Sample from left bank of Mageik Creek. Pl>opx>>hb>cpx; opx:cpx = 40:1.
Explosive eruptive record in the Katmai region, Alaska Peninsula: an overview
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.