Minerals at DSDP Leg 78A Holes@en
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One hundred and fifty-three samples of Recent to Late Cretaceous sediments from Sites 541, 542, and 543 were analyzed by X-ray diffraction. The main constituents are quartz, feldspar, clinoptilolite, opal-CT, calcite, and clay minerals (kaolinite, illite, smectite, and palygorskite). Minor components (generally less than 10% of the total) include amphibole, dolomite, rhodochrosite, chlorite, and mixed-layer clays. Amorphous clays, volcanic glass, and biogenic silica are also present. […]
创建时间：
2026-04-14
