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Context, Provenance and Technology of a Western Stemmed Tradition Artifact Cache from the Cooper's Ferry Site, Idaho

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Title Context, Provenance and Technology of a Western Stemmed Tradition Artifact Cache from the Cooper's Ferry Site, Idaho
Names Davis, Loren G. (creator)
Nyers, Alex J. (creator)
Willis, Samuel C. (creator)
Date Issued 2014-10 (iso8601)
Note This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Society for American Archaeology and can be found at: http://www.saa.org/AbouttheSociety/Publications/AmericanAntiquity.aspx
Abstract The discovery of an artifact cache containing Western Stemmed Tradition projectile
points in a clearly defined pit feature at the Cooper’s Ferry site offers a unique
perspective on early lithic technology and logistical organization in western North
America. A description and analysis of the cache feature reveals several new insights,
including: a rocky cairn capped the surface of the pit feature; some of the artifacts were
made from cryptocrystalline silicates found 16 km away; debitage analysis, including
aggregate and attribute based measures, identified two distinct lithic reduction stages
present in the cache; new radiocarbon assays suggest that the cache is probably not
early Holocene in age and may date to associated radiocarbon age estimates of
11,370-11,410 B.P. Unlike Clovis caches, the Pit Feature A2 cache at Cooper’s Ferry
appears to be a generalized toolkit that was probably placed at the site for future use.
If the 11,370-11,410 B.P. assays date the creation of the Pit Feature A2 cache, then its
creators were probably not pioneers in the lower Salmon River canyon but possessed
local knowledge about the landscape and raw material sources; these patterns suggest
greater time depth for Western Stemmed Tradition foragers.
Genre Article
Identifier Davis, L. G., Nyers, A. J., & Willis, S. C. (2014). Context, Provenance and Technology of a Western Stemmed Tradition Artifact Cache from the Cooper's Ferry Site, Idaho. American Antiquity, 79(4), 596-632. doi:10.7183/0002-7316.79.4.596

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