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abstract: Environmental change has often been cited as affecting choices made whether to pursue cooperative or competitive strategies. The Flagstaff region provides a unique opportunity to address how environmental changes may affect choices made between competition and cooperation. Part of the region was a prehistoric frontier zone between three archaeological cultures and these groups had to contend with a marginal and highly variable climate for agriculture. These regional patterns of climatic variation are well documented and further the eruption of Sunset Crater Volcano in the midst of this frontier zone devastated local environments and reshaped the landscape. As groups re-colonized the frontier zone, they actively sought to negotiate new boundaries using both competitive and cooperative strategies that can be discerned archaeologically, including intergroup violence and the construction and use of communal ritual architecture. Dendroclimatological data is used to identify periods of environmental change and expectations for cooperative and competitive responses to these changes are developed based on anthropological theory and ethnographic case studies. These expectations are then tested against the archaeological record. Three lines of evidence are used to assess changes in levels of competition: (1) use of defensive sites, (2) presence of skeletal trauma, and (3) emergence of specialized social roles and weapons technologies. Two lines of evidence are used to assess changes in levels of cooperation (1) use of communal ritual architecture and (2) patterns of exchange. In some cases the expected relationships between favorable conditions and evidence of increased cooperation and between unfavorable conditions and evidence of increased competition are found. However, in other cases the expectations are not supported, with local historical and cultural contingencies appearing to override environmental influences. Contrasts between patterns of cooperation and competition found in the culturally diverse frontier zone versus the patterns found in the more culturally homogenous heartland are identified that suggest greater likelihood of the emergence of conflict in settings with pre-existing contexts of social differences. / Dissertation/Thesis / Doctoral Dissertation Anthropology 2015

The history of archaeological research in the Flagstaff area since 1851 is reviewed. The thesis of this study is that critical analysis of archaeological history can yield significant insights into both the process and the products of archaeological research. These insights in turn may lead to conclusions about the general nature of intellectual disputes and transitions in archaeology, and the validity of particular reconstructions and explanations of prehistoric behavior. The history of archaeological research in the Flagstaff area is broken into nine major divisions, each of which is separated by a significant intellectual or institutional transition. Particular attention is devoted to historical analysis of the period immediately before World War II, when the fundamental concepts and methods of Flagstaff archaeology were developed by Harold Colton and his associates at the Museum of Northern Arizona (MNA). These developments took place during a remarkably prolific period of archaeological investigation designed to disclose a prehistoric sequence of occupation conceived by MNA workers as "one grand history" of the Hopi people. It is argued, on the basis of the historical review, that Flagstaff archaeology, in its specific examples, indeed reveals much about the nature of intellectual disputes and transitions in American archaeology, and demonstrates that knowledge of the prehistoric past can indeed be cumulative. The study concludes with specific recommendations for improving such knowledge in the Flagstaff area, particularly for the issues of chronology and ceramic taxonomy.

abstract: In the proposed project I simultaneously and reflexively identify and characterize social boundaries in the archaeological record by examining material culture distributions in novel ways to re-assess the scale of the Verde Confederacy, a proposed regional-scale multi-settlement alliance in Late Prehistoric central Arizona. I focus on boundaries between entities larger than villages, but smaller than regions or culture areas. I propose three innovations to better accomplish these goals. First, unlike previous conceptualizations of social boundaries as monolithic, I argue that they are better conceived of as a heterogeneous, multi-faceted phenomenon. Second, I investigate social boundaries by examining multiple lines of evidence. Previous researchers have tended to focus on one category of data at the expense of others. Third, I associate boundaries with relational and categorical collective social identification. An alliance requires regular collective actions including communication and coordinated action between large groups. These actions are most likely to emerge among groups integrated by relational networks who share a high degree of categorical homogeneity. I propose a plain ware ceramic provenance model. Seven reference groups represent ceramic production in specific geographic areas. The reference groups are mineralogically and geochemically distinct, and can be visually differentiated. With this provenance model, I reconstruct the organization of utilitarian ceramic production and exchange, and argue that plain ware distribution is a proxy for networks of socially proximate friends and relatives. The plain ware data are compared to boundaries derived from settlement patterns, rock art, public architecture, and painted ceramics to characterize the overall nature of social boundaries in Late Prehistoric central Arizona. Three regions in the study area are strongly integrated by relational networks and categorical commonality. If alliances existed in Late Prehistoric central Arizona, they were most likely to emerge at this scale. A fourth region is identified as a frontier zone, where internal connections and shared identities were weaker. As seen among the League of the Iroquois, smaller integrated entities do not preclude the existence of larger social constructs, and I conclude this study with proposals to further test the Verde Confederacy model by searching for integration at a broader spatial scale. / Dissertation/Thesis / Doctoral Dissertation Anthropology 2016

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The variability of prehistoric settlements and settlement systems (settlement variability) is a result of the kinds of activities conducted (functional variability) and how long and intensively settlements were occupied (occupational variability). Previous studies of settlement variability, especially in the American Southwest, have emphasized primarily functional variability. This study explores the implications of both functional and occupational variability in contributing to settlement variability and how these factors in turn influence our ability to reconstruct past settlement systems. In investigating the effects of functional and occupational variability on settlement variability, an attempt was made to control the effects of other variables that might possibly contribute to settlement variability. Accordingly, the experimental design for this study required that a sufficient number of archaeological sites of the same developmental stage and cultural affiliation occurring in the same homogeneous environment be located. These design requirements were fulfilled by the discovery of the Pitiful Flats locality located midway between Grasshopper and Cibecue in east-central Arizona. The surface material of 34 archaeological sites (12 lithic sites, 22 ceramic sites) on Pitiful Flats was systematically collected to ensure data comparability. To control further for the effects of functional variability, interpretation-free units of analysis were developed for the lithic and ceramic assemblages by means of taxonomically based typologies. Typological and metric variation in these units of analysis, as well as variation in non-assemblage measurements (site size, density, and distribution of occupational debris), is used as evidence to support conclusions about site-type differences in lithic technology and settlement function, and to develop an occupational history of each Pitiful Flats site. These site-specific inferences provide a basis for reconstructing the structure of an extinct settlement system in the Grasshopper area. This reconstruction suggests that prior to the appearance of masonry architecture in the Grasshopper area, the basic regional settlement system consisted of a small number of "home bases" (permanently occupied habitations) and numerous sporadically occupied "work camps." The home base and work camps were spatially exclusive; the work camps were tethered to a particular home base. The tether settlement system explains many of the facts of the regional archaeological record. It also provides a basis for advancing the hypothesis that a modified form of swidden agriculture (non-slash and burn as opposed to slash and burn) was practiced. This form of cultivation was a non-labor-intensive technique for transforming a marginally productive environment for agricultural purposes. The demographic and social implications of the tether settlement model and the non-slash swidden hypothesis for understanding regional Grasshopper prehistory are also discussed.