Plate P5. Photomicrographs illustrating volcanic lithic fragments present within the sands and sandstones of Woodlark rift. 2. Brown vitric volcanic lithic fragment with vesicles and rare plagioclase laths, surrounded by colorless vitric, brown vitric and lathwork volcanic lithic fragments and detrital feldspar grains (Sample 180-1114A-14R-1, 106-108 cm [123.46 mbsf]) (plane-polarized light).