Development of Oblique-Slip Basement-Cored Uplifts

Development of oblique- slip basement- cored uplifts: insights from the Kaibab uplift and from physical models Item Type text; Dissertation-Reproduction (electronic) Authors Tindall, Sarah Elizabeth Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 06/10/2021 20:17:47 Link to Item http://hdl.handle.net/10150/558760 DEVELOPMENT OF OBLIQUE-SLIP BASEMENT-CORED UPLIFTS: INSIGHTS FROM THE KAIBAB UPLIFT AND FROM PHYSICAL MODELS by Sarah Elizabeth Tindall Copyright © Sarah Elizabeth Tindall 2000 A Dissertation Submitted to the Faculty of the DEPARTMENT OF GEOSCIENCES In Partial Fulfillment of the Requirements For the Degree of DOCTOR OF PHILOSOPHY In the Graduate College THE UNIVERSITY OF ARIZONA 2000 2 THE UNIVERSITY OF ARIZONA ® GRADUATE COLLEGE As members of the Final Examination Committee, we certify that we have read the dissertation prepared by S a r a h f.t i T - i n ^ n ________________ entitled Development of Oblique-Slip Basement-Cored Uplifts:__________ Insights from the Kaibab Uplift and from Physical Models t it be accepted as fulfilling the dissertation requirement /fo ree of Doctor of Philosophy Date Date If ~ 3 ' Z-cTi/'L. Final approval and acceptance of this dissertation is contingent upon the candidate's submission of the final copy of the dissertation to the Graduate College. I hereby cefrtijfy that I have read this dissertation prepared under my direction^and recommend that it be accepted as fulfilling the dissertation requirement / 4- //- Go Dissertatibn^Director Date 3 STATEMENT BY AUTHOR This dissertation has been submitted in partial fulfillment of requirements of an advanced degree at The University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this dissertation are allowable without special permission, provided that accurate acknowledgment of source is made. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the copyright holder. Signed: 4 ACKNOWLEDGMENTS The people who have influenced my personal and professional experiences, not only during graduate school but throughout my life, are too numerous to name. If I were to attempt to make a list anyway, I would have a very difficult time deciding who should occupy the first position, and the last, and every one in between. So let me put it this way: A GIANT GRIN for most of you a small scowl for others but each of you has played an important role, and I thank you for it. 5 TABLE OF CONTENTS LIST OF ILLUSTRATIONS.......................................................................................... 8 LIST OF TABLES.............................................................................................................. 10 ABSTRACT.......................................................................................................................... 11 CHAPTER 1: INTRODUCTION................................................................................... 12 Statement of Problem.................................................................................................. 12 Previous W ork...............................................................................................................15 Explanation of Dissertation Format........................................................................ 19 CHAPTER 2: PRESENT STUDY................................................................................. 22 Major Findings............................................................................................................. 22 Behind The Scenes..................................................................................................... 28 REFERENCES.................................................................................................................... 33 APPENDIX A: MONOCLINE DEVELOPMENT BY OBLIQUE- SLIP FAULT-PROPAGATION FOLDING: THE EAST KAIBAB MONOCLINE, COLORADO PLATEAU, UTAH....................................................42 Abstract.............................................. 42 Background....................................................................................................................43 Monoclines as Drape Folds..................................................................................43 Monoclines as Fault Propagation Folds........................................................... 44 Importance of Oblique Deformation.................................................................. 46 Geologic Setting............................................................................................................ 48 Structural Data and Observations...........................................................................55 Domain 1 ...................................................................................................................55 Domain 2 ...................................................................................................................61 Domain 3 ...................................................................................................................64 Domain 4 ...................................................................................................................69 Summary of Field Observations...............................................................................73 Discussion....................................................................................................................... 76 Conclusions.....................................................................................................................84 Acknowledgements.......................................................................................................85 References....................................................................................................................... 86 APPENDIX B: THE COCKSCOMB SEGMENT OF THE EAST KAIBAB MONOCLINE: TAKING THE STRUCUTRAL PLUNGE................ 90 Abstract........................................................................................................................... 90 Introduction................................................................................................................... 91 6 TABLE OF CONTENTS - Continued Background.................................................................................................................. 95 Regional Setting......................................................................................................95 The Cockscomb....................................................................................................... 99 Structural Roots.......................................................................................................100 A Visual Tour.............................................................................................................. 102 Structural Observations..............................................................................................108 Northward Plunge...................................................................................................110 Down-Plunge Viewing........................................................................................... 112 Fault Tip Zone.........................................................................................................114 Oblique Deformation..............................................................................................116 Fault Slip Gradient............................................................................................... 121 Fault-Propagation Folding...................................................................................123 Summary................................................................................................................... 126 Conclusions.....................................................................................................................127 Acknowledgments.........................................................................................................130 References.......................................................................................................................131 APPENDIX C: DECIPHERING RIEDEL PATTERNS IN OBLIQUE SHEAR ZONES.............................................................................................135 Abstract........................................................................................................................... 135 Introduction................................................................................................................... 136 Riedel Shear Zones................................................................................................. 136 Riedel Geometry and Oblique Deformation...................................................... 140 The East Kaibab Shear Zone.....................................................................................144 Geologic Setting.......................................................................................................144 Oblique Shear Zone...............................................................................................

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