Radiocarbon Chronology of the Western Stemmed Tradition on the Columbia Plateau
The Western Stemmed Tradition (WST) is an early cultural phase on the Columbia Plateau of Western North America. Much of the seminal work establishing the timeframe of WST is now decades old and suffers from imprecise dating. In this poster, we review previously compiled data, update stratigraphic interpretations, and model existing radiocarbon assays within a Bayesian framework. Preliminary results indicate that WST on the Columbia Plateau is at least coeval with Clovis and spanned at least 1,900 calendar years, but possibly 2,800 years. A population model based on date frequency suggests WST groups peaked between 12,100 and 11,200 cal BP. WST thrived during the Younger Dryas, a period long considered a possible cause for the collapse of Clovis and the extinction of roughly 35 genera of animals.
Cite this Record
Radiocarbon Chronology of the Western Stemmed Tradition on the Columbia Plateau. Danny Gilmour, Thomas Brown, Paul Solimano, Kenneth Ames. Presented at The 81st Annual Meeting of the Society for American Archaeology, Orlando, Florida. 2016 ( tDAR id: 404766)
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min long: -122.168; min lat: 42.131 ; max long: -113.028; max lat: 49.383 ;