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Stratigraphy and Bonebed Taphonomy at Blackwater Draw Locality No. 1 during the Middle Holocene (Altithermal)

Abstract Salvage excavations at Blackwater Draw Locality No. I (LA 3224) during 1956 recovered a small assemblage of bison remains and a few lithic artifacts from Archaic-age levels at the site. The assemblage was originally reported to be the remains of an Archaic kill/processing event. Reanalysis of the faunal remains and consideration of the taphonomic factors affecting the structure of the assemblage casts the reportedly cultural origin of the bone bed into doubt. Bone density and weathering patterns, the geomorphic history of the strata in which the remains were found and radiocarbon assays suggest the remains were not found in primary context. The strata in which the bones were encased were continually reworked during the Early to Middle Holocene. Eolian deflation (the primary taphonomic agent affecting the assemblage) during the Middle Holocene on the southern Plains was oftentimes severe at the site level, and can be attributed to the overarching climatic regime of the Altithermala