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Harwood, David M; Maruyama, Toshiaki (1992): Diatom biostratigraphy of sediments from the Kerguelen Plateau, Southern Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.728782, Supplement to: Harwood, DM; Maruyama, T (1992): Middle Eocene to Pleistocene diatom biostratigraphy of Southern Ocean sediments from the Kerguelen Plateau, Leg 120. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 683-733, https://doi.org/10.2973/odp.proc.sr.120.160.1992

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Abstract:
The biostratigraphic distribution and abundance of lower Oligocene to Pleistocene diatoms is documented from Holes 747A, 747B, 748B, 749B, and 751A drilled during Ocean Drilling Program Leg 120 on the Kerguelen Plateau in the southeast Indian Ocean. The occurrence of middle and upper Eocene diatoms is also documented, but these are rare and occur in discrete intervals. The recovery of several Oligocene to Pleistocene sections with minimal coring gaps, relatively good magnetostratigraphic signatures, and mixed assemblages of both calcareous and siliceous microfossils makes the above four Leg 120 sites important biostratigraphic reference sections for the Southern Ocean and Antarctic continent. A high-resolution diatom zonation divides the last 36 m.y. into 45 zones and subzones. This zonation is built upon an existing biostratigraphic framework developed over the past 20 yr of Southern Ocean/Antarctic deep-sea coring and drilling.
After the recent advances from diatom biostratigraphic studies on sediments from Legs 113, 114, 119, and 120, a zonal framework for the Southern Ocean is beginning to stabilize. The potential age resolution afforded by the high-diversity diatom assemblages in this region ranks among the highest of all fossil groups. In addition to the 46 datum levels that define the diatom zones and subzones, the approximate stratigraphic level, age, and magnetic anomaly correlative of more than 150 other diatom datums are determined or estimated. These total 73 datum levels for the Pliocene-Pleistocene, 67 for the Miocene, and 45 for the Oligocene. Greater stratigraphic resolution is possible as the less common and poorly documented species become better known.
This high-resolution diatom stratigraphy, combined with good to moderately good magnetostratigraphic control, led to the recognition of more than 10 intervals where hiatuses dissect the Oligocene-Pleistocene section on the Kerguelen Plateau. We propose 12 new diatom taxa and 6 new combination
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -57.041182 * Median Longitude: 77.874082 * South-bound Latitude: -58.717000 * West-bound Longitude: 76.407500 * North-bound Latitude: -54.811000 * East-bound Longitude: 79.814800
Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1988-04-19T23:30:00
Event(s):
120-747A * Latitude: -54.811000 * Longitude: 76.794000 * Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1988-03-08T17:15:00 * Elevation: -1706.0 m * Penetration: 256 m * Recovery: 227.34 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 256 m cored; 0 m drilled; 88.8 % recovery
120-747B * Latitude: -54.811000 * Longitude: 76.794000 * Date/Time Start: 1988-03-08T17:15:00 * Date/Time End: 1988-03-09T06:45:00 * Elevation: -1708.0 m * Penetration: 50.3 m * Recovery: 48.91 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 50.3 m cored; 0 m drilled; 97.2 % recovery
120-748B * Latitude: -58.441000 * Longitude: 78.998100 * Date/Time Start: 1988-03-14T07:30:00 * Date/Time End: 1988-03-15T11:00:00 * Elevation: -1301.0 m * Penetration: 225.1 m * Recovery: 190.15 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 225.1 m cored; 0 m drilled; 84.5 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
11 datasets

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Datasets listed in this publication series

  1. Harwood, DM; Maruyama, T (1992): (Table 6) Miocene diatom biostratigraphy of ODP Hole 120-747A. https://doi.org/10.1594/PANGAEA.728773
  2. Harwood, DM; Maruyama, T (1992): (Table 4) Miocene-Pleistocene diatom biostratigraphy of ODP Hole 120-747A. https://doi.org/10.1594/PANGAEA.728771
  3. Harwood, DM; Maruyama, T (1992): (Table 7) Oligocene-Miocene diatom biostratigraphy of ODP Hole 120-747A. https://doi.org/10.1594/PANGAEA.728774
  4. Harwood, DM; Maruyama, T (1992): (Table 5) Miocene-Pleistocene diatom biostratigraphy of ODP Hole 120-747B. https://doi.org/10.1594/PANGAEA.728772
  5. Harwood, DM; Maruyama, T (1992): (Table 10) Eocene-Oligocene diatom biostratigraphy of ODP Hole 120-748B. https://doi.org/10.1594/PANGAEA.728777
  6. Harwood, DM; Maruyama, T (1992): (Table 9) Miocene diatom biostratigraphy of ODP Hole 120-748B. https://doi.org/10.1594/PANGAEA.728776
  7. Harwood, DM; Maruyama, T (1992): (Table 8) Miocene-Pleistocene diatom biostratigraphy of ODP Hole 120-748B. https://doi.org/10.1594/PANGAEA.728775
  8. Harwood, DM; Maruyama, T (1992): (Table 11) Diatoms of ODP Hole 120-749B. https://doi.org/10.1594/PANGAEA.728778
  9. Harwood, DM; Maruyama, T (1992): (Table 12) Eocene-Oligocene diatom biostratigraphy of ODP Hole 120-749B. https://doi.org/10.1594/PANGAEA.728779
  10. Harwood, DM; Maruyama, T (1992): (Table 14) Miocene diatom biostratigraphy of ODP Hole 120-751A. https://doi.org/10.1594/PANGAEA.728781
  11. Harwood, DM; Maruyama, T (1992): (Table 13) Pliocene-Pleistocene diatom biostratigraphy of ODP Hole 120-751A. https://doi.org/10.1594/PANGAEA.728780