Hydration dating of volcanism at Newberry Crater, Oregon

May 1, 1977

Obsidian hydration dating of pumice and obsidian from Newberry Crater, Oreg., shows that the postcaldera activity began about 6700 yr ago and that the latest major eruptive event occurred about 1400 yr B.P. Two of the hydration dates correlate with ¹⁴C-dated pumice eruptions.

Publication Year	1977
Title	Hydration dating of volcanism at Newberry Crater, Oregon
Authors	Irving Friedman
Publication Type	Article
Publication Subtype	Journal Article
Series Title	Journal of Research of the U.S. Geological Survey
Index ID	70233530
Record Source	USGS Publications Warehouse

Hydration dating of volcanism at Newberry Crater, Oregon

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