Analysis of the Lithic Debitage from the Older-Than-Clovis
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ANALYSIS OF THE LITHIC DEBITAGE FROM THE OLDER-THAN-CLOVIS STRATIGRAPHIC LAYERS OF THE GAULT SITE, TEXAS by Jennifer L. Gandy, B.A. A thesis submitted to the Graduate Council of Texas State University in partial fulfillment of the requirements for the degree of Master of Arts with a Major in Anthropology December 2013 Committee Members: C. Britt Bousman, Chair Michael B. Collins Stephen L. Black COPYRIGHT by Jennifer L. Gandy 2013 FAIR USE AND AUTHOR’S PERMISSION STATEMENT Fair Use This work is protected by the Copyright Laws of the United States (Public Law 94-553, section 107). Consistent with fair use as defined in the Copyright Laws, brief quotations from this material are allowed with proper acknowledgment. Use of this material for financial gain without the author’s express written permission is not allowed. Duplication Permission As the copyright holder of this work I, Jennifer L. Gandy, authorize duplication of this work, in whole or in part, for educational or scholarly purposes only. DEDICATION To my parents, Edith and Paul Gandy, for all their love and encouragement. ACKNOWLEDGMENTS I would like to thank Dr. Michael Collins and Dr. Britt Bousman for always taking time out of their busy schedules to talk with me, and for helping me to think through problems and to see things in a different light. I am grateful for all of their help in teaching me how to run statistical analyses and in how to interpret statistical results. Also, I would like thank Dr. Stephen Black and Dr. Kent Reilly for their kind words of encouragement in all my work and for always making me smile. Thank you all for making my time at Texas State University memorable and enjoyable. Additionally, I would like to thank everyone at the Gault Project laboratory at Texas State. I am grateful to Nancy Littlefield, Tom Williams, Sergio Ayala, and Dr. Clark Wernecke, who all shared their time, work, and laughter with me. Thank you all for patiently helping me by reading over my numerous drafts and for helping me to gather information and images for my thesis. Further, I would like to thank my friends and classmates. Thanks go to Robert Lassen and Anastasia Gilmer for their encouragement and for always being willing to listen to me and to help me find resources for my work, even when they were busy with their own dissertation and thesis, respectively. Special thanks go to Jennifer Anderson for always taking time to share thoughts, laughter, and a cup of coffee with me. Her encouragement and understanding truly helped me make it through each step in the process of completing this thesis and in earning my Master’s degree. v Finally, I thank my family for all of their support, for always believing in me, and for helping me at every point in my journey. Thank you for your unconditional love and willingness to push me to be the best I can be. vi TABLE OF CONTENTS Page ACKNOWLEDGMENTS ...................................................................................................v LIST OF TABLES ............................................................................................................. ix LIST OF FIGURES ......................................................................................................... xiv CHAPTER I. INTRODUCTION ...............................................................................................1 Goals of this Study .......................................................................................1 Chapter Outline ............................................................................................2 II. BACKGROUND ................................................................................................4 Acceptance of the Earliest Human Occupations of the Americas ...............4 The Gault Site ............................................................................................15 Area 15 and the Stratigraphic Integrity of the Gault Site ..........................19 Debitage Analysis: What is debitage, how is it analyzed, and why? .........28 III. METHODS .....................................................................................................33 Materials and Preparations for Analysis ....................................................33 Attributes and Measurements ....................................................................34 Statistical Analyses ....................................................................................41 IV. RESULTS .......................................................................................................42 Entire Sample .............................................................................................42 Flake Types ................................................................................................48 Normal Flakes ................................................................................48 Biface Thinning Flakes ..................................................................51 Sequent Flakes ...............................................................................55 Blades .............................................................................................57 Other Flakes ...................................................................................58 vii Cluster Analyses ........................................................................................64 Scatterplots and Linear Regression ............................................................64 Spatial Distribution of Flakes ....................................................................68 V. DISCUSSION ..................................................................................................75 Flake Patterns .............................................................................................75 OTC Technology .......................................................................................80 Lithic Raw Materials: Local or Exotic? .....................................................83 Tentative Comparison with Gault Clovis Biface Technology ...................84 Flake Spatial Distribution: Flake Locations by Unit .................................88 Flake Spatial Distribution: Flake Locations by Elevation .........................90 VI. CONCLUSIONS ............................................................................................92 APPENDIX A: DEFINITIONS AND IMAGES ...............................................................97 APPENDIX B: METRIC AND STATISTICAL TABLES .............................................115 APPENDIX C: REGRESSION OUTPUT FIGURES .....................................................148 APPENDIX D: SPATIAL ANALYSIS DATA TABLES ..............................................164 LITERATURE CITED ....................................................................................................168 viii LIST OF TABLES Table Page 1. Flake counts and percentages of flake condition ..........................................................42 2. Metrics of the entire sample ..........................................................................................43 3. Metrics of the whole flakes ...........................................................................................43 4. Metrics of the total broken flakes .................................................................................44 5. Metrics of only the transversely broken flakes .............................................................44 6. Metrics of only the longitudinally broken flakes ..........................................................45 7. Flake counts and percentages by flake types ................................................................48 A-1. Flake condition .........................................................................................................98 A-2. Flake terminations ....................................................................................................99 A-3. Flake types ..............................................................................................................101 A-4. Dorsal cortex ...........................................................................................................104 A-5. Bulb of percussion ..................................................................................................105 A-6. Type of platform .....................................................................................................106 A-7. Lipping ....................................................................................................................108 A-8. Platform traits .........................................................................................................109 A-9. Thermal damage .....................................................................................................111 A-10. Metrics ..................................................................................................................112 ix B-1. Chi-square: flake type by terminations ...................................................................116 B-2. Chi-square: flake type by bulb of percussion .........................................................116 B-3. Chi-square: flake type by lipping ............................................................................117 B-4. Chi-square: flake type by the amount of dorsal cortex ...........................................117 B-5. Chi-square: flake type by thermal damage .............................................................118