Quail Creek Reservoir
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Tetrapod Biostratigraphy and Biochronology of the Triassic–Jurassic Transition on the Southern Colorado Plateau, USA
Palaeogeography, Palaeoclimatology, Palaeoecology 244 (2007) 242–256 www.elsevier.com/locate/palaeo Tetrapod biostratigraphy and biochronology of the Triassic–Jurassic transition on the southern Colorado Plateau, USA Spencer G. Lucas a,⁎, Lawrence H. Tanner b a New Mexico Museum of Natural History, 1801 Mountain Rd. N.W., Albuquerque, NM 87104-1375, USA b Department of Biology, Le Moyne College, 1419 Salt Springs Road, Syracuse, NY 13214, USA Received 15 March 2006; accepted 20 June 2006 Abstract Nonmarine fluvial, eolian and lacustrine strata of the Chinle and Glen Canyon groups on the southern Colorado Plateau preserve tetrapod body fossils and footprints that are one of the world's most extensive tetrapod fossil records across the Triassic– Jurassic boundary. We organize these tetrapod fossils into five, time-successive biostratigraphic assemblages (in ascending order, Owl Rock, Rock Point, Dinosaur Canyon, Whitmore Point and Kayenta) that we assign to the (ascending order) Revueltian, Apachean, Wassonian and Dawan land-vertebrate faunachrons (LVF). In doing so, we redefine the Wassonian and the Dawan LVFs. The Apachean–Wassonian boundary approximates the Triassic–Jurassic boundary. This tetrapod biostratigraphy and biochronology of the Triassic–Jurassic transition on the southern Colorado Plateau confirms that crurotarsan extinction closely corresponds to the end of the Triassic, and that a dramatic increase in dinosaur diversity, abundance and body size preceded the end of the Triassic. © 2006 Elsevier B.V. All rights reserved. Keywords: Triassic–Jurassic boundary; Colorado Plateau; Chinle Group; Glen Canyon Group; Tetrapod 1. Introduction 190 Ma. On the southern Colorado Plateau, the Triassic– Jurassic transition was a time of significant changes in the The Four Corners (common boundary of Utah, composition of the terrestrial vertebrate (tetrapod) fauna. -
The Geology of Quail Creek State Park Itself, the Park Is Surrounded by a Landscape of Enormous Geological and Human Interest
TT HH EE G E O L OO GG Y OO FF Q UU AA II LL C R E E K SS T A TT EE PP A R K T H E G E O L O G Y O F Q U A I L C R E E K S T A T E P A R K T H E GEOLO G Y O F Q UA IL CREEK STAT E PA R K by Robert F. Biek Introduction . 1 Layers of Rock. 3 Regional overview . 3 Moenkopi Formation . 4 Shnabkaib Member . 6 Upper red member . 7 Chinle Formation . 7 Shinarump Conglomerate Member . 7 Petrified Forest Member . 8 Surficial deposits . 9 Talus deposits . 9 Mixed river and slopewash deposits . 9 Landslides. 9 The Big Picture . 10 Geological Highlights . .14 Virgin anticline . .14 Faults . .14 Gypsum . .14 “Picture stone” . .15 Boulders from the Pine Valley Mountains . .16 Catastrophic failure of the Quail Creek south dike . .17 Acknowledgments . .19 References . .19 T H E G E O L O G Y O F Q U A I L C R E E K S T A T E P A R K I N T R O D U C T I O N The first thing most visitors to Quail Creek State Park notice, apart from the improbably blue and refreshing waters of the reservoir itself, are the brightly colored, layered rocks of the surrounding cliffs. In fact, Quail Creek State Park lies astride one of the most remarkable geologic features in southwest- ern Utah. The park lies cradled in the eroded core of the Virgin anticline, a long upwarp of folded rock that trends northeast through south-central Washington County. -
Earliest Jurassic U-Pb Ages from Carbonate Deposits in the Navajo Sandstone, Southeastern Utah, USA Judith Totman Parrish1*, E
https://doi.org/10.1130/G46338.1 Manuscript received 3 April 2019 Revised manuscript received 10 July 2019 Manuscript accepted 11 August 2019 © 2019 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY license. Published online 4 September 2019 Earliest Jurassic U-Pb ages from carbonate deposits in the Navajo Sandstone, southeastern Utah, USA Judith Totman Parrish1*, E. Troy Rasbury2, Marjorie A. Chan3 and Stephen T. Hasiotis4 1 Department of Geological Sciences, University of Idaho, P.O. Box 443022, Moscow, Idaho 83844, USA 2 Department of Geosciences, Stony Brook University, Stony Brook, New York 11794, USA 3 Department of Geology and Geophysics, University of Utah, 115 S 1460 E, Room 383, Salt Lake City, Utah 84112-0102, USA 4 Department of Geology, University of Kansas, 115 Lindley Hall, 1475 Jayhawk Boulevard, Lawrence, Kansas 66045-7594, USA ABSTRACT with the lower part of the Navajo Sandstone New uranium-lead (U-Pb) analyses of carbonate deposits in the Navajo Sandstone in across a broad region from southwestern Utah southeastern Utah (USA) yielded dates of 200.5 ± 1.5 Ma (earliest Jurassic, Hettangian Age) to northeastern Arizona (Blakey, 1989; Hassan and 195.0 ± 7.7 Ma (Early Jurassic, Sinemurian Age). These radioisotopic ages—the first re- et al., 2018). The Glen Canyon Group is under- ported from the Navajo erg and the oldest ages reported for this formation—are critical for lain by the Upper Triassic Chinle Formation, understanding Colorado Plateau stratigraphy because they demonstrate that initial Navajo which includes the Black Ledge sandstone (e.g., Sandstone deposition began just after the Triassic and that the base of the unit is strongly Blakey, 2008; Fig. -
USGS General Information Product
Geologic Field Photograph Map of the Grand Canyon Region, 1967–2010 General Information Product 189 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior DAVID BERNHARDT, Secretary U.S. Geological Survey James F. Reilly II, Director U.S. Geological Survey, Reston, Virginia: 2019 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit https://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Suggested citation: Billingsley, G.H., Goodwin, G., Nagorsen, S.E., Erdman, M.E., and Sherba, J.T., 2019, Geologic field photograph map of the Grand Canyon region, 1967–2010: U.S. Geological Survey General Information Product 189, 11 p., https://doi.org/10.3133/gip189. ISSN 2332-354X (online) Cover. Image EF69 of the photograph collection showing the view from the Tonto Trail (foreground) toward Indian Gardens (greenery), Bright Angel Fault, and Bright Angel Trail, which leads up to the south rim at Grand Canyon Village. Fault offset is down to the east (left) about 200 feet at the rim. -
Geologic Map of the Divide Quadrangle Washington County Utah
GEOLOGIC MAP OF THE DIVIDE QUADRANGLE, WASHINGTON COUNTY, UTAH by Janice M. Hayden This geologic map was funded by the Utah Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program, through Statemap Agreement No. 98HQAG2067. ISBN 1-55791-597-0 ,Ill MAP197 I"_.\\ Utah Geological Survey ..,, a division of 2004 Utah Department of Natural Resources STATE OF UTAH Olene S. Walker, Govenor DEPARTMENT OF NATURAL RESOURCES Robert Morgan, Executive Director UTAH GEOLOGICAL SURVEY Richard G. Allis, Director PUBLICATIONS contact Natural Resources Map/Bookstore 1594 W. North Temple telephone: 801-537-3320 toll-free: 1-888-UTAH MAP website: http://mapstore.utah.gov email: [email protected] THE UTAH GEOLOGICAL SURVEY contact 1594 W. North Temple, Suite 3110 Salt Lake City, UT 84116 telephone: 801-537-3300 website: http://geology.utah.gov Although this product represents the work of professional scientists, the Uah Department of Natural Resources, Utah Geological Survey, makes no warranty, expressed or implied, regarding its suitability for any particular use. The Utah Department of Natural Resources, Utah Geological Sur vey, shall not be liable under any circumstances for any direct, indirect, special, incidental, or consequential damages with respect to claims by users of this product. The views and conclusions contains in this document are those of the author and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Govemmenrt. The Utah Department of Natural Resources receives federal aid and prohibits discrimination on the basis of race, color, sex, age, national origin, or disability. For information or complaints regarding discrimination, contact Executive Director, Utah Department of Natural Resources, 1594 West North Temple #3710, Box 145610, Salt Lake City, UT 84JJ6-5610 or Equal Employment Opportunity Commission, 1801 L Street, MY, Wash ington DC 20507. -
Mineral Resources of the Canaan Mountain and the Watchman Wilderness Study Areas, Washington and Kane Counties, Utah
Mineral Resources of the Canaan Mountain and The Watchman Wilderness Study Areas, Washington and Kane Counties, Utah U.S. GEOLOGICAL SURVEY BULLETIN 1746-A r UTAH -.S***' f. Jf .^^^-^^ s^w^*2^ ^;»a**?P!P*l :rj^4^ ^S^P^ :"¥>. \ * .3 %- ^4- * ^ s CHAPTER A Mineral Resources of the Canaan Mountain and The Watchman Wilderness Study Areas, Washington and Kane Counties, Utah By R.E. VAN LOENEN, E.G. SABLE, H.R. BLANK, Jr., and R.L TURNER U.S. Geological Survey T.J. KREIDLER and J.E. ZELTEN U.S. Bureau of Mines K.L. COOK University of Utah U.S. GEOLOGICAL SURVEY BULLETIN 1746 MINERAL RESOURCES OF WILDERNESS STUDY AREAS-SOUTHWESTERN UTAH DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary U. S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE: 1988 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center Box 25425 Denver, CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Canaan Mountain and the Watchman Wilderness Study Areas, Washington and Kane Counties, Utah. (U.S. Geological Survey bulletin ; 1746-A) (Mineral resources of wilderness study areas southwestern Utah and part of adjacent Mohave County, Arizona ; ch. A) Bibliography: p. 1. Mines and mineral resources Utah Canaan Mountain Wilderness. 2. Mines and mineral resources Utah Watchman Wilderness. 3. Canaan Mountain Wilderness (Utah). 4. Watchman Wilderness (Utah) I. Van Loenen, Richard E. II. Series. III. Series: Mineral resources of wilderness study areas southwestern Utah and part of adjacent Mohave County, Arizona ; 1746-A. QE75.B9 no. -
Formations Between Southwestern Utah and Southern Nevada
Correlation of Upper Triassic and Triassic(P) Formations Between Southwestern Utah and Southern Nevada By RICHARD F. WILSON and JOHN H. STEWART CONTRIBUTIONS TO STRATIGRAPHY GEOLOGICAL SURVEY BULLETIN 1244-D Based on work done on behalf of the U.S. Atomic Energy Commission UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1967 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 15 cents CONTENTS Page Abstract_______-_____-__-__-_-_-___-__-____---_---__-__-___---_ Dl Introduction..-________________________________________________ 1 Stratigraphic terminology_________________________________________ 3 Moenkopi Formation._________________________________________ 7 Upper unit of Moenkopi(?) Formation___________________________ 8 Chinle Formation________________________________________________ 8 Shinarump Member_______________________________-_____-_____ 10 Petrified Forest Member and probable equivalent__________.-_-__ 11 Chinle Formation (restricted)-Glen Canyon Group contact _____________ 13 Glen Canyon Group and probable equivalents_.__________--___--____ 14 Moenave and Kayenta Formations and probable equivalents______ 14 Southwestern Utah________________________________________ 15 Southern Nevada________________________________________ 17 Navajo Sandstone and Aztec Sandstone__________________________ 18 References cited___________________________________________________ -
Tetrapod Biostratigraphy and Biochronology Across the Triassic-Jurassic Boundary in Northeastern Arizona
Heckert, A.B., and Lucas, S.G., eds., 2005, Vertebrate Paleontology in Arizona. New Mexico Museum of Natural History and Science Bulletin No. 29. 84 TETRAPOD BIOSTRATIGRAPHY AND BIOCHRONOLOGY ACROSS THE TRIASSIC-JURASSIC BOUNDARY IN NORTHEASTERN ARIZONA SPENCER G. LUCAS1, LAWRENCE H. TANNER2 and ANDREW B. HECKERT3 1New Mexico Museum of Natural History, 1801 Mountain Rd. N.W., Albuquerque, NM 87104-1375; 2Department of Biology, Le Moyne College, 1419 Salt Springs Road, Syracuse, NY, 13214; 3Department of Geology, Appalachian State University, ASU Box 32067, Boone, NC, 28608-2067 Abstract—Nonmarine fluvial, eolian and lacustrine strata of the Chinle and Glen Canyon groups in northeastern Arizona and adjacent areas preserve tetrapod body fossils and footprints that are one of the world’s most extensive tetrapod fossil records across the Triassic-Jurassic boundary. We organize these tetrapod fossils into five, time-successive biostratigraphic assemblages (in ascending order, Owl Rock, Rock Point, Dinosaur Canyon, Whitmore Point and Kayenta) that we assign to the (ascending order) Revueltian, Apachean, Wassonian and Dawan land-vertebrate faunachrons (LVF). In doing so, we redefine the Wassonian and the Dawan LVFs. The Apachean-Wassonian boundary approximates the Triassic-Jurassic boundary. This tetrapod biostratigraphy and biochronology of the Triassic-Jurassic transition on the southern Colorado Plateau confirms that non-crocodilian crurotarsan extinction closely corresponds to the end of the Triassic, and that a dramatic increase in dinosaur diversity, abundance and body size preceded the end of the Triassic. Keywords: Triassic, Jurassic, vertebrate, biostratigraphy, Arizona, Glen Canyon Gp, Moenave Fm INTRODUCTION 114o Gateway Lisbon Valley The Four Corners (common boundary of Utah, Colorado, UTAH 50 km COLORADO Arizona and New Mexico) sit in the southern portion of the Colo- rado Plateau (Fig. -
Paleornagnetism of the Moenave Formation: Implications for the Mesozoic North American Apparent Polar Wander Path
Paleornagnetism of the Moenave Formation: Implications for the Mesozoic North American apparent polar wander path Eric J. Ekstrand,* Robert F. Butler Department of Geosciences, University of Arizona, Tucson, Arizona 85721 ABSTRACT stones that were deposited in a fluvial environment and are exposed in the Previous syntheses of the Mesozoic North American apparent Vermilion Cliffs of northern Arizona and southern Utah (Wilson, 1958) polar wander (APW) path have suggested the presence of a sharp (Fig. 1). The Moenave Formation has been dated on the basis of occur- corner or cusp (the J-1 cusp) in the Late Triassic to Early Jurassic. rences of Early Jurassic palynomorphs in the Whitmore Point Member Paleomagnetic data from the Lower Jurassic (Sinemurian) Moenave (Peterson et al., 1977; Peterson and Pipiringos, 1979). Recent palynomor- Formation clarify details of this important feature in the APW path. A phic studies in the Moenave and Chinle Formations support previous age total of 220 oriented cores were collected from 31 levels in four strati- assignments and were summarized by Litwin (1986). The Dinosaur Can- graphic sections of the Moenave Formation in northern Arizona and yon Member is probably late (?) Hettangian to Sinemurian, and the southern Utah. Thermal demagnetization in multiple steps, generally Whitmore Point Member is Sinemurian to early Pliensbachian in age. On between 600 and 660 OC, was successful in revealing the characteristic the time scale of Harland et al. (1982), absolute age limits for the Moenave component of natural remanent magnetization at 23 sites. The paleo- would be approximately 200 to 210 Ma. magnetic pole is lat = 58.2ON, long = 51.9OE; radius of 95% confidence (ag5)= 4.5'. -
Signature Redacted for Privacy. Abstract Approved: "T/ Dr
AN ABSTRACT OF THE THESIS OF Daniel Glenn Carpenter for the degree ofMaster of Science in the Department of Geology presented onjj February 1989 Title: GEOLOGY OF THE NORTH MUDDY MOUNTAINS.CLARK COUNTY, NEVADA AND REGIONAL STRUCTURAL SYNTHESIS: FOLD-THRUST AND BASIN-RANGE STRUCTURE IN SOUTHERN NEVADA.SOUTHWEST UTAH, AND NORTHWEST ARIZONA Signature redacted for privacy. Abstract approved: "T/ Dr. R. S. Yeats The North Muddy Mountains are locatedin southern Nevada, about 65 km northeast of Las Vegasand near the eastern boundary of the Basin and Rangeprovince. The north-south-trending range block is bounded on theeast and west, respectively, by east- and west-dipping,high-angle normal faults. Sevier age contractional and Cenozoic age extensional structures are present in the range. The Summit thrust and Willow Tankthrust crop out, respectively, on the southwest and northeastsides of the North Muddy Mountains. A newly mapped thrustsegment connects the Summit and Willow Tank thrusts. It juxtaposed Jurassic on Cretaceous age rocks.The most recent displacement on the thrust is bracketed between95.8+1-3.5 Ma (age of youngest deformed rocks) and 93.1+/- 3.4 Ma (age of oldest overlying undefornied beds). These numbers indicate an Albian to Turonian(?) age rangefor the thrust. The Summit-Willow Tank thrust sheet waslater folded by a northwest-southeast-trending, southwest inclined foldtrain by displacement on the Arrowhead fault, aMiocefle and possibly younger(?) extensional structure. The oldest (Albian) synorogenicdeposits in the area contain exotic clasts of formations that werenot involved in local thrusting; the debris was transportedeastward from older thrust sheets. Younger (Cenoinanian) synorogenicbeds are composed of Mesozoic age clastsat the base of the section, grading to early paleozoic age clasts nearthe top (reverse clast stratigraphy). -
Position of the Triassic–Jurassic Boundary and Timing of the End-Triassic Extinctions on Land: Data from the Moenave Formation on the Southern Colorado Plateau, USA
Archived version from NCDOCKS Institutional Repository http://libres.uncg.edu/ir/asu/ Position of the Triassic–Jurassic boundary and timing of the end-Triassic extinctions on land: Data from the Moenave Formation on the southern Colorado Plateau, USA By: A.B. Heckert, S.G. Lucas, L.H. Tanner, L.L. Donohoo- Hurley, J.W. Geissman, H.W. Kozur, R.E. Weems Abstract Strata of the Moenave Formation on and adjacent to the southern Colorado Plateau in Utah–Arizona, U.S.A., represent one of the best known and most stratigraphically continuous, complete and fossiliferous terrestrial sections across the Triassic–Jurassic boundary. We present a synthesis of new biostratigraphic and magnetostratigraphic data collected from across the Moenave Formation outcrop belt, which extends from the St. George area in southwestern Utah to the Tuba City area in northern Arizona. These data include palynomorphs, conchostracans and vertebrate fossils (including footprints) and a composite polarity record based on four overlapping magnetostratigraphic sections. Placement of the Triassic–Jurassic boundary in strata of the Moenave Formation has long been imprecise and debatable, but these new data (especially the conchostracans) allow us to place the Triassic–Jurassic boundary relatively precisely in the middle part of the Whitmore Point Member of the Moenave Formation, stratigraphically well above the highest occurrence of crurotarsan body fossils or footprints. Correlation to marine sections based on this placement indicates that major terrestrial vertebrate extinctions preceded marine extinctions across the Triassic–Jurassic boundary and therefore were likely unrelated to the Central Atlantic Magmatic Province (CAMP) volcanism. A.B. Heckert, S.G. Lucas, L.H. -
St. George Dinosaur Tracksite
St. George Dinosaur Tracksite This world-class dinosaur tracksite was discovered in February 2000 about one mile east of downtown St. George in southwestern Utah. Over 1,000 tracks have been discovered so far within a 10-acre area. The tracks were dis- covered by Sheldon Johnson while leveling land on his Riverside Drive property. As he began moving large blocks of sandstone, he discovered bumps on their undersides that he recognized as dinosaur tracks. The tracks proved to be nearly perfectly preserved casts of footprints of some of the oldest Jurassic dinosaurs in Utah. This stunning tracksite includes details of claw marks, dew claws, foot pads, and skin impressions. In one trackway, a tail drag is evident. Ancient crocodile tracks, mud cracks, and diamond-shaped salt casts are also preserved at this site. Nearby, fossil plants and fish have been found. Most of the three-toed prints are 13 to 18 inches long (track name Eubrontes) and were made by a large, meat-eat- ing dinosaur. These dinosaurs could grow as large as 19 feet long and 61/2 feet tall and weigh 900 pounds. Other tracks include those of a slender, meat-eating dinosaur with prints 4 to 8 inches long (track name Grallator). The larger dinosaur is thought to be similar to the Dilophosaurus. The smaller dinosaur may be similar to the Megapnosaurus. Ancient lake environment These dinosaurs were congregating on the shores of a lake about 200 million years ago (Early Jurassic time). The lake, with large fish that the dinosaurs probably ate, and its shore with edible plants, must have been a good habitat for these dinosaurs as several episodes of track making are evident.