Unit T3; Layer A; 62 cm thick; Stratified (see below), poorly sorted, v. coarse bombs supported in sandy matrix, black scoria of variable vesicularity, red phenocryst-rich andesite and glassy black andesite lithic bombs. 5 cm fine, 4 cm coarse, 7 cm fine, 10 cm coarse, 10 cm fine, 15 cm coarse, 20 cm fine
The 1931 eruption of Aniakchak volcano, Alaska
Variations in eruption style during the 1931 A.D. eruption of Aniakchak volcano, Alaska
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.