TY - RPRT TI - Geology and 40 Ar/ 39 Ar geochronology of the medium- to high-K Tanaga volcanic cluster, western Aleutians AU - Brian R. Jicha AU - Michelle L. Coombs AU - Andrew T. Calvert AU - Brad S. Singer PY - 2012 DO - 10.1130/b30472.1 UR - https://pubs.usgs.gov/publication/70041457 ID - 70041457 ER -