Scoria. Median density Phi= -1.5 ; mm= 2.83 . Sorting= 3.06 . Coarse mode of grain size Phi= -2 ; mm= 4 . Fine mode of grain size Phi= 5.5 ; mm= 0.02 . Lithics wt%= 30.4
Eruption and deposition of the Fisher Tuff (Alaska): evidence for the evolution of pyroclastic flows
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