Figure F2. Photomicrograph of a glomerophyric cluster of phenocrysts (plagioclase, clinopyroxene, and magnetite) and a nearby microvesicle, which are common features of Unit 1. Interstitial spaces around these aggregates typically consist of microlite-free volcanic glass (Sample 193-1190B-2R-1 [Piece 7, 40-43 cm]; width of view = 1.38 mm. Photomicrograph ID# 1190B

Figure F2. Photomicrograph of a glomerophyric cluster of phenocrysts (plagioclase, clinopyroxene, and magnetite) and a nearby microvesicle, which are common features of Unit 1. Interstitial spaces around these aggregates typically consist of microlite-free volcanic glass (Sample 193-1190B-2R-1 [Piece 7, 40-43 cm]; width of view = 1.38 mm. Photomicrograph ID# 1190B_1; thin section 44).