Juvenile pumice and pyroclastic obsidian reveal the eruptive conditions necessary for the stability of Plinian eruption of rhyolitic magma

Thomas Giachetti1, Thomas Shea2, Helge Martin Gonnermann3, Kieran A McCann4 and Erin C Hoxsie4, (1)University of Oregon, Earth Sciences, Eugene, United States, (2)University of Hawaii at Manoa, Earth Sciences, Honolulu, United States, (3)Rice University, Earth, Environmental and Planetary Sciences, Houston, United States, (4)University of Oregon, Eugene, OR, United States
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