Outcrops for bottom ~1/2 of 1/2dome are breccia (seemingly monolithologic) which may be an old scree slope of ancestral 1/2dome. Huge (up to 4m) blocks of lava. CZF (tan=1.5cm, blk=1cm) and Westdahl (3cm) pumices found. Breccia from base of halfdome. Dark rounded scorias, some pumices.
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes