Stream cut on wall slope. CZF seen (tan= 3cm, blk= 9cm). Lava makes waterfall here ~1/2 way down gulley. Lower in section, no blocky "breccia" nor no thick scoria layer. River sediments ARE here, which may have removed some of these deposits Hard, sharp sparsely phyric basaltic andesite
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes
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