Plate P3. Photomicrographs illustrating metamorphic and serpentinite lithic fragments and mineral grains present within the sands and sandstones of Woodlark rift. 1. Remnant angular colorless olivine grains within a detrital serpentinite grain. Surrounding detrital grains include olivine, feldspar, and colorless and brown vitric volcanic lithic fragments (Sample 180-1108B-24X-CC, 18-20 cm [217.8 mbsf]) (plane-polarized light).