0.5 to 1-cm-thick tephra layer that is 93 cm from the base of the 1912 Novarupta fallout layer. Pl>opx>cpx; opx:cpx = 10:1. Median diameter is 0.14 mm and maximum pumice length is 3 mm.
Explosive eruptive record in the Katmai region, Alaska Peninsula: an overview
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