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Yuasa, Makoto; Watanabe, Teruo; Kuwajima, Toshiaki; Hirama, Tadao; Fujioka, Kantaro (1992): Geochemistry of oceanic arc basement rocks of Sumisu Rift and Ohmachi Seamount [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.774347, Supplement to: Yuasa, M et al. (1992): Prehnite-pumpellyite facies metamorphism in oceanic arc basement from Site 791 in the Sumisu Rift, western Pacific. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 185-193, https://doi.org/10.2973/odp.proc.sr.126.127.1992

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Published: 1992 (exact date unknown) • DOI registered: 2012-02-16

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Abstract:
Prehnite-pumpellyite facies metamorphism is described in the oceanic-arc basement rocks of Ocean Drilling Program Leg 126, Site 791 in the Sumisu Rift, western Pacific. Chemical variations of pumpellyite, epidote, chlorite, and prehnite are examined and paragenetic relations discussed. The metamorphism took place during the pre-rifting stage of an intraoceanic arc. During the backarc rifting stage, the geothermal gradient of the area was not as high as that of a spreading mid-oceanic ridge.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 29.635417 * Median Longitude: 140.471097 * South-bound Latitude: 29.075667 * West-bound Longitude: 139.870100 * North-bound Latitude: 30.916500 * East-bound Longitude: 140.731333
Date/Time Start: 1989-05-06T16:45:00 * Date/Time End: 1989-05-13T22:45:00
Event(s):
126-791B * Latitude: 30.916500 * Longitude: 139.870100 * Date/Time Start: 1989-05-06T16:45:00 * Date/Time End: 1989-05-13T22:45:00 * Elevation: -2279.0 m * Penetration: 1145 m * Recovery: 114.28 m * Location: Philippine Sea * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 77 cores; 738.2 m cored; 0 m drilled; 15.5 % recovery
GSJ-D731 * Latitude: 29.150667 * Longitude: 140.712667 * Elevation: -2645.0 m * Location: Western Pacific * Method/Device: Dredge (DRG)
GSJ-D794 * Latitude: 29.075667 * Longitude: 140.731333 * Elevation: -3115.0 m * Location: Western Pacific * Method/Device: Dredge (DRG)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Yuasa, M; Watanabe, T; Kuwajima, T et al. (1992): (Table 3) Representative chemical compositions of chlorite from the Ohmachi Seamount and Sumisu Rift. https://doi.org/10.1594/PANGAEA.774341
  2. Yuasa, M; Watanabe, T; Kuwajima, T et al. (1992): (Table 2) Representative chemical compositions of epidote from the Ohmachi Seamount and Sumisu Rift. https://doi.org/10.1594/PANGAEA.774340
  3. Yuasa, M; Watanabe, T; Kuwajima, T et al. (1992): (Table 4) Representative chemical compositions of prehnite from the Ohmachi Seamount and Sumisu Rift. https://doi.org/10.1594/PANGAEA.774342
  4. Yuasa, M; Watanabe, T; Kuwajima, T et al. (1992): (Table 1) Representative chemical compositions of pumpellyite from the Ohmachi Seamount and Sumisu Rift. https://doi.org/10.1594/PANGAEA.774339
  5. Yuasa, M; Watanabe, T; Kuwajima, T et al. (1992): (Table 5) Trace element contents of metamorphic and nonmetamorphic volcanic rocks from the Ohmachi Seamount. https://doi.org/10.1594/PANGAEA.774345