Figure F11. Typical mineralogy and textures of upper series lavas. A. Bow-tie intergrowth of plagioclase and clinopyroxene of a moderately plagioclase-olivine-clinopyroxene phyric basalt (Unit I-1; Sample 163X-SEG57A-1-1, 18–22 cm). The groundmass is composed of the same mineral phases and Fe-Ti oxides. B. Seriate, highly plagioclase-olivine-clinopyroxene phyric basalt with euhedral plagioclase and subhedral (partially altered) olivine (Unit I-1; Sample 163X-SEG58A-1-1, 9–13 cm). C. Fresh, granular to subophitic groundmass of basaltic clast (Unit C-1; Sample 163X-SEG64B-1-1, 0–4 cm). Plagioclase laths, granular to interstitial clinopyroxene, and Fe-Ti oxide minerals dominate. D. Vesicular and sparsely plagioclase phyric basalt. Large vesicle filled with gray clay and zeolite (Unit I-1; Sample 163X-SEG55B-1-1, 27

Figure F11. Typical mineralogy and textures of upper series lavas. A. Bow-tie intergrowth of plagioclase and clinopyroxene of a moderately plagioclase-olivine-clinopyroxene phyric basalt (Unit I-1; Sample 163X-SEG57A-1-1, 18–22 cm). The groundmass is composed of the same mineral phases and Fe-Ti oxides. B. Seriate, highly plagioclase-olivine-clinopyroxene phyric basalt with euhedral plagioclase and subhedral (partially altered) olivine (Unit I-1; Sample 163X-SEG58A-1-1, 9–13 cm). C. Fresh, granular to subophitic groundmass of basaltic clast (Unit C-1; Sample 163X-SEG64B-1-1, 0–4 cm). Plagioclase laths, granular to interstitial clinopyroxene, and Fe-Ti oxide minerals dominate. D. Vesicular and sparsely plagioclase phyric basalt. Large vesicle filled with gray clay and zeolite (Unit I-1; Sample 163X-SEG55B-1-1, 27–31 cm).