U.S. DEPARTMENT OF THE INTERIOR GEOLOGIC INVESTIGATIONS SERIES I–2655 U.S. GEOLOGICAL SURVEY Je B A' Qah CORRELATION OF MAP UNITS calcareous, siliceous, and iron-oxide cement; in part sandstone and reddish-brown and greenish gray siltstone Kw Tcw Kd containing medium- to large-scale, wedge-planar crossbeds. and mudstone, including characteristic very light gray to ? Qc Kscl Kw Kk Qao Kscu Thickness about 30 m in eastern part of exposure belt in greenish-gray individual gypsiferous beds as thick as 2 m. Kscu Kt Jcu Qam Kscl ? Tcl Qai Qah Qesh northeastern part of quadrangle; thins westward as the Unit forms slopes, is about 50–65 m thick (Doelling and Qbc Qah Holocene Qms Qao Qa Qc result of pre-Dakota Formation erosion; not present west of Davis, 1989, p. 35), thickens westward; lower contact is Tcl Tbh Qc Tcl Qms Kt Qay Qls Qms Table Mountain. Depositional environments: probably conformable and gradational. Depositional environments: Tbh alluvial coastal plain and eolian dune fields lower coastal plain, tidal flat, sabkha Qb Tcw Jcu Qes Qds QUATERNARY Tcw Qes Qa Qai Qb Qbc Jc Carmel Formation, undivided (Middle Jurassic)—Consists of dmm Middle red member (Lower Triassic)—Poorly resistant, Ksc ? Pleistocene four members; contacts between members appear to be slope-forming, medium-red to reddish-brown mudstone and Kw Kw Qao Qms conformable; base of formation corresponds to J–2 siltstone containing veinlets and thin seams of gypsum and Qah Qc Unconformity unconformity of Pipiringos and O’Sullivan (1978). Member lesser fine-grained and silty sandstone; gypsum increases ? Qms Qay QTa names are those of Cashion (1967). Shown undivided only upwards. Thickness about 90–110 m (Doelling and Davis, Qb Qah Pliocene(?) Jcl on cross sections 1989, p. 34). Lower contact apparently conformable. Tcw Unconformity Jcw Winsor Member—Mostly sandstone; fine to medium grained, Depositional environment: similar to upper red member Kt Qah Qa Jcl Tbh friable; includes interbedded siltstone and mudstone in lower Virgin Limestone Member (Lower Triassic)—Limestone, Jcw Kscl TERTIARY dmv ? Tcl Je lower part. Upper part in western part of quadrangle is dolomite, sandstone, shale and mudstone; dolomitic Kt Kscu Tcw Kscu Jcu Tertiary commonly light-gray to yellowish-gray sandstone, forming limestone and dolomite are mostly yellowish gray, mostly Qes steep slopes and cliffs, crossbedded; lower part is reddish micritic, in part oolitic; birdseye structure locally present; Qms Kd Tcl Tcl Kd brown to light brown, forming slopes. Member thins Qc Qc ? ledge forming. Sandstone is yellowish-gray with small-scale Qms Unconformity westward, mostly resulting from pre-Dakota erosional crossbedding. Shale, siltstone, and mudstone are brownish Kk Qay Qa Jn Qms ? Tcl bevelling, from about 100 m in northeastern part of gray, generally calcareous. Member forms low hogbacks ? Kk Kd Qms Kscl Kk Tcw Kw Jcw quadrangle to less than 60 m near western boundary. and caps low buttes; contains locally abundant pelecypods, Jcg ? Qls Kw ? Tcw Uppermost beds include about 13 m of interbedded gypsum gastropods, crinoid columnal fragments, and scarce Early Qbc ? Jcb ? ? Kw Qa and soft siltstone equivalent to the Wiggler Wash Member of Triassic ammonite Tirolites. Lower contact is apparently Tcl ? Kw Qay Kt Kscu Upper Qms ? Tcl Thompson and Stokes (1970) in extreme northeastern part gradational. Member is about 4–10 m thick (Doelling and ? ? ? Ksc Cretaceous CRETACEOUS Kw ? Qms Qa Kscl of quadrangle. Depositional environments: lower coastal Davis, 1989, p. 34), thickening westward. Virgin Qls Qb Qc Kt Qc ? ? ? ? plain to tidal flat sabkha Limestone Member is widespread but too thin to map as a Jcb ? ? Jcls ? Qai Kt ? Jcg Gypsiferous member (Paria River Member of Thompson separate unit; outcrop of this thin member along the ? ? Qa Kscl Ksc Qah and Stokes, 1970)—Gypsum and minor interbedded vaguely exposed contact between units dmm and dml in Kd ? ? Kw Kd Lower(?) Qa Tcl ? Jt Qms Kd ? ? ? ? Jcl Cretaceous claystone, as prominent widespread basal unit of member; southeastern part of map area is indicated by line ? Kk Qc ? Qa *K–0 Unconformity white, gray, pink, massive, and cliff forming; absent or decoration Depositional environment: very shallow, ? Qes Jcls Jcw Jcg ? ? Kscu Qa Jn ? Je represented by thin solution breccia in northeastern part of restricted, low-energy marine ? Kt Kt Qao Qa quadrangle; overlain by interbedded reddish-brown and gray dml Lower red member (Lower Triassic)—Slope-forming, Jcb Kscl ? ? Je Kt Jcls Jcw sandstone, siltstone, mudstone, and gypsum; capped by reddish-brown to grayish-red and grayish-brown siltstone Qa Kscu Kw Qb Jcu light-gray sandstone, siltstone, mudstone, gypsum, and and interbedded fine-grained, arkosic, micaceous, Qa Qa Qb Jcg Qa Qao pelecypod-bearing limestone. Member thins eastward from Jcu Jc calcareous sandstone; ripple marks and small-scale Kscu Jcb about 15–33 m in western part of quadrangle to less than crossbeds common; unit generally coarsens upwards. About Middle Jurassic Qms Jcl 10 m in northeastern part, where it is included in upper unit 43–67 m thick (Doelling and Davis, 1989, p. 34), Kscl Qao Jn Jcls (Jcu) of Carmel Formation. Depositional environments: thickening westward. Depositional environment: similar to Kt Jt Jm JURASSIC sabkha and lower coastal plain that of upper red member, probably coastal plain Kd Kd *J–2 Unconformity Qa d Jcw Jcb Banded member (Crystal Creek Member of Thompson mt Timpoweap Member (Lower Triassic)—-Ledge- to cliff- Kt Qa Qms Qa Jt Kscl Jcw Qah Jt and Stokes, 1970)—Gypsiferous sandstone, siltstone, and forming, tan to yellowish-gray limestone, dolomitic Qc Qai *J–1 Unconformity Kd Kw mudstone; reddish brown, light brown, and light gray; limestone, dolomite, calcareous sandstone, siltstone, chert Qc Qbc Jn interbedded with clay-gall conglomerate and gypsum. Thins breccia, and chert granule- to pebble- conglomerate; minor Jcls Qa Kd Jcb Jkt Qa ? Kd Jcb Kscl Jnl Jkt eastward from about 55 m to 10–40 m. Depositional yellow shale; thin to thick bedded; lower contact with Qms ? Qao Jk Lower Jurassic environments: lower alluvial plain and sabkha underlying Kaibab Formation is a disconformity commonly ? Kt Qay Jk Jcls Limestone member (Co-op Creek Member of Doelling and marked by a 1- to 2-m-thick chert breccia and (or) Jm Jt Davis, 1989)—Mostly limestone and calcareous shale, conglomerate; contact locally difficult to recognize because Je *J–0 Unconformity minor sandstone, dolomitic limestone, dolomite and local lithologies of underlying and overlying beds are similar. Qms Kt Qls Qah minor gypsum; yellowish gray, light olive gray, and tan; Thickness of Timpoweap about 6–15 m (Doelling and Qls d Kd Qao Qes cp Davis, 1989, p. 32). Base is d–1 unconformity of d limestone mostly micritic to very finely crystalline, in part Qms Jcls c Upper Triassic Pipiringos and O’Sullivan (1978). Depositional Qb Qbc dcs oolitic, arenaceous, and coquinoid. Minor sandstone is thin Kscu Qms Kd Kt Kd Qai Qc Kscl Kscu Jcw Jcb Jn to medium bedded, flaggy to blocky. Member weathers to environments: very shallow, restricted(?) marine shelf and Kscl Jm *d–3 Unconformity lower coastal plain having low-energy stream input Jt Jt Qa cliffs and ledges and to steep slopes. Basal beds are Jcls Middle(?) and Jcw dmu commonly vivid reddish-brown siltstone. Locally fossil- Pk Kaibab Formation (Lower Permian)—Upper part is slope- and Lower Triassic Qa Jn TRIASSIC iferous, containing pelecypods, gastropods, and crinoid ledge-forming, gray to yellowish-gray limestone, dolomitic E Qa Qai dms columnals, including Pentacrinus asteriscus. Thickness limestone, dolomite, sandstone, and banded chert; thickness Jcls Kd N Qbc Qa Qay d about 10–60 m in eastern part of quadrangle, 76 m at about 24 m. Gypsum beds in western areas. Best exposed O Qes dm dmm mv Jcg Qb Meadow Creek, and 90–120 m in westernmost part. in Kaibab Gulch. This is the informal Alpha member of Jcb Qms Kt Z Qay Lower Triassic Kt Qls Qah Jcu Qes QTa dml Depositional environments: lagoon or bay and low tidal flat McKee (1938) and the Harrisburg Member of Nielson Qay Jcu Carmel Formation, upper unit—Mapped in northeastern (1981). Underlain by about 60 m of cliff-forming, gray, T Jcu d Qms mt cherty limestone (80 percent) and calcareous, tan to gray, Qah L part of quadrangle. Slope-forming, light-red, fine-grained, Jcw Jcu Jk Jcls *d–1 Unconformity friable sandstone and siltstone. Includes equivalents of fine- to coarse-grained sandstone; chert occurs as white and Kt U Qb Qms Qah gypsiferous member and Winsor Member of Carmel brown spherical nodules, irregular masses, and tabular Jcg A QTa Jcg Pk layers in limestone and sandstone. Corals, brachiopods, Kd F Jn Formation, which lose their individuality eastward. Basal Jt Jn part includes beds equivalent to Thousand Pockets Tongue bryozoans, and crinoids common in some limestone beds. Kd QTa Pt Lower Permian PERMIAN Jcb Jm of Page Sandstone (Peterson and Pipiringos, 1979), This unit includes the informal Beta and Gamma members R Pch Jcls d exposed in northeastern part of quadrangle; mostly cliff- of McKee (1938) and is the Fossil Mountain Member of QTa E Qao cp Qms Jcls Nielson (1981). Depositional environments: upper part, ? Jcw I Jcb Jcb Jn *Unconformity of Pipiringos and O’Sullivan (1978) forming, quartzose, variegated sandstone, fine to medium Jcb marginal shallow restricted marine and bay or lagoon; lower Jcg V grained, having high-angle crossbeds; thickness about 0–9 Jt E part, open marine. Jk Kd Jcb Qah m; pinches out west of Paunsaugunt fault zone. Total upper Jcw Qao S unit thickness about 80–140 m Pt Toroweap Formation (Lower Permian)—Upper part is slope- dcs dmu Qa Jcl Carmel Formation, lower unit—Mapped in northeastern forming, yellowish-gray and reddish brown sandstone (70 QTa Qc Qc ? part of quadrangle. Sandstone, siltstone, mudstone, and percent), sandstone breccia (20 percent), gray arenaceous to Qesh Jt Jt Qay DESCRIPTION OF MAP UNITS to litharenite; drab yellowish-gray to medium-gray, salt-and- limestone. Includes equivalents of banded and limestone crystalline limestone (less than 10 percent), and minor red Qds Jcls Jcls Qls Qc ? Jcb Qb Jt Jn Jk pepper appearance, and clay matrix; weathers brownish members of Carmel Formation, which thin eastward and shale and travertine interbedded or associated with breccia; Jt Qay d ALLUVIAL DEPOSITS bedding generally irregular, in part contorted; 46 m thick. Jcb ms ? gray with earthy bluish appearance; contains abundant become difficult to differentiate. Lower unit about 70 m Jcls Qam small- to medium-scale trough crossbeds; contains lesser thick Exposed in Kaibab Gulch. This is the Woods Ranch Qc 2 Qa Alluvium (Holocene)—Very recent unconsolidated deposits of Qay locally derived sand, silt, clay, and minor gravel of modern amounts of yellowish-orange-weathering, fine-grained Member of Nielson (1986). Lower part is cliff-forming, gray Jk Jcb ? Jt Temple Cap Sandstone (Middle Jurassic)—Consists of White Jt flood plains and stream channels that occupy post-1880 sandstone lenses. Clay and mudstone are mostly medium to Jt to yellowish-gray limestone, siliceous to arenaceous, in part Qa Jcb Jk Throne and Sinawava Members, undivided. Cliff-forming Qc Jt Qesh Qes Qc dark gray, in part carbonaceous, containing a few pale-red containing gray chert as nodules, irregular masses, and Jk ? arroyo floors. Thickness generally less than 2 m Jcls dmm beds. Unit contains scattered vertebrate (probably dinosaur) White Throne Member is very light gray to grayish-pink, tabular bands; includes lesser amounts of calcareous ? Qah Alluvium (Holocene)—Sand, silt, clay, and gravel of several cut- fine- to medium-grained sandstone having large-scale Qms Qay Jm bones, poorly preserved pelecypod shells, and plant sandstone. Fossils consist mostly of large brachiopods Qc and-fill deposits, roughly 1 m higher than unit Qam, crossbed sets like those in underlying Navajo Sandstone, Jcls Qc fragments. Basal contact characteristics are vague; unit locally abundant in limestone; unit is 30 m thick. This is the Qa dcp ? dissected by post-1880 arroyos. Includes eolian sand and and minor interbedded, reddish-brown, tabular siltstone and Qds Jk appears to interfinger with underlying Wahweap Formation. Brady Canyon Member of Nielson (1981). Depositional Jcb Jt residuum in places. Radiocarbon ages from deposits along silty sandstone; unit as much as 50 m thick. Underlying Qah ? Qah Estimated thickness 0 to about 75 m; absent or environments: coastal plain, restricted marine, and open Qah Qc dmv Park Wash and Kitchen Corral Wash (east part of intermittently present in vicinity of, and east of, Sevier fault Sinawava Member is mostly thin-bedded, reddish-brown marine; breccias possibly post-depositional due to solution dcp Qds Jn quadrangle north of U.S. Highway 89) indicate five siltstone, silty sandstone, and mudstone as much as 15 m Jn Jn dcp Qa zone. Depositional environment: upper(?) alluvial plain. of evaporite beds. Upper and lower parts similar to upper Qes ? depositional phases beginning at 6,320, 5,650, 5,390, Qay Qls dml Palynology indicates that Kaiparowits(?) Formation in thick. Formation thins eastward to a thin sandstone bed and lower parts, respectively, of overlying Kaibab Formation Qes Jk d 4,330, 2,145, and 340 yr B.P. Narrow belts of unit Qam between lower unit of Carmel Formation (Jcls) and Navajo Qc mu Markagunt Plateau is of mid-Coniacian through Santonian Pch Coconino(?) Sandstone and Hermit Formation, undivided Jk Qa are mapped with unit Qah in western part of map area Sandstone (unit Jn) northeast of Burnt Cedar Point (24 km Qa ? age, older than typical Kaiparowits Formation (Campanian) (Lower Permian)—Coconino unit, 20 m thick, consists of Qa Alluvium, undivided (Holocene and Pleistocene)—Sand, east of Mt. Carmel Junction). There it thins eastward to a Jm Qay in southern Kaiparowits Plateau (Nichols, 1997) buff, fine-grained, quartzose, in part crossbedded sandstone Qc gravel, silt, and clay at various altitudes; not correlated with featheredge. Basal beds are locally conglomeratic; base of Jt Qes Qc Qai Kw Wahweap Formation (Upper Cretaceous)—-Slope- and ledge- (60 percent) containing minor conglomerate lenses; gray to Qds Qesh alluvial deposits described below Temple Cap abrupt, interpreted to correspond with J–1 Qah forming shale, clay, siltstone, and sandstone; minor buff, crystalline to arenaceous limestone and calcareous Jm Qah Qes Qay unconformity of Pipiringos and O’Sullivan (1978). Total Younger alluvium (Holocene? and Pleistocene?)—Weakly to concretionary limonite, carbonaceous shale, silty limestone, sandstone (35 percent); and minor calcareous shale and dcs Qes Qah d d moderately consolidated deposits of sand, gravel, and thickness as much as 60 m in southwestern part of Qms Qa Jn cp mm and clay-gall and limestone-clast conglomerate. Shale and chert. Hermit Formation, 17 m exposed, consists of red Qah Qay ? quadrangle. Depositional environments: eolian dune field gravelly sand. Forms low terraces 5–10 m topographically clay are medium to light gray and pale red, having a and green concretionary sandstone (65 percent) and red to Jn dms dmv higher than unit Qah. Thickness 5–20 m to alluvial plain Jn Qes ? relatively high clay mineral content. Sandstone constitutes buff sandy shale (35 percent). Exposed in Kaibab Gulch. Qds Qao Jm Qao Qai Intermediate alluvium (Pleistocene)—Moderately consolidated about 10–25 percent of unit, mostly in lower part; is mostly Jn Navajo Sandstone (Lower Jurassic)—Sandstone; highly For details of section see Doelling and Davis (1989, p. Qc Jkt Qds ? deposits of gravel, gravelly sand, and coarse sand. Forms a fine to medium grained, subarkosic, trough crossbedded, quartzose, very light to light gray, pale orange, yellowish 27–28) moderately dissected intermediate-height terrace as much as gray, and reddish orange, fine to medium grained, and well Jn Qc calcareous; commonly weathers to vivid yellowish orange Jk Qes d d E Jn cp Qc 3 cp 25 m topographically higher than unit Qay. Thickness hues; is mostly well indurated but less indurated and coarser sorted; contains prominent, large-scale tabular- to wedge- Qes Jcls Contact—Includes approximately located and inferred contacts. N Qai 5–40 m grained in upper part; occurs in beds mostly less than 5 m planar crossbeds in thick to very thick sets; locally contains 3 contorted and convoluted beds; generally weakly cemented Dashed and queried where location very uncertain O dmu Qao Older alluvium (Pleistocene)—Firmly consolidated deposits of thick but as much as 15 m thick. Lenticular channel-fill Qes Qes J dmm by ferruginous, siliceous, and calcareous cement; thin Jkt Z dmt gravel, sandy gravel, and coarse sand. Occurs in sandstone is common and most abundant between Meadow Fault—Dashed where approximately located or inferred; dotted O ? Qao ? moderately dissected terraces and pediments higher than Creek and East Fork of Virgin River. Formation contains reddish-brown claystone and siltstone partings and rare thin Jn H Jkt where concealed; queried where sense of movement Jnl Jk d limestone beds between some crossbed sets. Locally, the N m unit Qai; on larger streams terrace is roughly 50–70 m Qah sparse fresh-water pelecypods and gastropods and limonitic uncertain. Bar and ball on downthrown side K T ? S above stream channel. Highest deposits may be of late wood fragments. Formation thins eastward to feather edge. lower 20–100 m of the Navajo includes tabular Kayenta-like Qc Qds A A O L Pk sandstone beds. Navajo includes three gross color divisions Anticline—Dotted where concealed Jt N ? Tertiary age. Thickness 10–50 m Basal contact drawn at top of quartzose sandstone and N Jn Qes U Qc in western part (descending): white, pink or vermilion, and A QTa Alluvium (Pleistocene or Pliocene)—-Firmly consolidated conglomerate (Drip Tank Member equivalent) at top of Syncline—Showing direction of plunge. Dotted where

A ? brown. Forms the White Cliffs. Thickness ranges from B Jnl Jk ? Pt upper unit of Straight Cliffs Formation. Thickness about Jm C gravel and sand deposits; contains pebbles and cobbles of concealed

Qc F Jm about 440 m in eastern part to about 550 m along Qes Qah Qes A 100–200 m east of Sevier fault zone and about 245–305 m Jt mostly gray and red quartzite and silicified limestone. 8 Qms N Parunuweap Canyon near western boundary of quadrangle. Qes Preserved in stream terrace remnants west of Sevier fault west of zone. Depositional environments: upper(?) alluvial Strike and dip of beds Y 2 plain, fluvial and lacustrine Depositional environment: eolian dune field “sand sea” with

T zone at heights of 50–120 m above present streams. Age Jn O Qc Jn dml Pch interdune ephemeral lakes, ponds, and small streams. C dmu

Jn N Qay ? uncertain Kscu Straight Cliffs Formation, upper unit (Upper Cretaceous)— Local structural depression—Hachures point downdip N

R Mapped unit includes local areas of weathered sand E ? dmt Slope- and ledge-forming, interbedded claystone, mudstone,

U E dcp Qah EOLIAN DEPOSITS residuum and Quaternary eolian sand Jnl F N d siltstone, sandstone, conglomerate, and minor ironstone, Prominent fracture—Probable joint or fault E A ms Jk Jk G Jkt Tenny Canyon Tongue of Kayenta Formation (Lower O U limestone-clast conglomerate, carbonaceous shale, and thin Jkt K Qesh Jcls d ? Eolian sand in active dunes (Holocene)—Light-gray, U cs Jurassic)—Lithology similar to main body of the Kayenta Qah Z L coal beds. Sandstone forms 10–30 percent of unit; is Jkt ? yellowish-gray, and reddish-orange, fine to medium, well- Volcanic vent T

A Formation described below. Present west of Johnson Qc Qds Qesh sorted sand composed mostly of quartz; largely derived yellowish gray, subarkosic, fine-grained to very coarse F Jk Canyon, where it overlies Lamb Point Tongue of Navajo S grained, moderately to poorly sorted; moderately indurated; A Z from Navajo Sandstone T ? Sandstone. Thins eastward to a featheredge. Thickness Landslide scarp—Hachures point in direction of movement O N ? Qai weathers to drab light-brown to pale-yellow tabular sets of U ? Qes 7 L Qes Eolian sheet sand, alluvium, and residuum (Holocene and N beds having cavelike, fretted reentrants; has low- to about 35 m west of Johnson Canyon, about 185 m thick Jt L U ? Jn U Pleistocene)—Sand as in unit Qesh, in widespread, mostly E near Hildale Landslide block—Showing unit symbol of parent rock T ? d Pk moderate-angle trough crossbeds and commonly contorted, A mm A Jkt stabilized sheets and as fillings of topographically low areas. Qds Jm convolute bedding. Finer-grained lithologies are commonly Jnl Lamb Point Tongue of Navajo Sandstone (Lower Jurassic)—

P Qam F d Lacks dune morphology; locally includes small bedrock Jkt Jnl cp d light to medium gray and minor pale red and reddish brown. Predominantly sandstone similar to that in Navajo ms outcrops, slope-wash deposits on gently sloping surfaces, Qds Jnl Z Jm Upper unit consists of three subunits (not mapped Sandstone; conformably lies between Tenny Canyon residuum, and locally derived sand and silt deposited by O R separately): upper, middle, and lower. Upper subunit is Tongue and main part of Kayenta Formation; mapped only Jk d minor intermittent streams and washes Jk N ? ml E distinctive interbedded gray quartzose sandstone and granule where overlain by unit Jkt; contact between unit Jnl and Qds Qay Qds Eolian sand in mostly inactive dunes (Holocene and I Jn E to pebble conglomerate that contains well-rounded, resistate lower part of unit Jn is an artificial cutoff. Mapped from Qes Qah Pleistocene)—Sand as in unit Qesh, but mostly reddish Qes Jm V Jk Qah dcp clasts, is moderately indurated, weathers to low-angle slopes approximately west of Johnson Canyon to Moquith ? Pk orange; in mostly vegetation-stabilized climbing and falling E Mountains; thins westward from about 150 m to about 85 Qms 1 d and saddles and is 15–30 m thick. This upper subunit is Qam cp Qls Qah dmt dunes (sand ramps and aprons) that flank buttes and mesas, Qds Qesh S interpreted to be the Drip Tank Member of the Straight m; farther west, it is about 8 m thick in the vicinity of Qds d Qai and as small dune fields in canyons or in lowland areas; Jn Jkt mm Cliffs Formation of the Kaiparowits Plateau (Peterson, Hildale, where it is mapped with Kayenta Formation Jkt Jk Qes largely derived from Navajo Sandstone. May be as much as Qds Qay 1969). Middle subunit forms steep slopes and ledges; Jk Kayenta Formation, main unit (Lower Jurassic)—Widespread REFERENCES CITED IN “DESCRIPTION OF MAP UNITS” Jm 15 m thick in places. Includes gently sloping areas dm contains sandstone cliffs as much as 25 m high, especially unit that intertongues with Navajo Sandstone as Tenny Qah Qay dcs d modified by slope wash mu in area between Muddy Creek and East Fork of Virgin River, Canyon Tongue (unit Jkt), upper part of the Kayenta, and Best, M.G., McKee, E.H., and Damon, P.E., 1980, Space-time-composition Jnl ? Jn patterns of late Cenozoic mafic volcanism, southwestern Utah and MASS-WASTING DEPOSITS where sandstone is about 35 percent of subunit; sandstone underlies Lamb Point Tongue of Navajo as the main Qc dcs dml Jk Qay is much less abundant in westernmost areas of quadrangle. Kayenta body (unit Jk). Vivid reddish-orange to reddish- adjoining areas: American Journal of Science, v. 280, p. 1035–1050. Qay Qds d Qay ? d cp dcp ? ms Qc Colluvium, undivided (Holocene and Pleistocene?)—Poorly Bowers, W.E., 1972, The Canaan Peak, Pine Hollow, and Wasatch Qay Middle subunit, about 240–245 m thick, contains thin coal brown siltstone, mudstone, and very fine grained to fine- Jk Qah d Formation in the Table Cliff region, Garfield County, Utah: U.S. Jk cp dcs Qes Pk sorted debris flow, talus, and rockfall deposits of sand and beds and is interpreted to be roughly equivalent to John grained, quartzose sandstone having calcareous, Qah d ? cs angular to subangular blocks of rock as unsupported masses Henry Member of Straight Cliffs Formation of Kaiparowits ferruginous, and clay matrix; includes minor Geological Survey Bulletin 1331–B, 39 p. Qah Cashion, W.B., 1961, Geology and fuel resources of the Orderville-Glendale Jm Qam d Qay dcs Jm and as clasts in clayey matrix, and small landslide deposits. Plateau (Peterson, 1969). Lower subunit is slope forming, intraformational pebble conglomerate and thin beds of gray Jk Jm dmu cp dmu B' Includes clayey weathering residuum and slope wash in approximately 50- to 75-m thick, mostly poorly resistant limestone. Sandstone percentage decreases westward. area, Kane County, Utah: U.S. Geological Survey Coal Investigations Base from U.S. Geological Survey, 1980 1 SCALE 1:100 000 Edited by Diane E. Lane. Digital database 14 /2 ˚ some areas, such as west of Meadow Creek, south of Utah Map C–49, scale 1:62,500. by David Maxwell, Southern Utah University, mudstone and siltstone and minor Ostrea-bearing limestone Unit contains sparse dinosaur tracks and bones. Padian Projection and 10,000-meter grid, zone 12 1 0 1 2 345 678 MILES ———1967, Geologic map of the south flank of the Markagunt Plateau, Universal Transverse Mercator and Jeremiah Workman. Graphics and digital State Highway 9 and sandstone; interpreted to be an approximate correlative (1989) identified scutes of dinosaur Scelidosaurus (Early 25,000-foot grid ticks based on Utah cartography by Diane E. Lane, William Sowers, Qls Landslide slump-block deposits (Holocene and of the Smoky Hollow Member of the Straight Cliffs Jurassic) from Kayenta Formation in Arizona. Main northwest Kane County, Utah: U.S. Geological Survey Miscellaneous 1 012 3 4 56789 10 KILOMETERS Dennis Welp, and Jeremiah Workman coordinate system, south zone. 1927 North Pleistocene)—Essentially coherent, slumped and rotated Formation of the Kaiparowits Plateau (Peterson, 1969). Kayenta unit is about 35–45 m thick in south-central part of Geologic Investigations Map I–494, scale 1:62,500. American datum Manuscript approved for publication July 23, 1998 TRUE NORTH blocks of bedrock, such as Toreva blocks, overlying Basal contact of unit placed at top of uppermost cliff- quadrangle, and about 200 m thick in westernmost Doelling, H.H., 1972, Alton coal field, in Doelling, H.H., and Graham, MAGNETIC NORTH CONTOUR INTERVAL 50 METERS incompetent units such as Petrified Forest Member of forming sandstone of the lower unit of Straight Cliffs, exposures. Depositional environment: alluvial plain R.L., Southwestern Utah coal fields: Utah Geological and Mineral APPROXIMATE MEAN NATIONAL GEODETIC VERTICAL DATUM OF 1929 Survey Monograph 1, p. 1–66. DECLINATION, 1980 Chinle Formation, Entrada Sandstone, and Tropic Shale. believed to be generally coeval throughout map area. A Jm Moenave Formation (Lower Jurassic)—In southwestern part Doelling, H.H., and Davis, F.D., 1989, The geology of Kane County, Includes relatively small landslide sheet deposits in some distinctive sandstone and conglomerate about 15 m thick, of quadrangle consists of Springdale Sandstone, Whitmore Utah—Geology, mineral resources, geologic hazards, with sections on areas similar to the Drip Tank Member equivalent, occurs in Point, and Dinosaur Canyon Members; in south-central and Petroleum and carbon dioxide by C.J. Brandt: Utah Geological and Qms Mass landslide sheet deposits (Holocene and places in lower part of middle subunit; it is tentatively southeastern parts consists of members not mapped Mineral Survey Bulletin 124, 192 p.; and Map 121 to accompany Pleistocene)—Large coherent blocks of rock in a matrix of correlated with the Calico bed of Peterson (1969). Middle separately in either area. Springdale Sandstone Member is Bulletin 124, 10 pls., scale 1:100,000. smaller clasts and clay, locally exhibiting landslide scarps, and lower subunits contain sparse mollusks, wood cliff-forming, pale-reddish-brown to pale-red, fine-grained to Hintze, L.F., 1973, Geologic history of Utah: Brigham Young University sag areas, and downslope creep surface textures. fragments, and plant impressions. Total thickness of unit very fine grained sandstone; blocky to massive, with trough Geology Studies, v. 20, pt. 3, 181 p. A A' Thickness largely unknown due to poor exposures, but in about 300–380 m; thickest in areas of abundant sandstone. crossbeds, ripple marks, and mud cracks; contains Tbh Tcw METERS Depositional environment: lower coastal plain or lower McKee, E.D., 1938, The environment and history of the Toroweap and METERS Tbh part at least as much as 24 m thick. Originates in and distinctive lenses of claystone- and siltstone-pebble Dairy Creek Kk? Tcw Qah Utah Highway 14 alluvial plain; Drip Tank equivalent probably of braided Kaibab Formations of northern Arizona and southern Utah: Carnegie 2500 Kscl Tcl Tcl Creek Tcl Tbh 2500 mostly overlies incompetent units, notably the Tropic Shale, conglomerate and minor thin siltstone and mudstone

Creek Tcl Tbh Qah Kscu Kw Kw Qah Kk? TclTcw Tcw stream system origin Institute of Washington Publication 492, 268 p. Kscl Shingle Mill Dakota, and Chinle Formations. Includes small unmapped partings; locally intertongues with underlying Whitmore Kt Qms Kscu Qah Mullet, D.J., Wells, N.A., and Anderson, J.J., 1988, Unusually intense Jt Jc Jt Jc Qah Qms Kd Little Meadow Kscu Kw Tcl areas of alluvial, pond, and slope-wash deposits, and Kscl Straight Cliffs Formation, lower unit (Upper Cretaceous)— Point Member and, where that member is absent, with 2000 ? ? 2000 pedogenic modification of the Paleocene-Eocene Claron Formation of Jn Jc Kscu Kk? Kw surface slump material Predominantly cliff-forming sandstone; fine to medium Dinosaur Canyon Member. Thickness of Springdale is East Fork Kt southwestern Utah: Geological Society of America Abstracts with Jn Jn River Virgin Kd grained, well sorted, quartzose, calcareous, medium gray to about 50–65 m in southeastern and south-central areas and Jn* Jn Jn Jc Kscu Programs, v. 20, no. 5, p. 382. Shunes Creek Qc Qah Jt IGNEOUS ROCKS grayish orange; weathers grayish orange and dark yellowish 1500 South Creek Jk 30–35 m in southwestern part. Whitmore Point Member, Qms Jk ? ? ? 1500 Qms Qc Jk Qms Jk Jn Kscl ? ? Nichols, D.J., 1997, Palynology and ages of some Upper Cretaceous Kt Qb Olivine basalt (Holocene and Pleistocene)—Medium- to dark- orange; in medium to very thick planar beds and low-angle present west of Johnson Canyon, is greenish-gray to dc Jm Kscl Kt formations in the Markagunt and northwestern Kaiparowits Plateaus, Jk Jc Kd gray, dense to vesicular basalt as blocky lava; includes crossbeds; interbedded with shale, mudstone, and silty to grayish-red, thin-bedded siltstone, variegated claystone, and 1000 dc Jm Jn 1000 southwestern Utah, in Maldonado, Florian, and Nealey, L.D., Geologic downslope concentrations of blocks that may be flow sandy limestone. Shale, in part carbonaceous, contains thin interbedded thin sandstone beds similar to those in the Jc Studies in the Basin and Range–Colorado Plateau transition in d coaly lenses and lenses of coquinoid Ostrea-bearing organic Springdale; contains fresh-water fish remains that have c Jk Jn margins or talus; contains phenocrysts and groundmass southeastern Nevada, southwestern Utah, and northwestern Arizona: 500 Jm 500 limestone. Fossils include pelecypods, ammonoids, and been considered to be of Triassic age and palynomorphs Jn minerals of olivine, labradorite, titaniferous augite, and iron- U.S. Geological Survey Bulletin 2153, p. 81–95. Jc represents Carmel Formation, undivided; dc represents Chinle Formation, undivided; very thin Quaternary units not shown; trace fossils; bioturbation features are locally common. Unit dated as Early Jurassic (Peterson and Pipiringos, 1979, p. titanium oxides. Minor basalt dikes as local features. Flows Nielson, R.L., 1981, Stratigraphy and depositional environments of the *landslide block of unit Jn; units Kk? and Kscl shown in subsurface in vicinity of Utah Highway 14 are not known to be present there is approximately equivalent to Tibbet Canyon Member of B31). Whitmore Point is slope-forming and forms a SEA LEVEL SEA LEVEL occur on topographic benches and in part along present Toroweap and Kaibab Formations, southwestern Utah: Salt Lake City, Straight Cliffs Formation of Kaiparowits Plateau (Peterson, reentrant below the Springdale; thickness is 0 to about 15 VERTICAL EXAGGERATION ×2 stream valleys. Radiometric age of basalt along Tenny University of Utah, Ph.D. dissertation, 1084 p. 1969) east of the mapped area. Thickness varies from m, thickening westward. Dinosaur Canyon Member is Creek (26 km east-northeast of Glendale) is 1.1 Ma; basalts ———1986, The Toroweap and Kaibab Formations, southwestern Utah, in about 25 m to as much as 100 m; unit thickens westward largely steep-slope-forming, reddish-orange siltstone, in western part of quadrangle are 0.36, 0.56, and 0.8 Ma Griffen, D.T., ed., Thrusting and extensional structures and mostly by intertonguing with underlying Tropic Shale from variegated reddish-brown to green mudstone, and very fine (Best and others, 1980). Maximum thickness of unit Qb mineralization in the Beaver Dam Mountains, southwestern Utah: Utah about 50 m to as much as 180 m. Depositional environ- grained, thin- to thick-bedded tabular sandstone and probably about 20 m Geological Association Publication 15, p. 37–53 (Utah Geological ments: mostly marine shoreface and foreshore with minor includes minor chert- and claystone-pebble conglomerate. Qbc Cinder cones and vents—Gray, black, and red cinders, Association Guidebook, Annual Field Conference, 1986). lagoon or bay influence Sandstone is quartzose, consisting of subangular to scoria, and minor volcanic bombs Padian, K., 1989, Presence of the dinosaur Scelidosaurus indicates Jurassic Ksc Straight Cliffs Formation, undivided (Upper Cretaceous)— subround, well-sorted grains cemented by calcite; increases age for the Kayenta Formation (Glen Canyon Group, northern Arizona): B B' SEDIMENTARY ROCKS Mapped in eastern part of quadrangle, east of Slide in abundance northeastward (Doelling and Davis, 1989, p. Geology, v. 17, p. 438–441. METERS METERS Tbh Brian Head Formation (sandstone and conglomerate unit Canyon; includes both upper and lower units of Straight 42). Member thickness in eastern part about 80 m; Qao Kscu Peterson, Fred, 1969, Four new members of the Upper Cretaceous Straight 2500 Qah Kanab Creek 2500 Cliffs where lower unit is too thin (generally less than 15 m) appears to thicken westward to about 120 m. Base of Qms Bald Knoll as revised in Sable and Maldonado, 1997) (lower Tbh Kscl Qms Cliffs Formation in the southeastern Kaiparowits region, Kane County, Qms Qao Qao Kscl to portray at scale of map. Lithologies similar to those Moenave is J–0 unconformity of Pipiringos and O’Sullivan Qah Qah Qah Qb Qbc Qao Qao Jc Tertiary)—Sandstone, conglomerate, mudstone, and minor Utah: U.S. Geological Survey Bulletin 1273–J, 28 p. Tcl Tcw Qah Qah Kt Jn Qes Jn Jk (1978). A distal tongue of probable Wingate Sandstone Skutumpah Creek Pk described above. Total thickness about 300–340 m; 2000 Kt Kt Qay Qah d 2000 limestone, shale, and clay. Mostly slope forming; weathers Peterson, Fred, and Pipiringos, G.N., 1979, Stratigraphic relations of the Jc Wash Telegraph m Qc d Coyote Wash Kw Kd Qah m Qes drab gray and brown; includes pale-orange to yellowish uppermost subunit (Drip Tank Member equivalent) is about (Lower Jurassic) less than 2 m thick has been reported at Qah Qai Jk Navajo Sandstone to Mid-Jurassic formations, southern Utah and Kcsu Kscl Jc Kd Jn Qah gray conglomerate that contains moderately well rounded 30–50 m thick base of the Moenave at the Managanese King Mine, about Jk Jm Jk Jn northern Arizona: U.S. Geological Survey Professional Paper 1035–B, 1500 Jn Jm dc 1500 2 km west of the eastern quadrangle boundary (Doelling Jn Jn d Pch Pt pebbles and cobbles of chert, quartzite, and limestone, and Kt Tropic Shale (Upper Cretaceous)—Slope-forming, drab, thin- 43 p. Kt m dc and Davis, 1989, p. 41). West of this, the Moenave litharenite that is poorly sorted, strongly crossbedded, and bedded mudstone that weathers gray to olive gray and Pipiringos, G.N., and O’Sullivan, R.B., 1978, Principal unconformities in Kd dc Jm Formation or intermittent, very thin Wingate, mapped with 1000 Jk Pk d dcp 1000 poorly to moderately indurated. Lowermost beds are yellowish gray; dark upper part generally has higher organic Triassic and Jurassic rocks, western interior United States—A Jk Jk m the Moenave, overlies Chinle Formation. Depositional Jc yellowish-orange-weathering clay and siltstone. Lower content than lower part; bentonitic mudstone in lower part. preliminary survey: U.S. Geological Survey Professional Paper dm environments: alluvial flood plain and lacustrine. Total contact appears to be abrupt and may be an unconformity. Minor carbonaceous shale and coal occur in western part of 1035–A, 29 p. Moenave thickness is about 150 m in southwestern part 500 500 Maximum exposed thickness of unit is about 120 m quadrangle. Generally west of Muddy Creek (north of Mt. Sable, E.G., and Maldonado, Florian, 1997, The Brian Head Formation and about 100–130 m in south-central and eastern areas BEND IN Jc represents Carmel Formation, undivided; dc represents Chinle Formation, undivided; dm represents Moenkopi Formation, undivided; very thin Quaternary units not shown SECTION Claron Formation (lower Tertiary)—Forms the Pink Cliffs. Carmel Junction), successions of cliff-forming, yellowish- (revised) and selected Tertiary sedimentary rock units, Markagunt dc SEA LEVEL SEA LEVEL Consists of two mapped informal units described below. gray quartzose sandstone as much as 50 m thick having Chinle Formation (Upper Triassic)—Exposed in southeastern Plateau and adjacent areas, southwestern Utah, in Maldonado, Florian, VERTICAL EXAGGERATION ×2 Previously referred to as Wasatch Formation (Cashion, planar beds to low-angle crossbeds occur in lower part and part and along southern boundary of quadrangle. Base is and Nealey, L.D., eds., The Basin and Range–Colorado Plateau d 1967) or Cedar Breaks Formation (Hintze, 1973) within thinner successions are present in uppermost part. –3 unconformity of Pipiringos and O’Sullivan (1978). transition in southeastern Nevada, southwestern Utah, and the quadrangle or in adjoining areas. Maximum thickness Limestone and calcitic septarian limestone concretions are Shown undivided only in cross sections northwestern Arizona, 1995: U.S. Geological Survey Bulletin 2153, p. d about 300 m. Base is a low-angle regional unconformity. locally present. Unit contains marine fossils ranging in age cp Petrified Forest Member—Slope- and badland-forming, 7–26. Apparent sparsity of primary depositional features from upper Cenomanian to Turonian. The Tropic grades variegated purple, red, yellow, gray, and greenish-gray Thompson, A.E., and Stokes, W.L., 1970, Stratigraphy of the San Rafael suggested to Mullet and others (1988) that pedogenic into, and interfingers with, overlying Straight Cliffs bentonitic mudstone and interbedded gray to nearly white Group, southwest and south-central Utah: Utah Geological and Mineral processes have largely altered the original strata of fluvial Formation mostly west of Muddy Creek; its basal contact is sandstone and conglomeratic sandstone; mudstone firmly Survey Bulletin 87, 54 p. 113˚00' 112˚45' 112˚30' 112˚15' 112˚00' and lacustrine origin placed at top of an upper coal zone of Dakota Formation cemented, in part calcareous, locally containing limestone 37˚30' (Cashion, 1967). Thickness variable, but Tropic generally 14 S Map MF–520, scale 1:24,000 (with modifications from unpublished Spring Point] quadrangle, Kane County Utah: U.S. Geological Survey and Zelten, J.E., 1988b, Mineral resources of the Parunuweap Canyon Tcw White limestone unit—Limestone and minor limy shale and and manganese-rich nodules. Sandstone has clay matrix; NT SOURCES OF GEOLOGIC DATA PINK Long Valley thickens eastward from about 90 m to more than 305 m. contains silicified logs and log fragments. Rocks of member Junction geologic mapping by Richard Hereford, 1986–87). Miscellaneous Geologic Investigations Map I–258, scale 1:24,000. Wilderness Study Area, Kane County, Utah: U.S. Geological Survey chalky clay that forms cliffs and steep slopes. Limestone is CLIFF Geology from the published and unpublished sources listed below has been in Depositional environments: mostly marine offshore, are extremely slippery and unstable when wet, forming 5. Goode, H.D., 1973b, Preliminary geologic map of the Skutumpah Creek Tilton, Terry, 1991, Provisional geologic map of the Alton quadrangle, Bulletin 1746–B, 22 p. white to very light gray, massive, in part brecciated; calcite- 3 part modified and adjusted to fit the topographic base. Principal sources grading upwards to foreshore and shoreface unstable slopes prone to landsliding. Member ranges in quadrangle, Utah: U.S. Geological Survey Miscellaneous Field Studies Kane County Utah: Utah Geological and Mineral Survey Contract Van Loenen, R.E., Sable, E.G., Blank, H.R., Jr., Barton, H.N., Briggs, filled solution cavities, vugs, calcite veins, and dolomitic 1 are given first. Amount of data used from additional sources, including patches are common. Thickness about 20–40 m Kd Dakota Formation (Upper and Lower? Cretaceous)—Slope- thickness from about 130–240 m. Depositional CLIFFS HSAUGU Map MF–521, scale 1:24,000 (with modifications from unpublished Report 91–1, 2 sheets and text, 46 p., scale 1:24,000. P.H., Zelton, J.E., and Cook, K.L., 1989, Mineral resources of eight i PLATEAU photogeologic maps, dissertations, and topical studies, varies widely. Tcl to ledge-forming, interbedded mudstone and sandstone, and environments: lacustrine and fluvial with volcanic influx 89 geologic mapping by Richard Hereford, 1986–87). wilderness study areas bordering Zion National Park, Washington and Lower unit—Largely limestone and limy mudstone, and 114˚ 112˚ RANGE Sources are keyed by number to index map. 7. Hamilton, W.L., 1978, Geological map of Zion National Park, Utah: minor but distinctive bentonitic mudstone, coal, conglo- dcs 42˚ PAU Shinarump Sandstone Member—Cliff- to ledge-forming, PINK 6. Geologic mapping and compilation by Richard Hereford, 1981–89, with Springdale, Utah, Zion Natural History Association, scale 1:31,680 (with Kane Counties, Utah: U.S. Geological Survey Bulletin 1746–E, 23 p. lesser channel-form sandstone and conglomerate, siltstone, Bear limestone breccia, and dolomite; mostly vivid to pale pink merate, and ironstone. Mudstone is gray to very dark gray, gray, yellowish-gray, and grayish-orange sandstone and Lake 1. Geologic mapping (1985, 1986, 1989) and compilation by Sable in part minor additions from Doelling and Davis (1989, pls. 1 and 2). GR minor modifications from unpublished geologic mapping by E.G. Sable). 9. Sargent, K.A., and Philpott, B.C., 1987, Geologic map of the Kanab brown, and olive gray; sandstone is mostly yellowish-gray to conglomerate having low- to moderate-angle trough Logan DEER to orange and light to very light gray; bedding features are EA published in Van Loenen and others (1988a,b;1989; see entry 8, below). Bowers, W.E., 1975, Geologic map and coal resources of the Henrieville quadrangle, Kane County, Utah, and Coconino County, Arizona: U.S. 2 8. Geologic mapping and compilation by E.G. Sable in part published in Van light-gray litharenite, moderately cemented, lenticular, crossbedding; fills paleochannels in underlying beds and T SAL absent to poorly defined in carbonate rocks, which exhibit Ogden Gustason, E.R., 1989, Stratigraphy and sedimentology of the middle quadrangle, Garfield and Kane Counties, Utah: U.S. Geological Survey Loenen and others (1988a,b; 1989) and Sable and Doelling (1990, Geological Survey Geologic Quadrangle Map GQ–1603, scale trough crossbedded, and resistant. Two or three coal beds within unit; contains thin gray and green mudstone mottled to nodular textures and calcite veins and vug T LA Cretaceous (Albian-Cenomanian) Dakota Formation, southwestern Utah: Coal Investigations Map C–74, scale 1:24,000. 1993) (see below). 1:62,500. as much as 1.5 m thick occur in eastern part of quadrangle, interbeds. Conglomerate clasts are well-rounded, gray, 110˚ fillings; root casts and oncholites occur in some beds; KE Boulder, University of Colorado, Ph.D. dissertation, 376 p. Bowers, W.E.,1990, Geologic map of Bryce Canyon National Park and Pillmore, C.L., 1956b, Photogeologic map of the Springdale NE [now The Detterman, J.S., 1956, Photogeologic map of the Kanab SE [now Kanab and two persistent coal zones having coal beds as much as black, and red chert, limestone, and angular silicified wood. SALT MTS Glendale locally contains very rare casts and molds of gastropods 4 5 Moir, G.J., 1974, Depositional environments and stratigraphy of the vicinity, southwestern Utah: U.S. Geological Survey Miscellaneous Barracks] quadrangle, Kane County, Utah: U.S. Geological Survey 7½-minute] quadrangle, Kane County, Utah, and Mohave and Coconino 5.5 m thick are present along the southern Markagunt and Thickness ranges from 0 to about 50 m ; averages about 17 LAKE and pelecypods. Well-rounded pebbles and cobbles in CITY UINTA Cretaceous rocks, southwestern Utah: Los Angeles, University of Investigations Series Map I–2108, scale 1:24,000; text, 15 p. Miscellaneous Geologic Investigations Map I–148, scale 1:24,000. Counties, Arizona: U.S. Geological Survey Miscellaneous Geologic conglomerate are abundant mostly in eastern parts of Paunsaugunt Plateaus (Cashion, 1961, 1967; Doelling, m. Depositional environment: alluvial plain with braided Roosevelt Utah Orderville California, Ph.D. dissertation, 316 p. Doelling, H.H., and Davis, F.D., 1989, The geology of Kane County, ———1956c, Photogeologic map of the Springdale SE [now Elephant Investigations Map I–137, scale 1:24,000. 1972). Conglomerate as much as 25 m thick is common as streams River SKUTUMPAH quadrangle, such as Bryce Canyon area. Locally weathers Lake THE GREAT 6 Pillmore, C.L., 1956a, Photogeologic map of the Orderville Canyon NW Utah—Geology, mineral resources, geologic hazards, with sections on Pillmore, C.L., 1956e, Photogeologic map of the Kanab SW [now Yellow channel fills in basal part of formation; contains well- d 40˚ WHITE THRONE TERRACE Butte] quadrangle, Kane County, Utah: U.S. Geological Survey to spectacular cliffs, columns, and spires. Uppermost beds m Moenkopi Formation (Middle? and Lower Triassic)—Exposed 37˚15' [now Cogswell Point] quadrangle, Kane and Washington Counties, Utah: Petroleum and carbon dioxide by C.J. Brandt: Utah Geological and Miscellaneous Geologic Investigations Map I–131, scale 1:24,000. Jacket Canyon] quadrangle, Kane County, Utah, and Mohave County, are about 15 m of reddish-orange claystone and siltstone rounded clasts of resistate chert, quartzite, limestone, in southeastern part of quadrangle. About 275–300 m UTAH Green silicified logs, and organic “trash,” some of which is 7 9 U.S. Geological Survey Miscellaneous Geologic Investigations Map Mineral Survey Bulletin 124, 192 p.; and Map 121 to accompany ———1956d, Photogeologic map of the Springdale SW [now Hildale] Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations underlain by about 30 m of light-gray limestone; in places thick in eastern areas; thickens westward. Base is d–1 uranium bearing. Diverse fossil pollen assemblage from Mt Carmel FS I–188, scale 1:24,000. Bulletin 124, 10 pls., scale 1:100,000. quadrangle, Kane and Washington County, Utah, and Mohave County, Map I–138, scale 1:24,000. west of the Sevier fault zone these beds were mapped by unconformity of Pipiringos and O’Sullivan (1978). Mapped CLIF Tunnel CLIFFS Junction WHITE lowermost part of formation suggests Barremian and Aptian WHITE 2. Cashion, W.B., 1967, Geologic map of the south flank of the Markagunt Hackman, R.J., 1957a, Photogeologic map of the Buckskin Gulch NE Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations 10. Sargent, K.A., and Philpott, B.C., 1985, Geologic map of the Johnson Cashion (1967) as the “uppermost prominent light-gray as undivided Moenkopi in southeast corner of quadrangle ages, and pollen from middle part suggests late Albian to Sevier River Green quadrangle, Kane County, Utah, and Coconino County, Arizona: U.S. because of narrow outcrop belts due to steep dips; there, Lake SAN River S Plateau, northwest Kane County, Utah: U.S. Geological Survey [now Eight-Mile Pass] quadrangle, Kane County, Utah: U.S. Geological Map I–132, scale 1:24,000. ledge-forming limestone,” but elsewhere this unit name Richfield CLIFF late Cenomanian age (Doelling and Davis, 1989, p. 73); however, the Timpoweap Member is mapped separately RAFAEL Miscellaneous Geologic Investigations Map I–494, scale 1:62,500 (with Survey Miscellaneous Geologic Investigations Map I–259, scale Sable, E.G., and Doelling, H.H., 1990, Geologic map of Elephant Butte Geological Survey Geologic Quadrangle map GQ–1602, scale 1:62,500. was applied to unit Tcw. Basal beds, 0 to about 30 m SWELL RIVER MILION marine pelecypods and scarce ammonoids occur in lower Sevier modifications from unpublished geologic mapping by Sable, 1989). 1:24,000. Detterman, J.S., and Hackman, R.L., 1957, Photogeologic map of the thick, consist of yellowish-orange-weathering shale, dmu Upper red member (Middle? and Lower Triassic)— Milford quadrangle, Kane County, Utah, and Mohave County, Arizona: Utah and upper parts of the Dakota. Base of formation VER Gustason, E.R., 1989, Stratigraphy and sedimentology of the middle ———1957b, Photogeologic map of the Buckskin Gulch NW [now Nephi Johnson SE [now Johnson Lakes] quadrangle, Kane County, Utah, and claystone, and siltstone, possibly equivalent to the Pine Reddish-brown to light-brown siltstone and very fine grained Geological and Mineral Survey Map 126, 2 sheets and text, 10 p., scale corresponds to K–0 unconformity of Pipiringos and HENRY Hollow Formation (Bowers, 1972), underlain by gray, well- MOUNTAINS Cretaceous (Albian-Cenomanian) Dakota Formation, southwestern Utah: Point] quadrangle, Kane County, Utah: U.S. Geological Survey 1:24,000. Coconino County Arizona: U.S. Geological Survey Miscellaneous to fine-grained sandstone having a clayey matrix; in part 38˚ indurated quartzose conglomerate and sandstone that is O’Sullivan (1978). Thickness east of Muddy Creek is about 9 10 Boulder, University of Colorado, Ph.D. dissertation, 376 p. Miscellaneous Geologic Investigations Map I–241, scale 1:24,000. ———1993, Geologic map of the Barracks quadrangle, Kane County, Geologic Investigations Map I–248, scale 1:24,000. calcareous and micaceous; includes interbedded mudstone; 60–75 m; thickens westward to about 230 m in northwest Cedar City Blanding i89 Moir, G.J., 1974, Depositional environments and stratigraphy of the ———1957c, Photogeologic map of the Buckskin Gulch SW [now Pomeroy, J.S., 1958, Photogeologic map of the Johnson NW [now Mount possible equivalent of the Canaan Peak Formation thin bedded to massive, unit generally coarsens upwards Utah: Utah Geological and Mineral Survey Map 147, 2 sheets and text, corner of quadrangle. Depositional environments are River (Bowers, 1972). and steepens from slope-forming to cliff-forming beds; Cretaceous rocks, southwestern Utah: Los Angeles, University of Petrified Hollow] quadrangle, Kane County, Utah, and Coconino 11 p., scale 1:24,000. Carmel] quadrangle, Kane County, Utah: U.S. Geological Survey COLORADO River 8 Elsewhere, basal beds in some places are pink to varied: fluvial, lagoonal, brackish to marine shoreface, San CLIFFS California, Ph.D. dissertation, 316 p. County, Arizona: U.S. Geological Survey Miscellaneous Geologic Miscellaneous Geologic Investigations Map I–267, scale 1:24,000. locally contains variegated siltstone and mudstone in gin Juan Van Loenen, R.E., Sable, E.G., Blank, H.R., Jr., Turner, R.L., Kreidler, reddish-orange limestone breccia. Thickness of unit about foreshore and offshore(?) marine Vir MOUNTAIN uppermost part. Thickness about 30–50 m; lower contact CORAL PINK 3. Bowers, W.E., 1990, Geologic Map of Bryce Canyon National Park and Investigations Map I–244, scale 1:24,000. T.J., Zelten, J.E., and Cook, K.L., 1988a, Mineral resources of the 11. Unpublished geologic mapping by K.A. Sargent, 1979–80. 250 m; east of Sevier fault zone thickness is as little as 150 m Je Entrada Sandstone (Middle Jurassic)—Ledge-forming conformable and gradational. Depositional environments: 050100150 KILOMETERS SAND DUNES vicinity, southwestern Utah: U.S. Geological Survey Miscellaneous Hereford, Richard, 1988, Geology of the Cannonville quadrangle, Kane Canaan Mountain and the Watchman Wilderness Study Areas, Minard, J.P., 1957, Photogeologic map of the Buckskin Gulch SE [now STATE PARK Kk Kaiparowits(?) Formation (Upper Cretaceous)—Sandstone, sandstone and minor interbedded siltstone and claystone; alluvial floodplain and upper coastal plain Kanab 11 Investigations Series Map I–2108, scale 1:24,000; text, 15 p. and Garfield Counties, Utah: Utah Geological and Mineral Survey Washington and Kane Counties, Utah: U.S. Geological Survey Bulletin Pine Hollow Canyon] quadrangle, Kane County, Utah, and Coconino 050100 MILES VERMILION clay, mudstone, minor ironstone lenses and concretions mostly light to medium light gray, fine to medium grained, dms Shnabkaib Member (Lower Triassic)—Interbedded reddish- iAlt. 4. Goode, H.D., 1973a, Preliminary geologic map of the Bald Knoll Open-File Report OFR–142, 1 sheet and text, 17 p., scale 1:24,000. 1746–A, 26 p. County, Arizona: U.S. Geological Survey Miscellaneous Geologic INDEX MAP SHOWING LOCATION OF KANAB MOOUITH 89 BUCKSKIN and limestone-clast conglomerate. Sandstone; subarkose quartzose, round to subround; moderately indurated, with brown, tan, and yellowish-gray, earthy-weathering MOUNTAINS × 37˚00' quadrangle, Utah: U.S. Geological Survey Miscellaneous Field Studies Orkild, P.P., 1957, Photogeologic map of the Rainbow Point SE [now Deer Van Loenen, R.E., Sable, E.G., Blank, H.R., Jr., Barton, H.N., Cook, K.L., Investigations Map I–260, scale 1:24,000. 30´ 60´ QUADRANGLE

INDEX MAP SHOWING MAIN SOURCES OF GEOLOGIC DATA

GEOLOGIC MAP OF THE KANAB 30´ × 60´ QUADRANGLE, UTAH AND ARIZONA

By Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government E.G. Sable and Richard Hereford For sale by U.S. Geological Survey Information Services, Box 25286, Federal Center, Denver, CO 80225; 1-888-ASK-USGS Printed on recycled paper 2004 A PDF file and GIS files for this map are available at http://pubs.usgs.gov/imap/2655/