Figure F27. Digital photomicrograph (plane-polarized light) of a large rounded, weakly chloritized plagioclase and clinopyroxene-phyric basalt fragment (center) within a poorly sorted, mixed paraconglomerate. Common biogenic detritus includes benthic and planktonic foraminifers, algae, and shell fragments in a sparry calcite cement. Rare fresh angular plagioclase grains (Sample 180-1118A-69R-1, 35-37 cm).