Table of ContentsAbstractAcknowledgments List of Figures List of Tables CHAPTER 1: INTRODUCTION CHAPTER 2: THE PROBLEM: WHY CORRUGATED POTTERY? CHAPTER 3: THEORY: TOWARD A UNIFIED EVOLUTIONARY APPROACH CHAPTER 4: RESEARCH DESIGN: IMPLEMENTING AN EVOLUTIONARY APPROACH TO THE CORRUGATION PROBLEM CHAPTER 5: THE DEVELOPMENT AND SPREAD OF CORRUGATION CHAPTER 6: THE PRODUCTION AND USE OF PUEBLOAN UTILITY WARES CHAPTER 7: ENGINEERING PROPERTIES OF PLAIN AND CORRUGATED VESSELS CHAPTER 8: EXPLAINING CORRUGATION CHAPTER 9: CONCLUSIONS BIBLIOGRAPHY APPENDIX A: ANALYSIS OF POTENTIAL ASSEMBLAGE AND SHERD SIZE BIASES List of FiguresFigure 1: Map of the Southwest.Figure 2: Examples of plain, neckbanded, and corrugated vessels. Figure 3: Conceptual units in evolutionary theory. Figure 4: Map of the Mesa Verde region. Figure 5: Seriation of painted pottery from analyzed sites. Figure 6: Diagram of metric attributes recorded on exposed coils. Figure 7: Relative abundance of sherds with exposed coils. Figure 8: Box plot of the percentage of overlap between adjacent exposed coils. Figure 9: Box plot of the height of exposed coils. Figure 10: Box plot of coil junction depth for filleted and overlapped exposed coils. Figure 11: Spacing of indentations on exposed coils. Figure 12: An example of early indenting on neck-banded pottery. Figure 13: The relative abundance of pottery assigned to different classes of exposed coils. Figure 14: Map showing a reconstruction of the spread of early neck banding in the American Southwest. Figure 15: Map showing a reconstruction of the spread of full-body, indented corrugation in the American Southwest. Figure 16: Diagrams of sherd core color pattern classification used in this study. Figure 17: Change in the relative frequency of pottery wares through time in the Mesa Verde region. Figure 18: Plot of the relative frequency of bowl sherds against age for dated pottery assemblages from the Mesa Verde region. Figure 19: Diagram of common vessel forms in utility ware assemblages. Figure 20: Box plots showing the change through time in estimates of the accumulation rates of utility ware and white ware pottery in assemblages from the Mesa Verde region. Figure 21: Box plots of the average weight of plain/neck-banded and corrugated utility wares compiled from published sources on pottery assemblages in the Mesa Verde region. Figure 22: Scatter plot of rim radius estimates and rim cord length measurements. Figure 23: Box plots of rim cord length and rim radius for wide-mouth and indeterminate jar forms. Figure 24: Cumulative percentage graphs of estimated rim radii weighted by degrees of arc for wide-mouth and indeterminate jars. Figure 25: Relative abundance of spalling and interior surface pitting of different vessel parts. Figure 26: Relative abundance of spalling and interior surface pitting. Figure 27: Relative abundance of sherds with surface soot accumulations. Figure 28: Examples of fired plain replica vessels used in experiments Figure 29: Examples of fired full-body corrugated replica vessels used in experiments. Figure 30: The placement of pots, tiles, and thermocouple probes in kiln before firing. Figure 31: Sketch map of the arrangement of vessels and thermocouple probes in the kiln used to fire the replica vessels. Figure 32: Temperature profiles for pit kiln firing of replica utility ware vessels. Figure 33: Vessel forming times by sequence of construction for the 12 plain and 12 corrugated replicas. Figure 34: Box plot of time needed to form replicas of plain and corrugated vessels. Figure 35: Arrangement of vessels and temperature probes used to perform heating effectiveness and use-life experiments. Figure 36: Box plots of time elapsed before reaching peak temperature. Figure 37: Box plots of peak temperature. Figure 38: Scatter plot of heating effectiveness and vessel wall permeability. Figure 39: Changes in heating effectiveness over experimental runs. Figure 40: Box plots of the strength (MOR) of upper body and base fragments. Figure 41: Photograph of vessel 15 failure. Figure 42: Photograph of fragments produced when vessel 15 failed. Figure 43: Vertical profiles of exterior and interior vessel wall temperatures. Figure 44: Box plot of strength (MOR) of base fragments cut from replica plain and corrugated vessels used for different amounts of time. Figure 45: Ratios of median base to median upper body strength (MOR). Figure 46: Scatter plot of the heating effectiveness of plain and corrugated vessels over experimental use-life. Figure 47: A model that shows the relationship between sensitivity to the risks of innovation and productivity under conditions of increasing and diminishing returns. Figure 48: Variation in sherd size among the six utility ware assemblages. Figure 49: Change in the percentage of pottery with exposed coils, filleted exposed coils, and overlapped exposed coils with increasing sample size. Figure 50: Change in the percentage of nonrandom fracture patterns in plain-surfaced pottery with increasing sample size. Figure 51: Changes in the mean value of metric attributes of exposed coils plotted against increasing sample size. Figure 52: Changes in the percentages of exposed coil classes with increasing sample size. Figure 53: Changes in the percentages of different core color patterns with increasing sample size. Figure 54: Changes in the percentages of fire clouds with increasing sample size. Figure 55: Changes in the percentages of different vessel forms, using two quantification techniques, with increasing sample size. Figure 56: Changes in the percentages of different vessel forms, using two quantification techniques, with increasing sample size. Figure 57: Changes in the percentages of different vessel forms, using two quantification techniques, with increasing sample size. Figure 58: Changes in the percentages of rim radii with increasing sample size. Figure 59: Changes in the percentages of rim radii with increasing sample size. Figure 60: Changes in the percentages of rim radii with increasing sample size. Figure 61: Changes in the percentages of different use-related alterations with increasing sample size. List of TablesTable 1: Abundance of pottery with exposed coils on different vessel forms.Table 2: Abundance of pottery with exposed coils on different vessel parts. Table 3: Association between fracture pattern and sherd size for plain-surfaced pottery. Table 4: Abundance of different surface forming marks on plain-surfaced utility ware pottery. Table 5: Abundance of different core structures in plain-surfaced pottery. Table 6: Abundance of filleted and overlapped exposed coils. Table 7: Abundance of different manipulations of exposed coil surfaces. Table 8: Abundance by weight of different core color patterns. Table 9: Abundance of fire clouds on interior and exterior surfaces of utility ware pottery. Table 10: Weight of pottery assigned to specific vessel form classes. Table 11: Degrees of arc encompassed by rim segments assigned to specific vessel form classes. Table 12: Differences in the relative abundance of vessels forms between the two quantification methods. Table 13: Abundance of different surface wear classes on utility ware pottery. Table 14: Abundance of surface accumulations on utility ware pottery. Table 15: Measurements on replica utility ware vessels used in experiments. Table 16: Vessel numbers assigned to different factor combinations for experiments. Table 17: Results of impact strength tests on plain and corrugated vessels used for different amounts of time. Table 18: Results of biaxial flexure strength tests on fragments from plain and corrugated vessels used for different amounts of time. Table 19: Frequency of replica vessels with pitted interior basal surface after use in experiments by factor combination. Table 20: Fracture pattern data for different classes of exposed coils and scraped plain pottery. Table 21: The richness of utility ware features in relation to sample size. |