TY - RPRT TI - 238U-230Th-226Ra Disequilibria in Dacite and Plagioclase from the 2004–2005 Eruption of Mount St. Helens AU - Kari M. Cooper AU - Carrie T. Donnelly PY - 2008 DO - 10.3133/pp175036 UR - https://pubs.usgs.gov/publication/pp175036 ID - pp175036 ER -