Enormous volumes of low - δ18O rhyolite in the Central Snake River Plain, Idaho

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Oxygen isotope analyses illustrate interactions between surface waters and magmas. That is because the earth’s only low-δ18O reservoir is meteoric water – water from rain and snow. This talk will give a crash course in oxygen isotopes, describe the unusual physical features of Snake River Plain rhyolites, and compare the two current models for the formation of low-δ18O rhyolites along the Yellowstone Hotspot track.

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Dr. Boroughs is the lab manager at the Peter Hooper GeoAnalytical Laboratory at Washington State University in Pullman, WA. He earned his MS and PhD at Washington State University and specializes in Geochemistry, Volcanology, and Igneous Petrology.