Hydration dating of volcanism at Newberry Crater, Oregon

Irving Friedman

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USGS · 70233530

Hydration dating of volcanism at Newberry Crater, Oregon

Irving Friedman

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Abstract

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 14 C-dated pumice eruptions.

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Journal of Research of the U.S. Geological Survey Article

Source-reported bounding extent: 43.66960999321696° to 43.750017197479615° latitude; -121.27841949462889° to -121.1788558959961° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Irving Friedman. 1977. Hydration dating of volcanism at Newberry Crater, Oregon. https://pubs.usgs.gov/publication/70233530

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