Plate P3. Photomicrographs illustrating metamorphic and serpentinite lithic fragments and mineral grains present within the sands and sandstones of Woodlark rift. 2. A detrital serpentinite grain surrounded by detrital grains of feldspar, biotite, and a fragment of feldspar, quartz, biotite schist. (Sample 180-1108B-36R-3, 52-56 cm [333.94 mbsf]) (cross-polarized light).