Two to three-cm-thick tephra layer that is 62 cm from the base of the 1912 Novarupta fallout layer. Pl>>opx>cpx>=mica; opx:cpx = 3:1. Median diameter is 0.20 mm and maximum pumice length is 3 mm.
Explosive eruptive record in the Katmai region, Alaska Peninsula: an overview
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