Insights into the Mount St. Helens Magma Plumbing System from Coarse-grained, Crystal-rich Enclaves

Maren Wanke1, Olivier Bachmann2, Ben S Ellis2, Marcel Guillong1, Michael A Clynne3 and John S Pallister4, (1)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (2)ETH Zurich, Institute of Geochemistry and Petrology, Zurich, Switzerland, (3)USGS California Volcano Observatory, Menlo Park, CA, United States, (4)U.S. Geological Survey Alaska Volcano Observatory, Anchorage, AK, United States