Plug is small (~20-25 m diameter if circular). Agglutinate sits above and below, and all sides. Dark, sparsely phyric (ol? CPX?). Hard, angular, dense. Flow banding on weathered surface but none within. Basaltic andesite?
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes
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