Abstract
Archaeological excavation was conducted at a prehistoric rock shelter site on the Fort Carson Military Reservation, southeastern Colorado. The thickness of archaeological deposits, which occur entirely within alluvial sediments, ranges up to 2.5 meters. Three radiocarbon-dated cultural components are present: Middle Archaic period (ca. 4,400-3,700 B.P.), Late Archaic period (2,000-1,800 B.P.), and Early Ceramic (Woodland) period (1,800-1,000 B.P.). A depositional hiatus of 1500-2000 years is evident between the Middle and Late Archaic components. A hunting/gathering economy with very limited maize horticulture is evident at the site, and little evolution in subsistence orientation is detectable. Maize was present beginning in the Late Archaic period. Data analysis indicates that technological innovation and change were minimal during the span of occupation of the site, with the exceptions of reduction in projectile point size and introduction of ceramics in the Early Ceramic period. A static and relatively isolated adaptation is inferred.
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