TY  - RPRT
TI  - Field-trip guide to Mount St. Helens, Washington - An overview of the eruptive history and petrology, tephra deposits, 1980 pyroclastic density current deposits, and the crater
AU  - John S. Pallister
AU  - Michael A. Clynne
AU  - Heather M. Wright
AU  - Alexa R. Van Eaton
AU  - James W. Vallance
AU  - David R. Sherrod
AU  - B. Peter Kokelaar
PY  - 2017
DO  - 10.3133/sir20175022d
UR  - https://pubs.usgs.gov/publication/sir20175022D
ID  - sir20175022D
ER  -