An abrupt change in the magmatic source of rhyolite volcanism in Long Valley, CA recorded by pre-eruptive oxygen fugacities of the Early Rhyolites (Obsidians): evidence of transition from subduction-modified lithosphere to asthenosphere

Laura E Waters, Smithsonian Institution, National Museum of Natural History, Washington, DC, United States and Rebecca Ann Lange, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, United States
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