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Aoyagi, Koichi; Kazama, Toshie (1980): Sedimentary mineralogy of argillaceous sediments at DSDP Legs 56-57 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.822142, Supplement to: Aoyagi, K; Kazama, T (1980): Sedimentary mineralogy of argillaceous sediments from Deep Sea Drilling Project Holes 436, 438A, and 439, Japan Trench. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1011-1017, https://doi.org/10.2973/dsdp.proc.5657.136.1980

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Abstract:
Mineral assemblages of DSDP Holes 436 and 438A and the upper section of Hole 439 (871.5-911.0 m sub-bottom) resemble each other and are composed of montmorillonite (probably a small portion of montmorillonite/illite mixed-layer clays), illite, chlorite, kaolinite, quartz, plagioclase, hornblende, calcite, dolomite, siderite, gypsum, pyrite, and halite. In the middle section of Hole 439 (933.5-1041.0 m), clinoptilolite is also found. In the lower section of Hole 439 (1077.5-1150.0 m), montmorillonite is not confirmed, and clinoptilolite and mixed-layer illite are found. These assemblages, which also contain detrital kaolinite, are generally found in sediments from brackish-water environments. At Site 439, more than 1000 meters of sediment might have been removed by erosion at the base.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 40.304287 * Median Longitude: 144.324380 * South-bound Latitude: 39.932700 * West-bound Longitude: 143.235800 * North-bound Latitude: 40.629800 * East-bound Longitude: 145.557800
Date/Time Start: 1977-10-01T00:00:00 * Date/Time End: 1977-11-03T00:00:00
Event(s):
56-436 * Latitude: 39.932700 * Longitude: 145.557800 * Date/Time: 1977-10-01T00:00:00 * Elevation: -5240.0 m * Penetration: 397.5 m * Recovery: 240.8 m * Location: North Pacific/RIDGE * Campaign: Leg56 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 42 cores; 397.5 m cored; 0 m drilled; 60.6 % recovery
57-438A * Latitude: 40.629800 * Longitude: 143.235800 * Date/Time: 1977-10-19T00:00:00 * Elevation: -1558.0 m * Penetration: 878 m * Recovery: 535.5 m * Location: North Pacific/BASIN * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 83 cores; 780.5 m cored; 0 m drilled; 68.6 % recovery
57-439 * Latitude: 40.626800 * Longitude: 143.310500 * Date/Time: 1977-11-03T00:00:00 * Elevation: -1656.0 m * Penetration: 1157.5 m * Recovery: 160 m * Location: North Pacific/TRENCH * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 333.5 m cored; 0 m drilled; 48 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Aoyagi, K; Kazama, T (1980): (Table 1) Mineral composition and d-spacing of montmorillonite and montmorillonite-illite mixed-layer clay at DSDP Leg 56 and 57 Holes. https://doi.org/10.1594/PANGAEA.822140
  2. Aoyagi, K; Kazama, T (1980): (Table 2) Weight-loss ratio at 125°C from the results of DTA-TG at DSDP Legs 56 and 57 Holes. https://doi.org/10.1594/PANGAEA.822141