Pyroxenes as Crystal Clocks: Diffusion Chronometry Reveals Timescales of Magmatic Processes Preceding the 2009 Eruption of Redoubt Volcano, Alaska

Jamshid Akbar Moshrefzadeh, Alaska Volcano Observatory Fairbanks, Fairbanks, AK, United States, Jessica F Larsen, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, Pavel E Izbekov, Geophysical Institute, Fairbanks, AK, United States and Matthew Loewen, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, AK, United States