Metamorphic Rocks Sericite Volcanic Glass Groundmass quartz Phosphatic Microfossils Fe-oxides Dirty Fibrous Sample Interval (& in burrows) Debris Carbonate Metamorphic Mineral "1213B-30R-4, 66-69 cm" IVA / IVB Meta-silicified shale (phyllite) with volcanic ash 55 10 30 trace ghosts of 5 radiolarians and foraminifers(?) "1213B-32R-4, 71-74 cm" IVB / IVC Metachert 80 ghosts of 10 5 5 radiolarians and foraminifers(?)