DOCSLIB.ORG

Notice Concerning Copyright Restrictions

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Notice Concerning Copyright Restrictions NOTICE CONCERNING COPYRIGHT RESTRICTIONS This document may contain copyrighted materials. These materials have been made available for use in research, teaching, and private study, but may not be used for any commercial purpose. Users may not otherwise copy, reproduce, retransmit, distribute, publish, commercially exploit or otherwise transfer any material. The copyright law of the United States (Title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted material. Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction. One of these specific conditions is that the photocopy or reproduction is not to be "used for any purpose other than private study, scholarship, or research." If a user makes a request for, or later uses, a photocopy or reproduction for purposes in excess of "fair use," that user may be liable for copyright infringement. This institution reserves the right to refuse to accept a copying order if, in its judgment, fulfillment of the order would involve violation of copyright law. 1 8 5 5 214 Article 122 COMPARISON OF LATE PALEOZOIC DEPOSITIONAL HISTORY OF NORTHERN NEyADA AND CENTRAL IDAHO By RALPH J. ROBERTS and M. RAY THOMASSON: Menlo Park, Calif., and Midland, Tex. Abstract.-Three major sequences of upper Paleozoic rocks CANADA have been mapped in northern Nevada: one deposited east of -·--1--7- the Antler orogenic belt, one within the belt, and one west of ZI I the belt. Recognition of comparable sequences in central 01 \ Idaho suggests similarity in depositional history of the two •.1 \ areas. el. \ 3 In 1960, sections of Paleozoic rocks in the area between Arco, Chal]is, and Hailey, Idaho (fig. 122.1), -»-f1 were visited by Roberts in company with C. P. Ross 1 \:, 2-to.' and other geologists of the U.S. Geological Survey. 1 00 / 41 Thomasson had previously studied sections of upper {) \ HAILEY 30'•- • Paleozoic rocks in central Idaho in 1956, 1957, and 1958 OREGON / OB"se•h ••ANG" •,• during fieldwork on his dissertation for the University 04/HaileF"1· ry// 0 101« of Wisconsin. 2• I DIA HO •01* The authors independently noted similarities between 4, : le upper Paleozoic rocks and tectonics of north-central ---I.-----00 Nevada, and those of central Idaho, which suggest that 1 04 4 4 / EXPLANATION the two areas have related depositional histories. 0 ef:, -***-..........7- Although rock units cannot be traced from one area to 1» 4* S East boundary the other because of the intervening volcanic rocks of 4 AvCarlinO,/ of orogenie belt the Snake River Plain, the stratigraphic succession, i f #/ Dashed where approxi- lithology, and structural histories are comparable. wherematelvconcealed;located; dottedque- Comparison of the sequences in the two areas is shown 1L 4f/'» ried where doubt036ful \/N E V /A D A C in the accompanying table and on figure 122.2. \ 521:Il \\ ROCK SEQUENCES \ In north-central Nevada, three contemporaneous \\ major sequences 2 have been described (Roberts and \\. · Las Vegas others, 1958) (fig. 122.26): (1) the Eureka-Carlin· \\ 0 F sequence, a combination of the Eureka sequence, 1 Shell Oil Co. 0 100 200 MILES \• 2 The term"sequence"is usedherein an informal senseto denoteageographically 1 discrete succession of major rock units that were deposited under related environ- mental conditions (Silber]ing and Roberts, 1962). A single name is applied to 8 FIGURE 122.1.-Index map of report area in Nevada sequence in order to avoid repeating all the formation names. In the same way, and Idaho, showing part of the Antler orogenic belt comparablesequencesinIdahoaregiveflinformalnamesoftheir own. and the Snake River Plain (stippled ·pattern). ART. 122 IN U.S. GEOL. SURVEY PROF. PAPER 475-D, PAGES Dl-D6. 1964. D1 D2 STRATIGRAPHY AND STRUCTURAL GEOLOGY Descriptions of late Pateozoic rocks in northern Nevada and central Idaho Sequence as shown in flg. 122.2 • Name, age, and thickness of formation Lithology Facies Northern Nevada Havallah Formation, Pennsyl- Upper part: Upper part: vanian and Permian, 10,000+ Calcareous sandstone, lime- Offshore 1)ut shoaling toward Havallah sequence ft stone, shale, minor con- the top. ( Roberts and others, glomerate 1958; Silberling and Lower part: Lower part: Roberts, 1962) Sandstone, shale, chert Offshore. Pumpernickel Formation, Penn- Argillite, chert, sandstone, Eugeosynclinal, mostly offshore sylvanian(?), 7,000+ ft greenstone and moderately deep water. Edna Mountain Formation, Sandstone, sliale, slialy lime- Nearshore, shallow water. Permian, 700+ ft stone Antler sequence Antler Peak Limestone, Upper Limestone, shaly and sandy Nearshore, shallow water. ( Roberts and others, Pennsylvanian and Permian, limestone 1958) 625 ft Battle Formation, Middle Penn- Conglomerate, sandstone, shale, Terrestrial to shallow-water ilia- sylvanian, 730+ ft limestone rine. Buckskin Mountain Formation, Sandstone, limestone Nearshore, shallow water. Permian, 1,200+ ft Strathearn Formation, Upper Limestone, fine conglomerate Shallow water. Pennsylvanian and Permian, 1,500+ ft Carlin sequence (AfterDott, 1955; Fails, Moleen and Toniera Formations, Liinestone, fine conglomerate, Shallow water. 1960) Lower and Middle Pennsyl- sandstone vanian, 3,200+ ft Tonka Formation, Lower Mis- Conglomerate, sandstone, shale, Offshore, foredeep, moderately sissippian to Pennsylvanian, graywacke deep water. 2,500+ ft Central Idaho Ketchum sequence Wood River Formation, Penn- Sandstone, calcareous sandstone, Mostly offshore, moderately deep (Unipleby and others, sylvanian and Permian, 8,000+ liIiiestone, cliert to shallow water. 1930; Bostwick, 1955; ft Basal conglomerate, 40-260 ft Thoniasson 1) Milligen Formation, Mississip- Argillite, siliceous argillite, cheri, Eugeosynclinal, 01Tshore, mod- pian(?), 7,000+ ft limestone, quartzite erately deep water. Congbmerate on Summit Creek, Conglomerate, sandstone, shala Sliallow water. Summit Creek sequence Upper Pennsylvanian, 1,910 ( Modified after ft Thomasson 1) Unnamed unit Shale Shallow water. Conglomerate in Muldoon area, Conglomerate, shale, sandstone, Shallow water. Lower Pennsylvaniati, 1,324 ft liniestone Muldoon Formation: Foredeep, offshore: Wildhorse Member, Upper Shale, minor conglomerate, lime- Aioderately deep water. Mississippian or Lower stone Star Hope sequence Pennsylvanian, 2,586 ft ( Modified after Thomas- Iron Mine Member, Upper Conglomerate, sandstone, silt- Do. sol) ; 1 Ross, 1960; Skipp, Mississippian, 3,650 ft stone, mudstone 1961 M Garfield Member, Upper Sandstone, siltstone, mildstone Do. Mississippian, 2,587 ft Copper Creek Member, Lower Graded graywacke, black sliale Do. Mississippian, 861 ft Unnamed shale member, Siliceous argillite, 111inor chert, Moderately deep to deep Lower Mississippian, 4,000 ft sandstone, limestone water. 1 See footnote 3, p. D#. ROBERTS AND THOMASSON D3 ANTLER OROGENIC •BELT Havallah sequence r---.r--\-Antler sequence • Carlin sequence c-7..5-1.•05353•Rplilry,epulae:les.3' /aoess THFUST• Pre-Mississippian%- ».<--1*carbonate'' ••ZE•Z•1_Z__2'assemblage - . -4 A. Northern Nevada, Mississippian through Early Pe•rmian. 1 Following the Antler orogeny, sediments of the Antler sequence were deposited near the orogenic belt and those of the Havallah and Carlin sequence farther offshore 7-FRIZ:22...&- •.:Ifi34-14/GOLCONDA THRUST )0-44/•u•,, I ......11 -• - /1 ItlitC L L---/ kr-- -,31 /n \\L,i l.v4,,4J /./'A.-.U...3::•/(9377-129/ \\i/"Ir \S•1 1 w#4- 4-,23...://li-l-':'-:• : ','. Z, - ' ' ' ' ' ' ' ..1.L.1-_r_ 1 ) < ••••S•I•OUNTAINS THRUST ..tri-•.,1..•DE.••••,6.50----,-,-'-----I--------r---<-1-,1, B. GolcondaNorthern Nevada,thrust, andLateclasticPermian.rocks wereDuringshedtheintoSo•omaeasternorogeny,Nevadathe Havallah sequence moved eastward on the Summit Creek Ketchum sequence , csequence, Star Hope sequence •,03602t»1,0•«,•i•••••1 1 1.· 1.- I. .1.· i./-- >'.r '1 .2//1,:T:.7.2::.• ...E036=E-- '.'«4•9'/7•/// , ».©g®3 - -- --=-1.., t .«'15:/f..=tc33-7<p•(*f/, 7,»,e'*' F Pre-Mississippia, / r &4.-r----r onaterocks C Central Idaho, Mississippian through Early Permian. Following the Mississippian orogeny, sediments of the quencesSummit Creekfarthersequenceoffshore were deposted near the orogeAic belt and those of the Ketchum and Star Hope se- 1««=»»»,»=1•<«111-iI•t.< L HA»«»•R«3•/7,•5•/*Flir••'••f•'6'=*-)-47:LJI•,L#-mi•** -1--1.«1- '1 '1 .1 f '1 .1' 1' 1' '' " '1•12\<2523=7 / 1 1-LS.-4,--•A-256«eR.i»i3»•»-;• ,•t .•5.'.'. '1'..1'' ' '' '.''.' :...'' \»--Ss/-»*/- D. Central Idaho, post-Early Permian. eastward on the Hailey thrust During the post-Ea•rly Permian orogeny, the Ketchum sequence moved EXPLANATION 1 ---*-LL. 5%8 1 '-- Conglomerate Shale and graywacke Limestone A-/-4 Sandstone Bedded chert Shaly limestone Shale or argillite Vol«•rlock Dolomite FIGU RE 1222.-Diagrammatic sections showing a comparisonin *ntralof lateIdaho.Paleozoic depositional history in northern Nevada with that D4 STRATIGRAPHY' AND STRUCTURAL GEOLOGY (composed of the Chainman Shale, Diamond Peak recognized only at one place, on the ridge at the head Formation, Ely Limestone, and the Carbon Ridge and of Summit Creek. They are here called the Sunimit Garclen Valley Formations, exposed in the Eureka area) Creek sequence (figs. 122.2 C and 122.3) . This sequence (fig. 122.1 ), and tile Carlin sequence exposed farther consists of about 1,900 feet of conglomerate, sandstone, north (composed of the Tonka, Moleen and Tomera, and shale of Pennsylvanian age (Thomasson 3). The Strathearn, and Buckskin Mountain Formations of basal unit,
Load more

Recommended publications
  • Preliminary Geologic Map of the Galena Canyon Quadrangle, Lander County, Nevada
    U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY To accompany the Preliminary Geologic Map of the Galena Canyon Quadrangle, Lander County, Nevada by JeffL.Doebrich1 Open-File Report 94-664 Prepared in cooperation with Santa Fe Pacific Mining Inc. under Cooperative Research and Development Agreement 9300-1-94 1994 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North America Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. !U.S. Geological Survey, Reno Field Office, MS-176, Mackay School of Mines, University of Nevada, Reno, Nevada, 89557-0047 DESCRIPTION OF MAP UNITS Qd Mine dump (Holocene) Present around active and abandoned mining operations in the Copper Canyon, Iron Canyon, an Copper Basin areas Qfp Flood plain deposits (Quaternary) Includes sand, silt, and clay deposits in the flood plain of the Reese River in the southeast corner of the quadrangle. Contacts approximately located using large-scale color aerial photographs Qaf Younger alluvium and fanglomerate deposits (Quaternary) Clay, silt, sand, and gravel primarily in active stream channels but also covering outwash fans at the mouth of major drainages emanating from the range. Contacts of outwash fans approximately located using large-scale color aerial photographs Qc Colluvium (Quaternary) Includes talus, slope wash, and other colluvial deposits Qls Landslide deposits (Quaternary) Qoa Older alluvium (Quaternary) Poorly sorted gravel deposits with a silty to sandy matrix. Includes terrace and valley-fill deposits at higher elevations; dissected by stream channels containing younger alluvium (Qaf).
    [Show full text]
  • The Hell Creek Formation, Montana: a Stratigraphic Review and Revision Based on a Sequence Stratigraphic Approach
    Review The Hell Creek Formation, Montana: A Stratigraphic Review and Revision Based on a Sequence Stratigraphic Approach Denver Fowler 1,2 1 Badlands Dinosaur Museum, Dickinson Museum Center, Dickinson, ND 58601, USA; [email protected] 2 Museum of the Rockies, Montana State University, Bozeman, MT 59717, USA Received: 12 September 2020; Accepted: 30 October 2020; Published: date Supporting Information 1. Methods: Lithofacies Descriptions Facies descriptions follow methodology laid out in Miall (1985). Descriptions mostly follow those of Flight (2004) for the Bearpaw Shale and Fox Hills Sandstone. Additional lithofacies are described for the Colgate sandstone, ?Battle Formation, an undivided Hell Creek Formation, and the lowermost 5–10 m of the Fort Union Formation. It was desirable to stay as close to Flight's (2004) definitions as possible in order to facilitate cross comparison between measured sections and interpretation; however I have also chosen to remain true to the intentions of Brown (1906) in keeping the Basal Sandstone (and associated basal scour) as the first unit of the Hell Creek Formation, rather than the tidal flats identified by Flight (2004). This analysis is not as concerned with the nature of the basal contacts as much as internal stratigraphy within the Hell Creek Formation itself, hence some of the stratal and facies relationships described by Flight (2004) were not directly observed by myself, but I have included them here to ease comparisons. 1.1. Bearpaw Shale The Bearpaw Shale is the basalmost formation considered in this study; as such only the uppermost 10–20 m have been observed in outcrop. In this upper 20 m or so, the Bearpaw Shale generally coarsens upwards, predominantly comprising shale with occasional interbedded sandstone.
    [Show full text]
  • F I N a L Mineral Assessment Report
    BLM F I N A L MINERAL ASSESSMENT REPORT Battle Mountain District Office - Nevada J A N U A R Y 2 0 1 2 This page intentionally left blank Bureau of Land Management Mineral Assessment Report SUMMARY The Bureau of Land Management (BLM) Battle Mountain District Office (BMDO) is in the process of revising the district’s Resource Management Plan (RMP). As part of the RMP revision process, the BLM is required to prepare a Mineral Assessment Report providing information regarding mineral occurrences and potential within the BMDO Planning Area (planning area). This report provides an intermediate level of detail for mineral assessment as prescribed in BLM Manual 3060 (BLM 1994). Information presented in this report will be summarized and incorporated into an Environmental Impact Statement (EIS) for the proposed RMP and into the final RMP. The geologic history of central and southern Nevada and the planning area is very complex and includes two major cycles of sedimentation (western and eastern facies sources), episodic thrust faulting, mountain building, and associated intrusive and igneous activity. More recent geologic history includes a period of crustal extension that was accompanied by bimodal (rhyolite-basalt) volcanism, large volume caldera volcanism, and basin and range block-faulting resulting in high-levels of shallow crustal heat flow. The regional and local geologic setting has been instrumental in the location of and potential for numerous economic metallic mineral deposits in the planning area, as well as development of economic geothermal resources. MINING AND MINERAL ACTIVITY IN NEVADA Mineral exploration, particularly for gold, is an ongoing enterprise in Nevada by both operators of existing mines and by other exploration companies.
    [Show full text]
  • Structural Reconstruction of Copper Basin, Battle Mountain District
    STRUCTURAL RECONSTRUCTION OF THE COPPER BASIN AREA, BATTLE MOUNTAIN DISTRICT, NEVADA by David A. Keeler A Prepublication Manuscript Submitted to the Faculty of the DEPARTMENT OF GEOSCIENCES In Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA 2010 1 Structural Reconstruction of the Copper Basin Area, Battle Mountain District, Nevada David A. Keeler* Newmont Mining Corp. P.O. Box 1657, Battle Mountain, NV 89820-1657 and Eric Seedorff Institute for Mineral Resources, Department of Geosciences University of Arizona, Tucson, AZ 85721-0077 *Corresponding author: email, [email protected] 2 Abstract The Copper Basin area of the Battle Mountain district in north-central Nevada contains a porphyry Mo-Cu deposit (Buckingham), several porphyry-related Au ± Cu deposits in skarn and silica-pyrite bodies (Labrador, Empire, Northern Lights, Surprise, Carissa), and three supergene Cu deposits (Contention, Sweet Marie, Widow). This study uses the results of field mapping, U- Pb dating of zircons from igneous rocks, and structural analysis to assess the age, original geometry, depth of emplacement, and degree of tilting and dismemberment of the Late Cretaceous and Eocene hydrothermal systems the Copper Basin area and the source of the supergene copper. The Copper Basin area consists primarily of clastic rocks of the Cambrian(?) Harmony Formation overlain unconformably by Pennsylvanian-Permian clastic and carbonate rocks of the Antler overlap sequence. On the eastern side of Copper Basin, the Antler overlap sequence is overlain by the late Eocene tuff of Cove Mine, in which the compaction foliation dips 15 to 25° east.
    [Show full text]
  • Synoptic Taxonomy of Major Fossil Groups
    APPENDIX Synoptic Taxonomy of Major Fossil Groups Important fossil taxa are listed down to the lowest practical taxonomic level; in most cases, this will be the ordinal or subordinallevel. Abbreviated stratigraphic units in parentheses (e.g., UCamb-Ree) indicate maximum range known for the group; units followed by question marks are isolated occurrences followed generally by an interval with no known representatives. Taxa with ranges to "Ree" are extant. Data are extracted principally from Harland et al. (1967), Moore et al. (1956 et seq.), Sepkoski (1982), Romer (1966), Colbert (1980), Moy-Thomas and Miles (1971), Taylor (1981), and Brasier (1980). KINGDOM MONERA Class Ciliata (cont.) Order Spirotrichia (Tintinnida) (UOrd-Rec) DIVISION CYANOPHYTA ?Class [mertae sedis Order Chitinozoa (Proterozoic?, LOrd-UDev) Class Cyanophyceae Class Actinopoda Order Chroococcales (Archean-Rec) Subclass Radiolaria Order Nostocales (Archean-Ree) Order Polycystina Order Spongiostromales (Archean-Ree) Suborder Spumellaria (MCamb-Rec) Order Stigonematales (LDev-Rec) Suborder Nasselaria (Dev-Ree) Three minor orders KINGDOM ANIMALIA KINGDOM PROTISTA PHYLUM PORIFERA PHYLUM PROTOZOA Class Hexactinellida Order Amphidiscophora (Miss-Ree) Class Rhizopodea Order Hexactinosida (MTrias-Rec) Order Foraminiferida* Order Lyssacinosida (LCamb-Rec) Suborder Allogromiina (UCamb-Ree) Order Lychniscosida (UTrias-Rec) Suborder Textulariina (LCamb-Ree) Class Demospongia Suborder Fusulinina (Ord-Perm) Order Monaxonida (MCamb-Ree) Suborder Miliolina (Sil-Ree) Order Lithistida
    [Show full text]
  • Bedrock Geology of Alberta
    Alberta Geological Survey Map 600 Legend Bedrock Geology of Alberta Southwestern Plains Southeastern Plains Central Plains Northwestern Plains Northeastern Plains NEOGENE (± PALEOGENE) NEOGENE ND DEL BONITA GRAVELS: pebble gravel with some cobbles; minor thin beds and lenses NH HAND HILLS FORMATION: gravel and sand, locally cemented into conglomerate; gravel of sand; pebbles consist primarily of quartzite and argillite with minor amounts of sandstone, composed of mainly quartzite and sandstone with minor amounts of chert, arkose, and coal; fluvial amygdaloidal basalt, and diabase; age poorly constrained; fluvial PALEOGENE PALEOGENE PALEOGENE (± NEOGENE) PALEOGENE (± NEOGENE) UPLAND GRAVEL: gravel composed of mainly white quartzite cobbles and pebbles with lesser amounts of UPLAND GRAVEL: gravel capping the Clear Hills, Halverson Ridge, and Caribou Mountains; predominantly .C CYPRESS HILLS FORMATION: gravel and sand, locally cemented to conglomerate; mainly quartzite .G .G and sandstone clasts with minor chert and quartz component; fluvial black chert pebbles; sand matrix; minor thin beds and lenses of sand; includes gravel in the Swan Hills area; white quartzite cobbles and pebbles with lesser amounts of black chert pebbles; quartzite boulders occur in the age poorly constrained; fluvial Clear Hills and Halverson Ridge gravels; sand matrix; ages poorly constrained; extents poorly defined; fluvial .PH PORCUPINE HILLS FORMATION: olive-brown mudstone interbedded with fine- to coarse-grained, .R RAVENSCRAG FORMATION: grey to buff mudstone
    [Show full text]
  • Paleozoic Tectonic Domains of Nevada: an Interpretive Discussion to Accompany the Geologic Map of Nevada
    Paleozoic tectonic domains of Nevada: An interpretive discussion to accompany the geologic map of Nevada A. Elizabeth Jones Crafford GeoLogic, 9501 Nettleton Drive, Anchorage, Alaska 99507, USA ABSTRACT contain rocks unlike those from the adjacent tectonic domains is to help characterize and dis- margin or other terranes and suggest they are tinguish groups of rocks by the distinct tectonic The Paleozoic geologic history of Nevada far traveled. A change in the plate boundary histories that have (or have not) impacted them. can be viewed in terms of tectonic domains confi guration in the Middle Pennsylvanian Traditional interpretations of Paleozoic tec- derived from the newly interpreted digi- led to the development of a new margin that tonic events in Nevada have primarily relied tal geologic map of Nevada. These domains refl ected the effects of a new plate boundary on pre-plate tectonic or early plate tectonic reveal that Paleozoic tectonic events were farther to the west. Accretion to the margin ideas of displacement of the Earth’s crust that shaped by complex interactions between the of upper Paleozoic oceanic terranes at the do not necessarily address the complexity of continental margin in Nevada and accreted close of the Paleozoic redefi ned the margin structural and stratigraphic evidence that has terranes outboard of the margin. once again as it changed from a transpres- been observed since they were fi rst proposed Ten domains are described. They include sive accretion regime to a true backarc plate (Brueckner and Snyder, 1985; Burchfi el and lower Paleozoic domains based on paleogeo- tectonic setting in the Mesozoic.
    [Show full text]
  • Geologic Names of North America Introduced in 19364955
    Geologic Names of North America Introduced in 19364955 ^GEOLOGICAL SURVEY BULLETIN 1056-A Names of North America Introduced in 1936-1955 By DRUID WILSON, WILLIAM J. SANDO? and RUDOLPH W. KOPF Prepared with the assistance of BARBARA BEDETTE, JEAN L. EGGLETON, GRACE C. KEROHER, CAROLYN MANN, WILLIAM G. MELTON, JR., KATHERINE DENNISON PALMER, and JACK E. SMEDLEY GEOLOGIC NAMES OF NORTH AMERICA -G E O L O G I C AL SURVEY BULLETIN 1056-A A compilation of new geologic names of North America, including Greenland, the finest Indies, the Pacific Island pos­ sessions of the United States, and the Trust Territory of the Pacific Islands UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1957 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director ' For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - Price $1. (paper cover) FOEEWOBD The "Lexicon of geologic names of the United States" by M. Grace Wilmarth, published in 1938 and reprinted in 1951 and 1957, met a long standing need and continuing demand for a compilation of geologic names. Plans made for future compilations as new names and revisions appeared were interrupted during the years of World War II. In 1952 a sustained effort was begun toward review of geo­ logic publications necessary to furnish a background for preparation of a new edition. After the review was brought up to date in 1956, the present compilation was prepared in order to furnish to the geo­ logic profession, as quickly as possible, some of the essential data concerning the new names that have appeared since 1935.
    [Show full text]
  • Western Interior Seaway
    () . Paleogeo.graphy of the Late Cretaceous of the Western Interior otMfddle North America+­ j?'oal .Blstribution anct,Sedimen~cumulation By Laura N. Robinson Roberts and Mark A. Kirschbaum U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1561 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1995 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director For sale by U.S. Geological Survey, Information Services Box 25286, Federal Center Denver, CO 80225 Any use of trade, product, or finn names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government Library of Congress Cataloging-in-Publication Data Roberts, Laura N. Robinson. Paleogeography of the Late Cretaceous of the western interior of middle North America : coal distribution and sediment accumulation I by Laura N. Robinson Roberts and Mark A. Kirschbaum. p. em.- (U.S. Geological Survey professional paper ; 1561) Includes bibliographical references. Supt. of Docs. no.: I 19.16: 1561 1. Paleogeography-Cretaceous. 2. Paleogeography-West (U.S.). 3. Coal­ Geology-West (U.S.). I. Kirschbaum, Mark A. II. Title. III. Series. QE50 1.4.P3R63 1995 553.2'1'0978-dc20 94-39032 CIP CONTENTS Abstract........................................................................................................................... 1" Introduction ................................................................................................................... Western Interior Seaway ... .. ... ... ... .. .. ..
    [Show full text]
  • Index to the Geologic Names of North America
    Index to the Geologic Names of North America GEOLOGICAL SURVEY BULLETIN 1056-B Index to the Geologic Names of North America By DRUID WILSON, GRACE C. KEROHER, and BLANCHE E. HANSEN GEOLOGIC NAMES OF NORTH AMERICA GEOLOGICAL SURVEY BULLETIN 10S6-B Geologic names arranged by age and by area containing type locality. Includes names in Greenland, the West Indies, the Pacific Island possessions of the United States, and the Trust Territory of the Pacific Islands UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.G. - Price 60 cents (paper cover) CONTENTS Page Major stratigraphic and time divisions in use by the U.S. Geological Survey._ iv Introduction______________________________________ 407 Acknowledgments. _--__ _______ _________________________________ 410 Bibliography________________________________________________ 410 Symbols___________________________________ 413 Geologic time and time-stratigraphic (time-rock) units________________ 415 Time terms of nongeographic origin_______________________-______ 415 Cenozoic_________________________________________________ 415 Pleistocene (glacial)______________________________________ 415 Cenozoic (marine)_______________________________________ 418 Eastern North America_______________________________ 418 Western North America__-__-_____----------__-----____ 419 Cenozoic (continental)___________________________________
    [Show full text]
  • Evolution and Diversity of Ornithomimid Dinosaurs in the Upper Cretaceous Belly River Group of Alberta
    Evolution and Diversity of Ornithomimid Dinosaurs in the Upper Cretaceous Belly River Group of Alberta by Bradley McFeeters A thesis submitted to the Faculty of Science in partial fulfillment of the requirements for the degree of Master of Science Department of Earth Sciences Carleton University Ottawa, Ontario May, 2015 © 2015 Bradley McFeeters ABSTRACT Ornithomimids (Dinosauria: Theropoda) from the Campanian (Upper Cretaceous) Belly River Group of Alberta have a fossil record that ranges from isolated elements to nearly complete articulated skeletons. The Belly River Group ornithomimids are among the best-known theropods from these deposits, as well as some of the best-known ornithomimids in the world. However, questions remain concerning the identification of the oldest definitive occurrence of these dinosaurs in Alberta, as well as the taxonomic diversity of the articulated material from the Dinosaur Park Formation. These topics have important implications for reconstructing the palaeobiogeographic and phylogenetic history of Ornithomimidae in Laramidia. The literature on all ornithomimosaurs from the Cretaceous of North America is reviewed, with special attention to their taxonomic history and geological context in the Belly River Group. The species Struthiomimus altus has historically contained most of the articulated ornithomimid material from the Belly River Group, but this is not supported by synapomorphic characters in all cases, and the material referred to S. altus is morphologically heterogeneous. An articulated partial skeleton
    [Show full text]
  • Geological Setting of Vertebrate Microfossil Localities Across the Cretaceous-Paleogene Boundary in Southwestern Saskatchewan, Canada
    Canadian Journal of Earth Sciences Geological setting of vertebrate microfossil localities across the Cretaceous-Paleogene boundary in southwestern Saskatchewan, Canada Journal: Canadian Journal of Earth Sciences Manuscript ID: cjes-2015-0038.R1 Manuscript Type: Article Date Submitted by the Author: 20-Apr-2015 Complete List of Authors: Redman, Cory; Royal Tyrrell Museum of Palaeontology, Gardner, JamesDraft D.; Royal Tyrell Museum of Palaeontology, Scott, Craig; Royal Tyrell Museum of Palaeontology, Braman, Dennis; Royal Tyrrell Museum of Palaeontology Keyword: Maastrichtian, Paleocene, microvertebrates, mammals, terrestrial https://mc06.manuscriptcentral.com/cjes-pubs Page 1 of 63 Canadian Journal of Earth Sciences Geological setting of vertebrate microfossil localities across the Cretaceous-Paleogene boundary in southwestern Saskatchewan, Canada Cory M. Redman, James D. Gardner, Craig S. Scott, and Dennis R. Braman Cory M. Redman, James D. Gardner, Craig S. Scott, and Dennis R. Braman Royal Tyrrell Museum of Palaeontology,Draft P.O. Box 7500, Drumheller AB T0J 0Y0, Canada Corresponding author: Cory M. Redman (e-mail: [email protected] ) 1 https://mc06.manuscriptcentral.com/cjes-pubs Canadian Journal of Earth Sciences Page 2 of 63 Abstract: The Frenchman and Ravenscrag formations of southwestern Saskatchewan, Canada, record an apparently continuous sequence of nonmarine clastic sediments across the Cretaceous- Paleogene (K-Pg) boundary. Extensive exposures of these fossil-rich sediments occur in the Frenchman River Valley, near the towns of Ravenscrag, Eastend, and Shaunavon, and have been a focus of study since the 1970s. Despite this long history of investigation, a comprehensive account of the geographic and stratigraphic positions of many of the significant fossil localities has yet to be published.
    [Show full text]