Mcap is a dark brown-gray ash layer (3-12cm thick) that caps the DWP deposit, well-sorted, composed of gray-brown glass shards, plagioclase crystals, mafic minerals, and lithic fragments, with <1% light brown-beige pumiceous glass shards (shards similar to matrix glass of the PL and PM pumices)>
Stratigraphy, distribution, and evidence for mafic triggering of the ca. 8.5 ka Driftwood Pumice eruption, Makushin Volcano, Alaska, U.S.A.
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