Predominantly chunky shards and frothy pumice that is often microlitic. Some platy shards. Major and minor minerals: plagioclase and orthopyroxene. Trace minerals: clinopyroxene (?), Fe-Ti oxides.
Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years
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