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7610005.Pdf (6.39 INFORMATION TO USERS This material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to . help you understand markings or patterns which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Paga(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. 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Xerox University Microfilms aoo Nona ZMb now Ann Arbor, Michigan 40106 76-10,005 MARCANTEL, Emily Laws, 1943- CONODONT BIOSTRATIGRAPHY AND SEDIMENTARY PETROLOGY OF THE GERSTER FORMATION (GUADALUPIAN) IN EAST CENTRAL NEVADA AND WEST CENTRAL UTAH. The Ohio State University, Ph.D., 1975 Geology Xerox University Microfilms, Ann Arbor. Michigan 48106 THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED. CONODONT BIOSTRATIGRAPHY AND SEDIMENTARY PETROLOGY OF THE GERSTER FORMATION (GUADALUPIAN) IN EAST CENTRAL NEVADA AND WEST CENTRAL UTAH DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Emily Laws Marcantel, B.A., M.S, ******* The Ohio State University 1975 Reading committee: Approved By Stig M. Bergstrom James W. Collinson Adviser £ Department of Geology Walter C. Sweet and Mineralogy ACKNOWLEDGMENTS I wish to express my appreciation to the following people: Professor James W. Collinson, who served as my adviser and assisted with field work; Professor Walter C. Sweet, who stimulated my interest in conodont systematics, and who, with Professor Stig M. Bergstrom, offered valuable advice and critically read the manuscript; Ms. Mary Baird, who assisted with field work and generously shared infor­ mation from her thesis project on the Kaibab Formation; Mr. Art W. Browning, Mr. Duncan Foley, Mr. Allen Young, and Mr. Dennis Zlatkin, who assisted in the field work; Ms. Kit Browning, Mr. Graham Larson, Mr. Jay Spielman, and Mr. Richard Thomas, who assisted with laboratory work; Mr. Robert Markley, who supervised part of the microphotog­ raphy and use of the scanning electron microscope; and Mr. Robert Wilkinson, who assisted in part of the micro­ photography and prepared most of the photographs. Profit­ able discussion regarding conodont systematics and related problems was carried on with Mr. John Carnes and Mr. John Croft at The Ohio State University and with colleagues at ii other institutions, particularly Ms. Laurel Babcock of University of Wisconsin, Professor Fred Behnken of Texas Tech University, Professor William Butler of Russell Sage College, Dr. Barry Perlmutter of New Jersey State College, Mr. Bruce Wardlaw of the Smithsonian Institution, and Mr. Frank Wind of Florida State University. Most importantly, I wish to thank my husband. Dr. Jon Marcantel of Shell Oil Company, who assisted me in the field and laboratory, and my children, Mike and Katie, for their patience during com­ pletion of this dissertation. This study is part of a project involving the Permian and Triassic Systems of the Cordilleran miogeosyncline, which was funded by National Science Foundation Grant GA-23904. Typing by Miss Kathy Gough and drafting by Mr. Robert Bartlett for the final copy were generously pro­ vided by Getty Oil Company, Houston, Texas. iii VITA April 5, 1943 ............. Born - Colunibus, Ohio 1966.... ...................B.A., The Ohio State University, Columbus, Ohio 1966.... ................... Summer Geologist, Shell Oil Company, New Orleans, Louisiana 1966.... ................... National Science Foundation Trainee, University of Texas, Austin, Texas 1967.... ................... Married - Jonathon Benning Marcantel 1967-1968 ........ Teaching Assistant and chevron Fellow, Louisiana State University, Baton Rouge, Louisiana 1968 ... M.S., Louisiana state University, Baton Rouge, Louisiana 1968-1970 ................ Geologist, United States Geological Survey, Denver, Colorado and Cleveland, Ohio 1970 .....................Son - Michael Ora 1971-1974 ................ Research Assistant, Teaching Assistant and National Science Foundation Fellow, The Ohio State University, Columbus, Ohio 1974.. ..................... Daughter - Catherine Amelia iv 1975 Geologist, Getty Oil Company, Exploration and Production Research Laboratory, Houston, Texas PAPERS AND PRESENTATIONS Marcantel, E. L. & Weiss, M. P., 1968, Colton Formation (Eocene, Fluviatile) and Associated Lacustrine Beds, Gunnison Plateau, Central Utah; Ohio Jour. Sci., v. 6 8 , no. 1, pp. 40-49. Marcantel, E. L., 1968, Paleoecology and Diagenetic Fabrics of a Lower Cretaceous Rudist Reef Complex in West- Central Texas, Louisiana State University, Baton Rouge, Louisiana, 120 p. (unpublished M.S. Thesis) Marcantel, E. L., 1969, The Skelly-Hobbs Rudist Reef Complex? Lower Cretaceous Shallow-Shelf Carbonates, West Central Texas, Guidebook, Am. Assoc. Petrol. Geol. Annual Meeting, April, 1969, pp. 19-39. Marcantel, E. L., 1973, Upper Permian Conodont Biostratig­ raphy of northeast Nevada and west central Utah; Geol. Soc. Am., Abstracts with Programs, North-Central Section, v. 5, no. 4, p. 334. Marcantel, E. L., 1974, Stratigraphy and Conodont Paleon­ tology of the Gerster Formation, Eastern Nevada and Western Utah in Permian and Triassic Biostratigraphy of the Central Cordilleran Miogeosyncline, J. W. Collinson, ed., Ohio State University Research Foun­ dation Final Report, pp. 32-41. FIELDS OF STUDY Major Field: Geology Studies in Carbonate Petrology. Professors Robert L. Folk and Clyde Moore Jr. Studies in Biostratigraphy and Paleontology. Professors James W. Collinson, Walter C. Sweet, Stig M. Bergstrom and Aurele LaRocque v TABLE OF CONTENTS Page ACKNOWLEDGMENTS ........................................ ii VITA ....................................................iv LIST OF TA B LE S ............................................ viii LIST OF FIGURES ......................................... ix LIST OF PLATES ......................................... xii INTRODUCTION ............................................ 1 Summary of Previous Work . ............. 1 Methods of Study ................................ 6 Chapter I. STRATIGRAPHY ................................ 9 Regional Setting ....................... 9 Stratigraphy of the Gerster and Related Formations ................. 11 II. CONODONT DISTRIBUTION AND BIOSTRATIGRAPHIC FRAMEWORK OF THE GERSTER FORMATION.... 28 III. DEPOSITIGNAL ENVIRONMENT AND CONODONT PALEOECOLOGY ................................ 41 IV. THE MONTELLO SECTION ...................... 65 V. AGE AND CORRELATION OF THE GERSTER FORMATION 70 A g e ...................................... 70 Correlations with other Formations . „ 73 Page VI. SYSTEMATIC PALEONTOLOGY ..................... 76 Anchignathodus Sweet ............ » . 79 Anchignathodus n. s p ............... 89 Ellisonia Muller .......... 98 Ellisonia n. s p ........................100 Neoqondolella Bender & Stoppel . 117 Neogondolella n. sp ................... 118 Neospathodus Mosher .................. 123 Neospathodus arcucristatus Clark & B e h n k e n ........................124 Neospathodus dlverqens (Bender & Stoppel) . 128 Xaniognathus Sweet .................. 130 Xaniognathus tribulosus (Clark & E t h i n g t o n ) ..................... 133 Unassigned A^? element . .............. 145 VII. CONCLUSIONS ..................................... 147 APPENDICES . 150 A - Measured Sections ............................ 150 B - Distribution of conodont elements ..... 161 PLATES ......................................................183 BIBLIOGRAPHY ............................................. 192 LIST OF TABLES Table Appendix B, Page 1. Conodont element distribution by sample - Butte Mountains ................... 162 2. Conodont element distribution by sample - Cherry Creek Range ............... 163 3. Conodont element distribution by sample - Confusion Range ................... 166 4. Conodont element distribution by sample - Currie Ravine ........................ 170 5. Conodont element distribution by sample - Gold H i l l ............................
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