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Koizumi, Itaru (1992): Neogene diatoms of the Japan Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.771031, Supplement to: Koizumi, I (1992): Diatom biostratigraphy of the Japan Sea: Leg 127. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 249-289, https://doi.org/10.2973/odp.proc.sr.127128-1.127.1992

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Abstract:
A series of excellent upper Miocene through Quaternary diatomaceous sequences recovered at four sites during Leg 127 was examined for diatoms. The diagenetic transition from opal-A to opal-CT is a diachronic horizon from the uppermost part of the Denticulopsis katayamae Zone (8.5 Ma) at Hole 797B to the uppermost part of the Neodenticula kamtschatica Zone (5.73 Ma) at Hole 795A. The diatom zonation of Koizumi (1985) best divides the upper Miocene to Quaternary sequences above the opal-A/opal-CT boundary and also is useful to date carbonate concretions including diatoms below the boundary. Forty diatom datum levels were evaluated biostratigraphically based on the sediment accumulation rate curve, and several isochronous datum levels are newly proposed for the Japan Sea area. A warm-water current did not penetrated into the Japan Sea through the Tsushima strait during the late Miocene and Pliocene time, because subtropical warm-water diatoms are essentially not present in such sediment samples. The occurrences of diatom are cyclic throughout the Quaternary sediments and are affected by eustatic sea level changes.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 41.305567 * Median Longitude: 137.539917 * South-bound Latitude: 38.616000 * West-bound Longitude: 134.536000 * North-bound Latitude: 43.987000 * East-bound Longitude: 139.411000
Date/Time Start: 1989-06-26T15:15:00 * Date/Time End: 1989-08-04T17:00:00
Event(s):
127-794A * Latitude: 40.190000 * Longitude: 138.231000 * Date/Time Start: 1989-06-26T15:15:00 * Date/Time End: 1989-06-30T12:15:00 * Elevation: -2822.0 m * Penetration: 351.3 m * Recovery: 302.17 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 351.3 m cored; 0 m drilled; 86 % recovery
127-795A * Latitude: 43.987000 * Longitude: 138.967000 * Date/Time Start: 1989-07-12T20:15:00 * Date/Time End: 1989-07-16T00:00:00 * Elevation: -3311.0 m * Penetration: 365.9 m * Recovery: 258.26 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 364.9 m cored; 0 m drilled; 70.8 % recovery
127-796A * Latitude: 42.849000 * Longitude: 139.411000 * Date/Time Start: 1989-07-22T20:45:00 * Date/Time End: 1989-07-24T21:30:00 * Elevation: -2582.0 m * Penetration: 242.9 m * Recovery: 158.25 m * Location: Japan Sea * Campaign: Leg127 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 242.9 m cored; 0 m drilled; 65.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Koizumi, I (1992): (Table 2) Stratigraphic occurrences of Neogene diatoms in ODP Hole 127-794A. https://doi.org/10.1594/PANGAEA.771018
  2. Koizumi, I (1992): (Table 4) Stratigraphic occurrences of Neogene diatoms in ODP Hole 127-795A. https://doi.org/10.1594/PANGAEA.771020
  3. Koizumi, I (1992): (Table 3) Stratigraphic occurrences of Neogene diatoms in ODP Hole 127-796A. https://doi.org/10.1594/PANGAEA.771019
  4. Koizumi, I (1992): (Table 1) Stratigraphic occurrences of Neogene diatoms in ODP Hole 127-797B. https://doi.org/10.1594/PANGAEA.771017
  5. Koizumi, I (1992): (Table 5) Diatom zonation of samples from ODP Leg 127. https://doi.org/10.1594/PANGAEA.771026
  6. Koizumi, I (1992): (Table 6) Stratigraphic occurrence and chronology of diatom datum levels in ODP Leg 127 holes. https://doi.org/10.1594/PANGAEA.771029