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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.

Citation Information

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