 16 tables. "The fusulinids are recrystallized, obliterat ing almost all structure. They appear to Dutro, J. T., and Sando, W. J., 1963, New Mississiprian for represent a large Triticites suggestive of a mations and faunal zones in the Chesterfield Range, Virgil age." 1966. Portneuf quadrangle, southeast Idaho: Am. Afsoc. Pe troleum Geologists Bull., v. 47, no. 11, p. 19^-1986, REFERENCES 6 figs. American Commission on Stratigraphic Nomenclature, 1961, Furnish, W. M., and Knapp, W. D., 1966, Lower Pennsyl Code of stratigraphic nomenclature: Am. Assoc. Pe vanian fauna from Kentucky Part 1, Ammonou's: Jour. troleum Geologists Bull., v. 45, no. 5, p. 645-665. Paleontology, v. 40, no. 2, p. 296-308, pi. 35, 5 figs. Baker, A. A. 1947, Stratigraphy of the Wasatch Mountains Gilluly, James, 1932, Geology and ore deposits of th« Stock- in the vicinity of Provo, Utah: U.S. Geol. Survey Prelim. ton and Fairfield quadrangles, Utah: U.S. Geol, Survey Inv. Oil and Gas Chart 30, scale approx. 1 in. to 5 miles. Prof. Paper 173, 171 p. Baker, A. A., Huddle, J. W., and Kinney, D. M., 1949, Gordon, Mackenzie, Jr., 1970, Carlinia, a Late Mississippian Paleozoic geology of north and west sides of Uinta genus of Productidae from the western Unitec1 States, Basin, Utah: Am. Assoc. Petroleum Geologists Bull., in Paleozoic Precepts; Smithsonian Contributions to v. 33, no. 7, p. 1161-1197. Paleobiqlogy, no. 2 (in press). UPPER PALEOZOIC ROCKS IN THE OQUIRRH MOUNTAINS AND BINGHAM MINING DISTRICT, UTAH ATI Hewitt, W. P., 1966, Pennsylvanian and Permian basins in Roberts, R. J., 1964 [1965], Stratigraphy and structure of northwestern Utah, northeastern Nevada, and south the Antler Peak quadrangle, Humboldt and Lan INDEX [Italic page numbers indicate major references] Page Page Page Bingham Mine Formation Continued Cleiothyrdina __ A41, 42, 47 Clipper Ridge Member, Oquirrh orbicularis ______44, 45, 46, 51, 54 Arnnthocladia sp ______A54 Group ______A23, 33,50, 53,55 siiblameUosa _____ 43 Aranthopecten sp ______47 Markham Peak Member, Oquirrh sp. A ___ 40 Adobe Rook ______14 Group ______23, 33, 35, 50, 53, 55 sp ______40,42,52 Age. Bingham Mine Formation ____ _ 55 Bingham mining district ___ 4, 6, 7, 9, 33 Climacammina _ _ 69 Bingham Mine Formation, Clipper Bingham Quartzlte ______--- 6 sp ______53, 6T, 69 Ridge Member ______35, 53 Butterfleld Limestone member _ 6, 7 Clinker Formation _ 9 Markham Peak Member, __ 38, 54 Commercial Limestone member 6 Clipper Peak ______- 38 Bimerfilcl Peaks Highland Boy Limestone member 6 Clipper Ridge ______33 Formation ______8.'!, 51, 53 Jordan Limestone member ______6 Clipper Ridge Member, ('(tninia Zone ______42 Lenox Limestone member 6 Bingham Mine Formation, Krela Formation ______-48 Petro Limestone lentil ______6 Oquirrh Group ____ 23, 33, 50, 53, 55 Green Ravine Formation _____ /,2 Phoenix Limestone lentil __ _ __ 6 (*oeloconiis sp ______54 Kessler Canyon Formation ____ 48, 49 Tilden Limestone lentil __ _ _ 6 Colpites sp ______- 43 Lake Point Limestone ______14, ^5 Tampa Limestone member _ _ 6 Commercial Limestone .member, Park City Formation, Grandeur Bingham sequence _ _ __ _ 4, 7, 9, 11, Bingham Quartzite _ _ 6 Member, ______49 14, 18,21, 23,42, 45, 49, 50 Commercial marker bed , 33 West Canyon Limestone ____ 27, 50 Bingham stock ______4 Composita ______59 Ameiira sp ______^___ 47,52 Bird Spring Formation ______55 elongata ______52 Amplerizaplirentiii sp ______40, 41, 43,51 Black Rock Canyon ______9,18,48 orata ______46, 52 Amplextm sp ______46,51 Bloyd Formation, Trace Creek Shale subtilita ______47,48,49,52 Amsden Formation ______41, 42 Member ______46 sp ______41,43,44,45 51 Anomplinlux sp ______41 Borestux sp ______41 Confusion Range __ 21, 42, 44, 45, 48, 48, 55 Antliracospirifer ______-______45 Bradiiina sp ______53, 54, 67, 68 Conger Mountain ______42 occiiluus ______44, 45, 46, 51, 52 Breathitt Formation, Kendrick Shale Conical Hill ______57 opimu* ______45,46,47,52 Member ______46 Conocardium sp 54 rocTtjimontanus ____ _,____ 44, 47, 51 Butterfleld Formation, Oquirrh Coon Canyon ______---__- --- 21 sp ______40, 43 Group ______7, 27 ' Coon Canyon syncline 21 Antiqualonia ______41,42,45,48 Butterfleld Limestone member, Coon Peak ______14, 18, 21 coloradoensis ______25, 44, 47, 51 Bingham Quartzite ______6, 7 Copper Gulch ______-_- ____ 54 pernofloKa ______40, 41 Butterfleld Peaks ______27 Correlation, Bingham Mine Formation _ 55 sp _____ 47, 53, 54 Butterfleld Peaks Formation, Butterfield Peaks Antler erogenic belt ______57 Oquirrh Group ______7, 23, 24, 27, 50 Formation ______51, 52, 53 Antler Peak, Nev ______57 Biiftonia sp ______40 Caninia Zone ______42 Antler Peak Limestone ______57 Brda Formation ______18. 48 Archimedes ______14,42,43 C Green Ravine Formation . 4% A returns Formation ______9, 50 CancrineUa sp ______47,49, 54 Kessler Canyon Formation _ 21, 48 49 Arrow Canyon Range ______55 C'aninia ______10,33,37,40,41, 42 Lake Point Limestone 14. 45 Arthur fault ______19 excentricn ______40, 41 Mississippian-Pennsylvanian Ascopora sp. A ______46 tieradcnsis ______40, 41 boundary 44 sp. B ______46,48 sp ______43,46, 52 Oquirrh Group 38 sp ______,______52 Caninia Zone ______11,40,41, 42 Park City Formation, Axtartella subquadrata ______49 Carbon Ridge Formation ______55, 57 Grandeur Member 49, 50 sp ______,_ 54 Carlin Canyon ______57 West Canyon Limestone ..______50 Atoka Formation ______46 f'arlinin ______44 Coyote syncline ___ 14. 18 Aulopora sp ______40,41 (liabolicrt ______42, 43 Crurithijris planiconvexa _ 47, 48 54 Ariculopecten sp ______41,49 pfiiUipai ______42, 43 sp ______40,43 Cedar Fort Member, Curry Formation ____ 9, 35 B Oquirrh Formation ______7 Curry Peak sequence _ 3, 4, 9 Chaetetes 4. ______18,31,47, 51 Cllpricardella gp ___ - 41 Babj/lonite* ______49 sp __ i.i ______46, 52 Cypricardinia, sp _____ .___ 49, 51 sp ______49 Chainman Shale ______42 Cyrtorostra sp _ _ 49 Rarboitria sp ______45 Cliainodictyon ______; ______52 Cystodlctya ______<-_, __ 41, 51 Bates Canyon ______H, 14 sp ______, 52 Jineatn ______41 Bates syncline ______,___ 14, 18 CliaeicUa ______-_j._ 54 sp. A ______-__- 40 Battle Conglomerate ______57 sp ______4'8, 54 sp. B ______, 40 Rai/lea sp ______41, 43, 54 Charleston-Nebo thrust plate u_ 2 ReecJieria boridens ______,44,49,52 Chesterfield Range, Idaho ______- 42 D sp ______41,43 Cfionetinella ______48 Relleroplton sp ______43 nlata ______46,47, 54 crassa ______46 Big Canyon ______45, 48 si> ______53 sp ______45, 48, 49,52^54 Bingham Canyon ______9 CladocJioniin sp ______54 nesmoinesia _ __.______48 Bingham Mine Formation, Oquirrh Clrtdodtis sp ______41 ingrata ____±._ ___ - '__ _^_i 46 Group ______7, 9, 23, 33, 35, 50, 53 Clark County, Nev. ______55 muricatina ______17, 47, 48, 51, 52 A74 INDEX Page Page Page Diamond Creek Formation A9, 57 6 Diamond Creek Sandstone 9, 38 Diamond Peak ___ 57 Garfleld fault ______A18, 22 Laeridentalium sp _ A43 Diamond Peak Formation ____ 57 Geologic setting _____ 2 Lake Point __ _ 11, 14 Diaphragmiis ______- ___- 42 Glabrocing ulum sp ____ 49 Lake Point Limestone, Oquirrh cestriensis __ - 40,42 Gold Hill region, Utah ______55 Group _____ 9, 10, 11, 16, 26, 39, 42, 50 n. sp ___ 44 Goniasma sp ______47 Lake Point Ridge ____ 11, 14 Diploporaria ______52 Gosseletina sp ______41 Lake Point thrust fault ______14 sp ______46, 52 Grandaitrispina sp ______49 Lark ______38,53,54,55 Ditomopyge sp 54 Grandeur Member, Last Chance stock 4 Donaldina sp ______49 Park City Formation __ 9,10.27,40,49 Left Hand Fork of Middle Cannon ___ 27 Doughnut Formation ______11, 14, 42 Granite Mountain, Utah ______42 Lelorltynchuis carboniferum ______40 Douglass, R. C., Great Basin _____ 2, 7, 42, 44, 47, 55, 57 Lenox Limestone member, fusulinid identifications ______66 Great Blue Limestone ______6, 11, 42 Bingham Quartzite ______6 Dry Canyon ______35 Long Trail Shale Member ______42 Lept-agonia sp ______40 Dyoros sp ______49 Paymaster Member ______42 Lewiston Peak ______,____ 7, 23, 24 Green Ravine ______10, 14 Lewiston Peak Member, B Green Ravine Formation __ 9, 10, 11, .39, 40 Oquirrh Formation ______7 Limipecten sp ______51 East Tintic Mountains ______38, 42 H Lincoln County. Nev. ______55 Echinaria sp ______47 Li no pro duct us ______45, 59 Echinoconchus ______45 nodosus ______45,46,50,51 rodeoensis ______40 Hall Canyon Member, Oquirrh Formation ______7 prattenianus ______47, 52 sp. A ______51 sp. A ______44, 51 sp ______44 HedereUa sp ______45, 51, 52 Heteralosia sp ______40, 49 sp. B ______44 ElliotteUa ______50 sp ______46,48,52,53,54 Highland Boy Limestone member, sp. A ______51 LiosoteUa ______49 Bingham Quartzite ___ 6 Ely Limestone ______9, 44, 45, 55, 57 sp. A ______49 Ely mining district ______55 Hitatedia mormoni ______47, 54 sp ______40,44,49,51 Lissoclionetes sp ______49 EnaUopora sp ______43 Lithology, Bingham Mine Formation, EoUssochonetes sp ______46, 52 Hystriculina ______48 sp ______46 Clipper Ridge Member _____ 33 Eotrochtis sp ______43 Bingham Mine Formation, Erda Formation, Markham Peak Member ___ 35 Oquirrh Group _____ 9, 11, H, 33, 39, Butterfield Peaks Formation ___ 28 46, 49, 50,51,52, 53 Ichthyorachi* ______48 Erda Formation ______14, 16 Erldopora sp ______43 sp ______40,47,52 Green Ravine Formation ___ _ 10 Euphemites n. sp ______49 Inflatia ______42 Lake Point Limestone ______11, 12 sp ______43, 47, 54 sp. A ______42, 43 Kessler Canyon Formation __ 18, 19 Eureka mining district, Nev ______55 sp. B ______42,43 Park City Formation, n. sp ______44 Grandeur member ______22 F sp ______40, 47 West Canyon Limestone ______24 Fenestella ______41 Introduction ______1 Lithophagus sp ______41 austini archimediformis ______54 Litltoxtrotion ______36 serratula ______46 8telcki ______40, 41 (Cervella) cruciformis ______54 Little Valley ______21 (Polyporella) sp ______54 Jordan Limestone member, Little Valley syncline ______21 sp 40, 43, 46, 51, 52, 53 Bingham Quartzite ______6 Little Valley Wash ______18 Ferguson Springs Formation ______55 Jordan marker bed ______7, 27, 33 Long Ridge anticline ______23, 27, 33 Ferguson Springs Mountain, Nev ____ 55 Juresania ______47 Long Trail Shale Member, Fistulipora sp ______51 sp ______44, 52 Grout Blue Limestone ______42 Fleataria ______45, 66 LophophyUidium. sp _ 43 sp. A ______42, 43, 50 sp. B ______44, 51 K M sp ______40,42, 45, 47,52 Fossils, Big Canyon ______45 K zone, Monroe Canyon Limestone ___ 42 Bingham Mine Formation, Kaibab Limestone ______49 Magoffln Beds ______46 Clipper Ridge Member ____ 35, 53 KanttaneUa ______69 Manning Canyon ______23 Markham Peak sp ______53, 69 Manning Canyon Shale _ 7, 9, 11, 14, 23, Member _____ 36, 38, 53, 54 Keiidrick Shale Member, 27, 42, 45, 50 Butterfleld Peaks Breathitt Formation __ 46 Maple Formation, Oquirrb Grcup __ 7,27 Formation ______33, 51, 52, 53 Kessler anticline ______10, 11, 14, IS Markham Peak ______35, 38 Caninia Zone ______41 Kessler Canyon ______9, IS. 54 M;irkham Peak Member, Confusion Range ______21 Kessler Canyon Formation, Bingham Mine Formation, Erda Formation ___ 16, IS, 46, 47, 48 Oquirrh Group ___ 9, 11, 14, 18 22, 38. Oqtiirrh Group ___ 23, 33, S5, 50, 53, 55 Kessler Canyon Formation _ 21, 48, 49 39, 47, 50, 54, 55 Martinia sp ___ _ 40 Lake Point Limestone ______13, 14 Kessler Peak ______10, 11, 14 Matlieropora _ 52 Park City Formation, Kirkman Formation ___ 9 sp ______52 Grandeur member ______23, 49 Kirkman Limestone ___ 9 Mendmv Canyon Member, post-CflM/Hi'a Zone ______42 Knightites (Retispira) sp _____ 43, 54 Oquirrh Formation _ 7 preservation ______39 Kochiproductus ___ 48, 54 Meekella striatocostata ______46 West Canyon Limestone ___ 26, 50 peruvianmt ______48,49,54 Meekospira sp ______43, 49, 54 Fourmile Canyon ______23 Kozlowftkia ______51 Megafaunal collecting localities 57 Fusulina ______48, 52 haydenensis _____ 46, 47, 48, 51, 52, 53 Megafossils, Bingham Mine Fcrmation, sp ______48, 51, 52, 67, 68 splendens __ 54 Clipper Ridge Member 35, 53 FusulineUa ______47, 51 sp ______47 Butterfield Peaks Formation __ 51, 52 sp ______52, 67, 68 Krotoria wallaciana _____ 49 Erda Formation ___ __ 46, 47, 48 Fusulinid collecting localities ______66 sp _____ 54 Kessler Canyon Formatter 48 INDEX A 75 Page Page Mcgafossils Continued Oquirrah Group Continued Pseudofusulinella ______A66 Park City Formation, Bingham Mine Formation Continued Sp ______38 70 Grandeur Member _ A49 Markham Peak Member __ A23, 33, Pseiidosdiwagerina ______38 West Canyon Limestone _ 51 35, 50, 53, 55 Psilocamara sp 40 Megousia ______49 biostratigraphy ______38 Ptylopora sp ___ 54 sp. A ______49 Butterfleld Formation ______7, 27 Pugnoides quinqueplecis ______44,51 Mercur mining district _ 5, 6 Butterfleld Peaks Formation __ 7, 23, Punctosplrifer TcentucUensis ______47,48 Mesolobus ______48 24, 27, 50 transversus ____ 40, 44. 45 eiiampygus ______47 Erda Formation ___ 9, 11, Ik, 33, 39, sp ______44, 54 Michelinia sp ______54 46, 49, 50, 51, 52, 53 Microfossils, Bingham Mine Formation, Kessler Canyon Formation _ 9, 11, 14, B Clipper Ridge Member ______35, 53 18, 22, 38, 39, £7, 50, 54, 55 Bingham Mine Formation, Lake Point Limestone __ 9,10,11,16, Ramiporalia sp ___ 4 , 54 Markham Peak Member __ 38, 53, 54 26, 39, 42, 50 Rayonnoceras excentricum ______41 Butterfleld Peaks Formation _ 51, 52 Maple Formation ______7,27 Reference section, Butterfleld Erda Formation ______46, 47, 48 West Canyon Limestone _ 7, 23, 27, Peaks Formation ___ 27, 31, 50, 51. 52 Kessler Canyon Formation ___ 48, 49 44, 45, 46, 50 Park City Formation, Midas thrust fault ____ 2, 4, 7, 9, 23, 35 White Pine Formation ______7, 27 Grandeur member 22 Middle Canyon ______27, 33 Orbiculoidea ______22 West Canyon Limestone, MiUerella ______27, 50 sp ______52 at Soldier Canyon _ 23, 24, 25, 2T, 50 sp ______53, 69 Orthonema soc.oroense ______49 at West Canyon 23, 24, 25, Mills Junction syncline ______14 Orthotetes occidentaUs _ 40 27, 50 Mount Raymond sequence __ 11, 14, 18, 21 sp ______43,51 Retaria sp ____ 4f, 54 Multitfiecopora ______41,47,51 Orygmopliylhim _____ 13, 42, 44, 45, 62, 65 Reticulariina ____ 42 n. sp ______40 sp ______43 campestris __ 40, 41, 42, 44, 45, 46 51 sp. A ______46, 52 Ovatia sp. A ______40,42, 43 sp ______54 sp. B ______46 sp. B ______40,43 Reticycloceras sp ____ 43 sp ______46 Rhabdomeson ______46", 52 Multithecopora zone ______47, 51 sp ______47, 52 RMneoderma pealeana _ 41 Myalina sp ______47, 51 Paladin sp ______43,44, 51 Paleostylus (Pseudotsygopleura) sp __ 41 sp ______43 Rhipidomella carbonaria ______48 N sp ______43 nevadensis _____ 13,14,42,43,44,45 Naticopsis (Naticopsis) sp ______54 Parallelodon politiis ___ 49 Zone ______14, 42, 45 sp ______41,43 sp _ ___ 47 RJiombocladia ______52 Neilsonia ______48 Park City Formation ______9, 21 sp ______46,47,52,53,54 sp ______41, 47 Grandeur Member 9, 10, 21, 40, £9 Rhombopora sp ______47 Nelson Peak ______11, 14 Parnell marker bed 33 Rhomboporella sp ______54 Neochonetes granulifer ______47, 48, 54 Paymaster Member, RJiombotrypella sp ______46, 47, 52 Neophricodothyris sp. A ______49 Great Blue Limestone _ 42 RJiynchopora taylori ______49 Neospirifer ______51 Penniculauris ______49 sp ______46, 47, 54 cameratus ______44, 45 bassi ______49 Riepe Spring Limestone ______55 coJoradoensis ______46, 47, 48, 51, 52 Penniretepora ______41 Road Canyon Formation ______49 sp ______47, 54 sp ______40, 46, 47, 52, 53, 54 Rocky Mountains ______42 North Oquirrh thrust fault __ 2, 3, 9, 11, Pennsylvanian, Middle Pennsylvanian Rogers Canyon S, 14 14, 18, 22 unconformity _ 21, 55 Rogers Canyon sequence _ 3, 9,26, 33 38, Nttcleospira sp ______41 Mississippian. Pennsylvanian 39, 53, 55 Nucttlopsis (Nuculanella) sp ______49 boundary 44 Round Valley Limestone ______J* 14 Pentremites n. sp _ 44 O Rugoclostus ______14, 26, 42, 4F, 50 Peruvispira ______48, 54 semistriatus ______43, 44, 4ff, 51 Occidental fault ______35 sp ______54 sp ______46,47 Omphalotrochus ______48, 54 Petro Limestone lentil, Zone ______14, 26, 42, 4F, 50 obtvsispira ______54 Bingham Quartzite 6 Ruaosochonetes ______42 wolfcampensis ______48, 54, 55 Phoenix Limestone lentil, pseudoliratus ______43 assemblage, Bingham Mine Bingham Quartzite 6 sp 40 Formation ___ 54, 55 Phricodothyris perplexa ______47, 52, 54 Kessler Canyon Platyceras sp 47 Formation ______48, 54 Pleurotomariacea sp 43 8 Ophir anticline ______23 Pole Canyon Member, Ophir Canyon ______23 Oquirrh Formation 7 Salt River Range, Wyo ______42 Ophir mining district ______4,11, 23 Pole Canyon syncline 27 Sandy Oquirrh member, Oquirrh Formation __ 2, 5, 6, 7, 9, 11, 14, Polidevcia sp _ 49 Oquirrh Formation ______7 18, 23, 50, 55 Polypora ___ 41 Schell Creek Range, Nev ______55 Cedar Fort Member ______7 andina ______54 Schizophoria resupinoides ______43 Hall Canyon Member ______7 sp ______40, 43, 46, 51, 52, 53, 54 texana ______43 Lewiston Peak Member ______7 Polyporella sp __ 43,46 sp ______40, 43, 51 Meadow Canyon Member ______7 PortlocMella sp ______41 Schuchertella ______42 Pole Canyon Member ______7 Post-Caninia Zone __ H. 40, 42 sp. A ______43 Sandy Oquirrh member 7 Pre-Caninia Zone H> 40 sp ______40 West Canyon Limestone Prismopora ______17, 31, 48, 52, 53 Schwayerina ______38 Member ______7, 23 triangulata ______-- 47, 48 Scoloconcha sp _ 43 Oquirrh Group ___ 2, 7, 9, 10, 11, 22, 23, sp __-______- - 47, 52 Septopora sp ______47, 52, 54 39, 45, 46, 50 Profusulinella ______17,47,48,51,66 Settlement Canyon ______27,38 Bingham Mine Formation _ 7, 9, 23, Profusulinella-Chaetetes faunizone 47 Slnuatina sp ______54 33, 35, 50, 53 Promarginifera n. sp 40,41 Soldier Canyon ______23, 27, 39, 4«J, 50 Clipper Ridge Member _ 23, S3, Promytilus sp ____ 41 Soldier Creek ______50 50, 53,55 Provo Canyon ______45, 50 South Mountain __ 3, 5, 7, 9, 33, 38, &*, 55 A76 INDEX Page Page Page Spirifer ______A59 Thickness Continued Type section Continued 'brazerianus ______40, 42, 43 Bingham Mine Formation Continued Butterfield Peaks Formation __ 28, Spirorbis sp ______40, 46, 54 Markham Peak Member _ A33, 35, 50,51 Rpiroscala sp __-_ ___ 41 36, 37, 38 Erda Formation ______A14, 16 Spring Canyon _ _ _ 35 Butterfield Peaks Formation __ 27, 28, Green Ravine Formation _ 10 Spring Mountain, Nev ______55 29, 30, 31, 32, 33 Kessler Canyon Formation A18, 19 Spruce Mountain, Nev ______- 55 Caninia Zone ______41 Lake Point Limestone ______11. 12 StegoeoeUa sp ______41,43 Erda Formation _____ 14, 16, 17, 18 Oquirrh Group ______9 Stenopliragmidium sp ______-__ 40 Green Ravine Formation _____10, 11 Rogers Canyon sequence 9 Sterostylus sp ______46 Kessler Canyon Formation _ 19, 20, 21 U Stockton mining district ______4 Lake Point Limestone __ 11, 12, 13, 45 Uddenitfs ______48 Straparolus (Amphiscapha) sp ______44 Park City Formation, Grandeur T'ddenites Zone ______48 Strathearn Formation 57 member, ______22,23 Stratigraphic terminology, recommended West Canyon Limestone __ 24, 25, 26 W change 5 Tilden Limestone lentil, Bingham Waagenoconcha ______48 Stratigraphy, revised Upper Paleozoic 9 Quartzite ______6 Wasatch Range ______2, 7, 9, 11, 18, 21, Streblopteria sp ___ 49 Timanodictya ______49 22, 42, 45, 50, 55 StreWotrypa sp ___ 46, 52 sp ______49 Weber Quartzite ______9, 18 Strobeus ,sp ______43 Timpanogos sequence _ 9, 14, 18, 21, 45, 55 WedekindeUina ______48, 67 Strophostylus sp ___ 43, 54 Tomera Formation ______57 sp ______52, 67 Sulcatopinna sp _ 43 Tooele Valley ______55 WellereUa sp ______- 49 Syringopora __ _ 33 Trace Creek Shale Member, Bloyd West Canyon ______7, 2?, 24, 27, 50 multattenuata ______-_ _ 53 Formation ______46 West Canyon Limestone, Oquirrh Traverse Mountains ______5 Group ______7, 23, 27, 44, 45, 46, 50 Trepospira (Trepospira) sp ______43 West Canyon Limestone Member, Triticites ______35, 38, 48, 49, 53, Oquirrh Formation ______7,23 54, 67, 68, 69, 70 White Pine Formation, Oquirrh Tabulipora ______41, 48 sp ______38, 53, 66, 67, 68, 69, 70 Group ______-___ - 7,27 sp. A ______46 Type section, Bingham Mine Wilkingia sp ______51 sp. B ______46 Formation ______33, 55 Worthenia sp ______49 sp ______40, 43, 51, 52 Bingham Mine Formation, Clipper TJiamnisQUs sp _____-______40 Ridge Member ______33, 53 Thickness, Bingham Mine Formation __ 33 Markham Peak Member __ 36, 37, Yampa Limestone member, Ringham Bingham Mine Formation. Clipper 55 Quartzite ______6 ' - Ridge Member ______33, 34, 35 Bingham sequence _ 9 York-Phoenix marker bed ______33 U.S. GOVERNMENT PRINTING OFFICE: 1970O-384-354