Figure F11. Digital photomicrograph (crossed nicols) of a mixed coarse-grained sandstone containing fragments of planktonic and rare benthic foraminifer tests, subrounded grains of basalt and andesite with phenocrysts of plagioclase and rare hornblende, polycrystalline quartz (center), subangular plagioclase, and biotite in a micritic cement (interval 180-1115C-15R-3, 79-83 cm).