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Mount St. Helens Petrology Workshop

January 1, 2007

Following seismic activity in late September 2004, the current eruption of Mount St. Helens began with an explosive steam and ash emission on 1 October 2004, with hot dacite emerging from the crater floor on 11 October 2004. Nearly two years later, with more than 80 million cubic meters of erupted dacite, accompanied by rare explosions and predominantly shallow seismicity questions still remain about what initiated and what is sustaining the eruption.

The U.S. Geological Survey's (USGS) Cascade Volcano Observatory (CVO) hosted the 2006 Mount St. Helens Petrology Workshop in Vancouver, Wash., on 27–30 August 2006. With many of the more than 40 workshop participants finalizing contributions to a USGS Professional Paper on the current Mount St. Helens eruption, the workshop was a timely opportunity to share results, reconcile interpretations, and plan future research.

Publication Year 2007
Title Mount St. Helens Petrology Workshop
DOI 10.1029/2007EO020004
Authors Michael C. Rowe, John S. Pallister, Anita Grunder
Publication Type Article
Publication Subtype Journal Article
Series Title Eos, Transactions, American Geophysical Union
Index ID 70033079
Record Source USGS Publications Warehouse
USGS Organization Volcano Hazards Program