Identification of Activity Areas Through Lithic Analysis - the Longhorn Site (41KT53) in the Upper Brazos River Basin, Kent County, Texas
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Identification of Activity Areas Through Lithic Analysis - The Longhorn Site (41KT53) in the Upper Brazos River Basin, Kent County, Texas by Kathryn Mira Smith, B.S. A Thesis In Anthropology Submitted to the Graduate Faculty of Texas Tech University in Partial Fulfillment of the Requirements for the Degree of Master of Arts Accepted Dr. Brett Houk Co-Chair Dr. Eileen Johnson Co-Chair Dr. Tamra Walter Ralph Ferguson Dean of the Graduate School December 2010 © 2010 Kathryn Mira Smith Texas Tech University, Kathryn Smith, December 2010 ACKNOWLEDGMENTS First and foremost, I would like to thank my committee members for their advice and assistance throughout this project: Dr. Brett A. Houk, chair; Dr. Eileen G. Johnson, co-chair; and Dr. Tamra L. Walter, member. Additional thanks goes to the Museum of Texas Tech University and Lubbock Lake Landmark for access to their collections and equipment, as well as the encouragement and support of their staff. Furthermore, special thanks go to the following individuals for their contributions to this research: Douglas K. Boyd, site information; Dr. Bernard A. Schriever, photography; Dr. Stance Hurst, lithic expertise; Dr. Kevin Mulligan, ArcGIS support; Cynthia Lopez, archival research; Richard Beres and Samuel Thompson, database support. Finally, I wish to acknowledge the never-ending support of my family and friends. ii Texas Tech University, Kathryn Smith, December 2010 TABLE OF CONTENTS ACKNOWLEDGMENTS ii ABSTRACT vi LIST OF TABLES vii LIST OF FIGURES viii I INTRODUCTION 1 Archaeological Background 1 Project Area Investigations 3 Research Orientation 5 Excavations at 41KT53 7 Results and Interpretations 9 Cultural Background 11 Paleoindian (11,500 RCYBP to 8,500 RCYBP) 11 Archaic (8,500 RCYBP to 2,000 RCYBP) 13 Ceramic (2,000 RCYBP to A.D. 1450) 13 Protohistoric (ca. A.D. 1450 to A.D. 1650) 13 Historic (A.D. 1650 to 1950s) 14 Environmental Setting 15 Geology 15 Lithic Raw Materials 18 Climate 18 Flora and Fauna 20 Water 20 Summary 23 II THEORETICAL PERSPECTIVE 24 Behavioral Archaeology 24 Correlates 25 Culture Processes 26 Major Cultural Processes 28 N-transforms 30 C-transforms 30 Other Effects on Processes 31 Spatial Archaeology 32 Goals and Objectives 33 Research Questions 34 Tool Ratios 35 Thermal Alteration 35 iii Texas Tech University, Kathryn Smith, December 2010 Summary 36 III METHODOLOGY 38 Behavioral Chain Analysis 38 Step 1: Activities That Could Have Taken Place 40 Step 2: Identifying Activity Areas 65 Step 3: Additional Information 68 Step 4: Additional Activities 68 Step 5: Recurring Activities 69 Step 6: Aspects of Social Organization 69 Summary 70 IV DATA 71 Mapping 72 Features 72 Raw Material Source 75 Debitage 75 Raw Material Source 75 Flakes 78 Debris 82 Debitage Thermal Alterations 83 Tools 84 Informal/Expedient Tools 84 Formal Tools 85 Other Tools 95 Distribution Mapping 97 Procurement Distribution 98 Manufacture Debitage Distribution 98 Maintenance Debitage Distribution 101 Debris Distribution 101 Feature Debitage Density 104 Postmold Type Distribution 106 Tool Distribution 106 Tool Density 110 Thermal Alteration 112 Impact on Lithics 113 Summary 115 V DISCUSSION 117 N-Transforms 118 Activity Areas 120 iv Texas Tech University, Kathryn Smith, December 2010 Tool and Feature Association 122 Refuse Activity Area Types 131 Additional Information 143 Tool Ratio 143 Mobility 146 Additional Activities 148 Recurring Activities 149 Tool Manufacture 149 Tool Use/Maintenance 150 Cleaning Activities for Lithic Debitage 150 Postmold Disposal 150 Aspects Of Social Organization 150 Summary 153 VI CONCLUSIONS 156 Research Questions 157 Supplemental Data 160 Regional Perspective 161 REFERENCES CITED 162 v Texas Tech University, Kathryn Smith, December 2010 ABSTRACT The Longhorn site (41KT53) represents a Protohistoric Native American encampment positioned along the border between the Rolling Plains and Southern High Plains of western Texas. Interpretations for the site are examined using lithic tool and debitage macroanalysis under the theoretical perspective of behavioral archaeology. Cultural and non-cultural processes are studied to determine their role in the creation, distribution, and disturbance of the site’s lithics and related features. Behavioral chain analysis is utilized to identify lithic activity areas that reflect the artifacts’ life history stages of procurement, manufacture, use, maintenance, and discard. Research orientation is focused on the roles of these cultural and non- cultural processes concerning thermal alterations present on some lithics in addition to activities performed during the site’s occupation. Site function based on these activities is used to address a skewed unifacial-to-bifacial stone tool ratio, and ArcGIS maps assist in displaying the distribution of the activity areas to reveal patterns of the site’s spatial organization. Aspects of trade and mobility are inferred based on the site’s lithic content and position on the landscape, providing a broader representation of Late Holocene hunter-gatherer life. vi Texas Tech University, Kathryn Smith, December 2010 LIST OF TABLES 1.1. Source information for raw lithic materials found within the Justiceburg Reservoir area 6 1.2. Features uncovered during excavations 10 1.3. Some common plant and animal species in the upper Brazos River Basin 21 4.1. Raw material source by debitage type (frequency; count) 77 4.2. Thermal alteration by debitage type (frequency; count) 84 4.3. Raw material source by tool type (frequency; count) 87 4.4. Thermal alteration by tool type (frequency; count) 88 4.5. Raw material source by scraper type (frequency; count) 90 4.6. Debitage types exhibiting cortex (frequency; count) 99 4.7. Postmold types based on debitage and shim count 108 5.1. Contents of the site's drop and toss zones 129 5.2. Lithic and stake contents for postmold types 141 vii Texas Tech University, Kathryn Smith, December 2010 LIST OF FIGURES 1.1. Location of the Longhorn site (41KT53) within the upper Brazos River Basin (modified from Boyd, 1997:Figure 4) 2 1.2. Proposed tipi stake made from a longhorn horn core after which the Longhorn site was named (Boyd et al., 1993, Figure 60) 8 2.1. The cultural element flow model that constitutes the life- history of most artifacts, here depicting hypothetical life-histories of a scraper (modified from Schiffer, 1995a:Figure 2.1) 27 3.1. Flake types typical of various flintknapping stages: a) core reduction flake; b) biface thinning flake; and c) resharpening flake 44 3.2. Common western Texas scrapers: a) concave scraper; b) convergent scraper; c) transverse scraper; d) side scraper; and e) end scraper 53 3.3. Bifacial lithic tools found in western Texas: a) four-sided beveled biface; b) graver; c) drill; and d) gunflint 54 3.4. Other tools that may indicate lithic-related activities: a) abrader; b) shaft straightener; and c) hammerstone 57 3.5. An informal tool modified to produce a single cutting edge 58 4.1. Site layout indicating all units within the area of focus 73 4.2. Flake types: a) core reduction flake; b) shaping flake; c) biface thinning flake; d) outré passé flake; e) finishing flake; and f) resharpening flake 79 4.3. Debris types: a) general debris; b) heat spall; c) heat shatter 82 4.4. Informal tool exhibiting original flake characteristics and used edge 85 4.5. Examples of tools representing the early stages of the flintknapping process: a) tested cobble; b) blank; and c) preform 89 4.6. Scraper types found at the Longhorn site: a) end; b) side; c) transverse; and d) convergent 91 4.7. Bifacial tools: a) beveled biface; b) possible graver; c) multi-use tool; d) gunflint; and e) untyped biface 93 4.8. Tools associated with the flintknapping process: a) abrader; b) shaft straightener; and c) hammerstone 97 4.9. Density distribution of all manufacture flakes 100 4.10. Density distribution of all maintenance flakes 102 4.11. Density distribution of all debris 103 4.12. Density distribution of all debitage associated directly with a feature 105 v iii Texas Tech University, Kathryn Smith, December 2010 4.13. Distribution of postmold types: type 1) postmolds contain debitage and shim(s); type 2) postmolds contain debitage and no shims; and type 3) postmolds contain a shim and no debitage 107 4.14. Distribution of all tool types 109 4.15. Density distribution of all tools associated directly with a feature 111 4.16. Density distribution of all thermally altered debitage 114 5.1. Edwards Formation chert lithic exhibiting partial chromatic alteration 121 5.2. Distribution of groundstone objects 124 5.3. Patterns of overlapping concentric drop and toss zones as a result of hearth placement and wind direction (modified from Binford, 1978:Figure 5) 127 5.4. Placement of 1m and 2.5m buffers around hearths to replicate drop and toss zones, respectively 128 5.5. Distribution of tool manufacturing stations 133 5.6. Distribution of use/maintenance stations 137 5.7. Distribution of disposal activity areas 139 5.8. Distribution of all activity areas 151 ix Texas Tech University, Kathryn Smith, December 2010 CHAPTER I INTRODUCTION The Longhorn site (41KT53) is a 17th century Native American encampment located on the western border of the Rolling Plains of Texas (Boyd et al., 1993) within the upper Brazos River Basin (Figure 1). Original excavations by Prewitt and Associates uncovered a plethora of artifacts and features, whose analysis led to interpretations regarding how the site was utilized by its inhabitants. A large percentage of the recovered artifacts include lithics that represent the use of flintknapping technology. These lithics are reexamined in this research utilizing macroscopic lithic analysis and behavioral archaeology to study aspects of human activities and natural transforms that create the site as it is found in the archaeological record. The study of aspects of human behavior and its effect on site creation can be a complicated yet fruitful endeavor.