Abstract
Southeastern Arizona is crucial to our understanding of human development. The area has more buried Clovis sites than any area of comparable size in the United States, a well-defined Archaic sequence, and early agricultural developments. An understanding of development in this region requires careful consideration and evaluation of available climatic evidence. This paper reviews the conflicting Late Pleistocene and Holocene climatic data to present a more unified picture of climatic change in southeastern Arizona.
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