Plate P4. Photomicrographs illustrating volcanic and plutonic lithic fragments within the sands and sandstones of Woodlark rift. 5. Feldspar and biotite phyric felsitic volcanic lithic fragment surrounded by other felsitic volcanic lithic fragments, brown vitric, and lathwork volcanic lithic fragments, and detrital feldspar set in a calcite-cemented coarse-grained lithic sandstone (Sample 180-1116A-1R-1, 58-60 cm [0.58 mbsf]) (cross-polarized light).