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USGS Water-Resources Investigations Report 97-4133
HYDROGEOLOGIC FRAMEWORK AND GEOCHEMISTRY OF THE EDWARDS AQUIFER SALINE-WATER ZONE, SOUTH-CENTRAL TEXAS U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 97–4133 FRESHWATER ZONE SALINE-WATER ZONE Prepared in cooperation with the EDWARDS AQUIFER AUTHORITY and SAN ANTONIO WATER SYSTEM HYDROGEOLOGIC FRAMEWORK AND GEOCHEMISTRY OF THE EDWARDS AQUIFER SALINE-WATER ZONE, SOUTH-CENTRAL TEXAS By George E. Groschen and Paul M. Buszka U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 97–4133 Prepared in cooperation with the EDWARDS AQUIFER AUTHORITY and SAN ANTONIO WATER SYSTEM Austin, Texas 1997 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Acting Director Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. For additional information write to: Copies of this report can be purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Branch of Information Services 8011 Cameron Rd. Box 25286 Austin, TX 78754–3898 Denver, CO 80225–0286 ii CONTENTS Abstract ................................................................................................................................................................................ 1 Introduction .......................................................................................................................................................................... 1 Purpose and Scope ................................................................................................................................................... -
Glenrose.Pdf
LÉXICO ESTRATIGRÁFICO DE MÉXICO Glen Rose, Formación...........................................................Cretácico Temprano (Albiano) Referencia(s): Hill, R.T., 1891, The Comanche series of the Texas-Arkansas region: Geological Society of America Bulletin, v. 2, 503-528. Barnes, V.E., 1967, Geologic atlas of Texas, Sherman Sheet; Walter Scott Adkins memorial edition: University of Texas-Austin, Bureau of Economic Geology, 1 sheet, scale 1:250,000. Historia nomenclatural de la unidad: Hill (1891 en GEOLEX, 2007) utilizó el nombre de capas Glen Rose para diferenciar la parte superior del Grupo Trinity al referirse a las rocas que están expuestas a lo largo del Río Paluxy en las cercanías del poblado Glen Rose, en el Condado de Somerwell, Texas, Estados Unidos. Posteriormente, Freeman (1964 en GEOLEX, 2007) sustituye el término de capas por el de caliza Glen rose para una secuencia que aflora a lo largo del Río Grande en los Condados de Terrel y Brewster, Texas. Finalmente, Barnes (1967 en GEOLEX, 2007) es quien le da el rango de formación a dicha unidad. Localidad tipo: Se encuentra ubicada a lo largo del Río Paluxy en las inmediaciones del poblado de Glen Rose en el condado de Somerwell Texas, Estados Unidos (Hill, 1891). Descripción litológica: Esta formación consiste en gran parte de estratos de caliza, caliza arenosa, argilacea, alternando con estratos delgados de arcilla arenosa, arenisca y marga, los cuáles muestran diferente espesor, hacia la cima de dicha unidad la caliza es ligeramente más arenosa, también contiene material -
Early Cretaceous (Albian) Decapods from the Glen Rose and Walnut Formations of Texas, USA
Bulletin of the Mizunami Fossil Museum, no. 42 (2016), p. 1–22, 11 fi gs., 3 tables. © 2016, Mizunami Fossil Museum Early Cretaceous (Albian) decapods from the Glen Rose and Walnut formations of Texas, USA Carrie E. Schweitzer*, Rodney M. Feldmann**, William L. Rader***, and Ovidiu Fran㶥escu**** *Department of Geology, Kent State University at Stark, 6000 Frank Ave. NW, North Canton, OH 44720 USA <[email protected]> **Department of Geology, Kent State University, Kent, OH 44242 USA ***8210 Bent Tree Road, #219, Austin, TX 78759 USA ****Division of Physical and Computational Sciences, University of Pittsburgh Bradford, Bradford, PA 16701 USA Abstract Early Cretaceous (Albian) decapod crustaceans from the Glen Rose Limestone and the Walnut Formation include the new taxa Palaeodromites xestos new species, Rosadromites texensis new genus, new species, Karyosia apicava new genus new species, Aetocarcinus new genus, Aetocarcinus muricatus new species, and the new combinations Aetocarcinus roddai (Bishop, 1983), Necrocarcinus pawpawensis (Rathbun, 1935) and Necrocarcinus hodgesi (Bishop, 1983). These two formations have yielded a much less diverse decapod fauna than the nearly coeval and proximally deposited Pawpaw Formation. Paleoenvironment is suggested as a controlling factor in the decapod diversity of these units. Key words: Brachyura, Nephropidae, Dromiacea, Raninoida, Etyioidea, North America Introduction deposited in the shallow waters of a broad carbonate platform. Deposition occurred on the southeastern flank of Late Early Cretaceous decapod faunas from the Gulf the Llano Uplift and, on the seaward margin to the Coastal Plain of North America have been well reported northwest, behind the Stuart City Reef Trend. Coral and and described since the early part of the twentieth century rudist reefs, algal beds, extensive ripple marks, evaporites, (Rathbun, 1935; Stenzel, 1945). -
SPRING 1963 Bulletin 4 BURR A. SILVER
SPRING 1963 Bulletin 4 The Bluehonnet Lake Waco Formation {Upper Central Lagoonal Deposit BURR A. SILVER thinking is more important than elaborate equipment-" Frank Carney, Ph.D. Professor of Geology Baylor University 1929-1934 Objectives of Geological at Baylor The of a geologist in a university covers but a few years; his education continues throughout his active life. The purposes of training geologists at Baylor University are to provide a sound basis of un derstanding and to foster a truly geological point of view, both of which are essential for continued professional growth. The staff considers geology to be unique among sciences since it is primarily a field science. All geologic research including that done in laboratories must be firmly supported by field observations. The student is encouraged to develop an inquiring objective attitude and to examine critically all geological concepts and principles. The development of a mature and professional attitude toward geology and geological research is a principal concern of the department. PRESS WACO, TEXAS BAYLOR GEOLOGICAL STUDIES BULLETIN NO. 4 The Member, Lake Waco Formation {Upper Central Texas - - A Lagoonal Deposit BURR A. SILVER BAYLOR UNIVERSITY Department of Geology Waco, Texas Spring, 1963 Baylor Geological Studies EDITORIAL STAFF F. Brown, Jr., Ph.D., Editor stratigraphy, paleontology O. T. Hayward, Ph.D., Adviser stratigraphy-sedimentation, structure, geophysics-petroleum, groundwater R. M. A., Business Manager archeology, geomorphology, vertebrate paleontology James W. Dixon, Jr., Ph.D. stratigraphy, paleontology, structure Walter T. Huang, Ph.D. mineralogy, petrology, metallic minerals Jean M. Spencer, B.S., Associate Editor Bulletin No. 4 The Baylor Geological Studies Bulletin is published Spring and Fall, by the Department of Geology at Baylor University. -
Evaluation of the Depositional Environment of the Eagle Ford
Louisiana State University LSU Digital Commons LSU Master's Theses Graduate School 2012 Evaluation of the depositional environment of the Eagle Ford Formation using well log, seismic, and core data in the Hawkville Trough, LaSalle and McMullen counties, south Texas Zachary Paul Hendershott Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_theses Part of the Earth Sciences Commons Recommended Citation Hendershott, Zachary Paul, "Evaluation of the depositional environment of the Eagle Ford Formation using well log, seismic, and core data in the Hawkville Trough, LaSalle and McMullen counties, south Texas" (2012). LSU Master's Theses. 863. https://digitalcommons.lsu.edu/gradschool_theses/863 This Thesis is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Master's Theses by an authorized graduate school editor of LSU Digital Commons. For more information, please contact [email protected]. EVALUATION OF THE DEPOSITIONAL ENVIRONMENT OF THE EAGLE FORD FORMATION USING WELL LOG, SEISMIC, AND CORE DATA IN THE HAWKVILLE TROUGH, LASALLE AND MCMULLEN COUNTIES, SOUTH TEXAS A Thesis Submitted to the Graduate Faculty of the Louisiana State University Agricultural and Mechanical College in partial fulfillment of the requirements for degree of Master of Science in The Department of Geology and Geophysics by Zachary Paul Hendershott B.S., University of the South – Sewanee, 2009 December 2012 ACKNOWLEDGEMENTS I would like to thank my committee chair and advisor, Dr. Jeffrey Nunn, for his constant guidance and support during my academic career at LSU. -
Mollusks from the Pepper Shale Member of the Woodbine Formation Mclennan County, Texas
Mollusks From the Pepper Shale Member of the Woodbine Formation McLennan County, Texas GEOLOGICAL SURVEY PROFESSIONAL PAPER 243-E Mollusks From the Pepper Shale Member of the Woodbine Formation McLennan County, Texas By LLOYD WILLIAM STEPHENSON SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY, 1952, PAGES 57-68 GEOLOGICAL SURVEY PROFESSIONAL PAPER 243-E Descriptions and illustrations of new species offossils of Cenomanian age UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1953 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - Price 25 cents (paper cover) CONTENTS Page Abstract________________________________________________________________ 57 Historical sketch__-___-_-__--__--_l________________-__-_-__---__--_-______ 57 Type section of the Pepper shale member.____________________________________ 58 Section of Pepper shale at Haunted Hill._______________-____-__-___---_------- 58 Systematic descriptions._______.._______________-_-__-_-_-____---__-_-_-_----_ 59 Pelecypoda_ ________________________________________________________ 59 Gastropoda.______-____-_-_____________--_____-___--__-___--__-______ 64 Cephalopoda-_______-_______________________-___--__---_---_-__-— 65 References......___________________________________________________________ 65 Index.__________________________________________________ 67 ILLUSTRATIONS Plate 13. Molluscan fossils, mainly from the Pepper shale__________ -
Late Cretaceous and Tertiary Burial History, Central Texas 143
A Publication of the Gulf Coast Association of Geological Societies www.gcags.org L C T B H, C T Peter R. Rose 718 Yaupon Valley Rd., Austin, Texas 78746, U.S.A. ABSTRACT In Central Texas, the Balcones Fault Zone separates the Gulf Coastal Plain from the elevated Central Texas Platform, comprising the Hill Country, Llano Uplift, and Edwards Plateau provinces to the west and north. The youngest geologic for- mations common to both regions are of Albian and Cenomanian age, the thick, widespread Edwards Limestone, and the thin overlying Georgetown, Del Rio, Buda, and Eagle Ford–Boquillas formations. Younger Cretaceous and Tertiary formations that overlie the Edwards and associated formations on and beneath the Gulf Coastal Plain have no known counterparts to the west and north of the Balcones Fault Zone, owing mostly to subaerial erosion following Oligocene and Miocene uplift during Balcones faulting, and secondarily to updip stratigraphic thinning and pinchouts during the Late Cretaceous and Tertiary. This study attempts to reconstruct the burial history of the Central Texas Platform (once entirely covered by carbonates of the thick Edwards Group and thin Buda Limestone), based mostly on indirect geological evidence: (1) Regional geologic maps showing structure, isopachs and lithofacies; (2) Regional stratigraphic analysis of the Edwards Limestone and associated formations demonstrating that the Central Texas Platform was a topographic high surrounded by gentle clinoform slopes into peripheral depositional areas; (3) Analysis and projection -
Map Showing Geology and Hydrostratigraphy of the Edwards Aquifer Catchment Area, Northern Bexar County, South-Central Texas
Map Showing Geology and Hydrostratigraphy of the Edwards Aquifer Catchment Area, Northern Bexar County, South-Central Texas By Amy R. Clark1, Charles D. Blome2, and Jason R. Faith3 Pamphlet to accompany Open-File Report 2009-1008 1Palo Alto College, San Antonio, TX 78224 2U.S. Geological Survey, Denver, CO 80225 3U.S. Geological Survey, Stillwater, OK 74078 U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY U.S. Department of the Interior DIRK KEMPTHORNE, Secretary U.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Denver, Colorado: 2009 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Suggested citation: Clark, A.R., Blome, C.D., and Faith, J.R, 2009, Map showing the geology and hydrostratigraphy of the Edwards aquifer catchment area, northern Bexar County, south- central Texas: U.S. Geological Survey Open-File Report 2009-1008, 24 p., 1 pl. 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 report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. 2 Contents Page Introduction……………………………………………………………………….........……..…..4 Physical Setting…………………………………………………………..………….….….….....7 Stratigraphy……………..…………………………………………………………..….…7 Structural Framework………………...……….……………………….….….…….……9 Description of Map Units……………………………………………………….…………...….10 Summary……………………………………………………………………….…….……….....21 References Cited………………………………………….…………………………...............22 Figures 1. -
An Early Bothremydid from the Arlington Archosaur Site of Texas Brent Adrian1*, Heather F
www.nature.com/scientificreports OPEN An early bothremydid from the Arlington Archosaur Site of Texas Brent Adrian1*, Heather F. Smith1, Christopher R. Noto2 & Aryeh Grossman1 Four turtle taxa are previously documented from the Cenomanian Arlington Archosaur Site (AAS) of the Lewisville Formation (Woodbine Group) in Texas. Herein, we describe a new side-necked turtle (Pleurodira), Pleurochayah appalachius gen. et sp. nov., which is a basal member of the Bothremydidae. Pleurochayah appalachius gen. et sp. nov. shares synapomorphic characters with other bothremydids, including shared traits with Kurmademydini and Cearachelyini, but has a unique combination of skull and shell traits. The new taxon is signifcant because it is the oldest crown pleurodiran turtle from North America and Laurasia, predating bothremynines Algorachelus peregrinus and Paiutemys tibert from Europe and North America respectively. This discovery also documents the oldest evidence of dispersal of crown Pleurodira from Gondwana to Laurasia. Pleurochayah appalachius gen. et sp. nov. is compared to previously described fossil pleurodires, placed in a modifed phylogenetic analysis of pelomedusoid turtles, and discussed in the context of pleurodiran distribution in the mid-Cretaceous. Its unique combination of characters demonstrates marine adaptation and dispersal capability among basal bothremydids. Pleurodira, colloquially known as “side-necked” turtles, form one of two major clades of turtles known from the Early Cretaceous to present 1,2. Pleurodires are Gondwanan in origin, with the oldest unambiguous crown pleurodire dated to the Barremian in the Early Cretaceous2. Pleurodiran fossils typically come from relatively warm regions, and have a more limited distribution than Cryptodira (hidden-neck turtles)3–6. Living pleurodires are restricted to tropical regions once belonging to Gondwana 7,8. -
Pterosaur Distribution in Time and Space: an Atlas 61
Zitteliana An International Journal of Palaeontology and Geobiology Series B/Reihe B Abhandlungen der Bayerischen Staatssammlung für Pa lä on to lo gie und Geologie B28 DAVID W. E. HONE & ERIC BUFFETAUT (Eds) Flugsaurier: pterosaur papers in honour of Peter Wellnhofer CONTENTS/INHALT Dedication 3 PETER WELLNHOFER A short history of pterosaur research 7 KEVIN PADIAN Were pterosaur ancestors bipedal or quadrupedal?: Morphometric, functional, and phylogenetic considerations 21 DAVID W. E. HONE & MICHAEL J. BENTON Contrasting supertree and total-evidence methods: the origin of the pterosaurs 35 PAUL M. BARRETT, RICHARD J. BUTLER, NICHOLAS P. EDWARDS & ANDREW R. MILNER Pterosaur distribution in time and space: an atlas 61 LORNA STEEL The palaeohistology of pterosaur bone: an overview 109 S. CHRISTOPHER BENNETT Morphological evolution of the wing of pterosaurs: myology and function 127 MARK P. WITTON A new approach to determining pterosaur body mass and its implications for pterosaur fl ight 143 MICHAEL B. HABIB Comparative evidence for quadrupedal launch in pterosaurs 159 ROSS A. ELGIN, CARLOS A. GRAU, COLIN PALMER, DAVID W. E. HONE, DOUGLAS GREENWELL & MICHAEL J. BENTON Aerodynamic characters of the cranial crest in Pteranodon 167 DAVID M. MARTILL & MARK P. WITTON Catastrophic failure in a pterosaur skull from the Cretaceous Santana Formation of Brazil 175 MARTIN LOCKLEY, JERALD D. HARRIS & LAURA MITCHELL A global overview of pterosaur ichnology: tracksite distribution in space and time 185 DAVID M. UNWIN & D. CHARLES DEEMING Pterosaur eggshell structure and its implications for pterosaur reproductive biology 199 DAVID M. MARTILL, MARK P. WITTON & ANDREW GALE Possible azhdarchoid pterosaur remains from the Coniacian (Late Cretaceous) of England 209 TAISSA RODRIGUES & ALEXANDER W. -
Carbonate Factory Response and Recovery After Ocean Anoxic Event 1A, Pearsall Formation, Central Texas
Copyright by Esben Skjold Pedersen 2020 The Thesis Committee for Esben Skjold Pedersen Certifies that this is the approved version of the following Thesis: Carbonate Factory Response and Recovery after Ocean Anoxic Event 1a, Pearsall Formation, Central Texas APPROVED BY SUPERVISING COMMITTEE: Charles Kerans, Supervisor Toti E. Larson, Co-Supervisor Daniel O. Breecker Carbonate Factory Response and Recovery after Ocean Anoxic Event 1a, Pearsall Formation, Central Texas by Esben Skjold Pedersen Thesis Presented to the Faculty of the Graduate School of The University of Texas at Austin in Partial Fulfillment of the Requirements for the Degree of Master of Science in Geological Sciences The University of Texas at Austin August 2020 Dedication To my parents for their endless support. To my sister, aunt, and uncle for opening my eyes to the world of the geological sciences. Acknowledgements Firstly, I would like to thank my co-supervisors, Charlie Kerans and Toti Larson, for the opportunity to continue my education as a graduate student at the University of Texas at Austin, and their wisdom both within and outside of the realm of geoscience. I would also like to thank Dan Breecker for serving on my committee, and for his advice during my time at UT. I am grateful to Equinor for investing in my research and education in the geological sciences while as a graduate student. I would like to thank Rob Forkner in particular, for his guidance and direction. I would like to thank the Staff at the Bureau of Economic Geology, including Nathan Ivicic, Brandon Williamson, and Rudy Lucero for their help and problem solving in the core warehouse, especially during COVID-19 restrictions, and to Evan Sivil for his help with pXRF dataset acquisition and guidance. -
Albian Rudist Biostratigraphy (Bivalvia), Comanche Shelf to Shelf Margin, Texas
Carnets Geol. 16 (21) Albian rudist biostratigraphy (Bivalvia), Comanche shelf to shelf margin, Texas Robert W. SCOTT 1, 2 2 Yulin WANG 2 Rachel HOJNACKI Yulin WANG 3 Xin LAI 4 Highlights • Barremian-Albian caprinids biostratigraphic zones are revised and integrated with ammonites and benthic foraminifers. • New caprinid rudist species are the key to revising long-held correlations of Albian strata on the Co- manche shelf, Texas. • On the San Marcos Arch, central Texas, the shallow shelf Person Formation is the upper unit of the Fredericksburg Group. • The Person underlies the basal Washita Group sequence boundary Al Sb Wa1 and the Georgetown Formation. Abstract: Rudists were widespread and locally abundant carbonate producers on the Early Cretaceous Comanche Shelf from Florida to Texas, and on Mexican atolls. As members of the Caribbean Biogeogra- phic Province, their early ancestors emigrated from the Mediterranean Province and subsequently evol- ved independently. Comanchean rudists formed biostromes and bioherms on the shelf interior and at the shelf margin. Carbonate stratigraphic units of the Comanche Shelf record rudist evolution during the Barremian through the Albian ages and an established zonal scheme is expanded. This study documents new Albian rudist occurrences from the Middle-Upper Albian Fredericksburg and Washita groups in Central and West Texas. Rudists in cores at and directly behind the shelf margin southeast of Austin and San Antonio, Texas, complement the rudist zonation that is integrated with ammonites and foraminifers. These new rudist data test long-held correlations of the Edwards Group with both the Fredericksburg and Washita groups based solely on lithologies. Rudist and foraminifer biostratigraphy indicate that the Edwards Group is coeval with the Fredericksburg not the Washita Group.