Mount Mazama Eruption (Other Keyword)

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Before and After Mazama at the Billy Big Spring Site: Landscape Evolution during Altithermal Times and Reoccupation after the Eruption (2017)
DOCUMENT Citation Only Anna Jansson.

How did the ash fall from the Mount Mazama eruption (7682–7584 cal. yr BP (Egan et al. 2015)) affect the people on the Northwestern Plains who experienced it? Data from 24GL304 (the Billy Big Spring Site) in northcentral Montana is used to investigate this question. Excavations conducted in 1952, 1954, 1971 by Thomas Kehoe and in 2016 by our team all found extensive Middle and Late Plains Archaic deposits, but in 2016 we discovered a ~10 cm thick layer of ash from this eruption. This poster...