Plate P2. Optical photomicrographs. 1. Poorly rounded tephrite lava clast. The phenocrysts are zoned aegirine-augite and feldspathoid (noseana-sodalite series) (Sample 180-1115C-37R-CC, 1.0-3.0 cm; plane-polarized light; scale bar = 0.1 mm). 2. Tholeiitic basalt with phenocrysts of olivine (altered to calcite), skeletal plagioclase microcrysts, and groundmass with arboscent plagioclase (Sample 180-1108B-47R-CC, 5-7 cm; plane-polarized light; scale bar = 0.1 mm). 3. Rounded granite clast with eutectic quartz/K-feldspar texture and partially chloritized biotite (Sample 180-1108B-47R-1, 33-37.5 cm; crossed polars; scale bar = 0.5 mm). 4. Clast of calc-alkaline basaltic andesite in cryptocrystalline matrix. The phenocrysts are red hornblende and plagioclase (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.5 mm). 5. Clast of calc-alkaline basalt andesite. The phenocrysts are zoned clinopyroxene and plagioclase in microcrystalline matrix (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.5 mm). 6. Clast of calc-alkaline basaltic andesite. The phenocrysts are zoned red to red-brown hornblende, biotite, and plagioclase in microcrystalline groundmass (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.1 mm). Bt = biotite, Cpx = clinopyroxene, Fspd = feldspathoid, Hbl = hornblende, Plg = plagioclase, Ol = olivine.

Plate P2. Optical photomicrographs. 1. Poorly rounded tephrite lava clast. The phenocrysts are zoned aegirine-augite and feldspathoid (noseana-sodalite series) (Sample 180-1115C-37R-CC, 1.0-3.0 cm; plane-polarized light; scale bar = 0.1 mm). 2. Tholeiitic basalt with phenocrysts of olivine (altered to calcite), skeletal plagioclase microcrysts, and groundmass with arboscent plagioclase (Sample 180-1108B-47R-CC, 5-7 cm; plane-polarized light; scale bar = 0.1 mm). 3. Rounded granite clast with eutectic quartz/K-feldspar texture and partially chloritized biotite (Sample 180-1108B-47R-1, 33-37.5 cm; crossed polars; scale bar = 0.5 mm). 4. Clast of calc-alkaline basaltic andesite in cryptocrystalline matrix. The phenocrysts are red hornblende and plagioclase (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.5 mm). 5. Clast of calc-alkaline basalt andesite. The phenocrysts are zoned clinopyroxene and plagioclase in microcrystalline matrix (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.5 mm). 6. Clast of calc-alkaline basaltic andesite. The phenocrysts are zoned red to red-brown hornblende, biotite, and plagioclase in microcrystalline groundmass (Sample 180-1115C-53R-3, 118-120 cm; plane-polarized light; scale bar = 0.1 mm). Bt = biotite, Cpx = clinopyroxene, Fspd = feldspathoid, Hbl = hornblende, Plg = plagioclase, Ol = olivine.