Figure F34. Close-up photograph of Sample 183-1138A-82R-3 (Piece 4, 27-45 cm) showing upper part of the zone with peperitic textures in the flow-top breccia of basement Unit 9. An XRD analysis indicates that quartz is the dominant phase present in the sediment, with only trace amounts of clay and amorphous silica. Clinoptilolite fills vesicles within clasts and very small stringers crosscutting the sediment.