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Wei, Wuchang; Wise, Sherwood W (1992): Distribution of calcareous nannofossils in Oligocene to Pleistocene sediments of the Southern Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.728691, Supplement to: Wei, W; Wise, SW (1992): Oligocene-Pleistocene calcareous nannofossils from Southern Ocean sites 747, 748, and 751. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 509-521, https://doi.org/10.2973/odp.proc.sr.120.201.1992

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Abstract:
Detailed calcareous nannofossil range charts for the Oligocene-Pleistocene sections from high-latitude Ocean Drilling Program Sites 747, 748, and 751 in the southern Indian Ocean are presented in this report. Calcareous nannofossils are generally low in abundance in Pliocene-Pleistocene sediments, whereas they are very abundant throughout the Miocene and Oligocene. Species diversity, however, is low compared with assemblages in the lower latitudes. Nannofossil reworking is extensive in the middle Miocene at Site 751, less extensive in the lower Miocene at Site 748, and negligible for the entire Neogene at Site 747. Six nannofossil datums, which have previously been correlated with magnetostratigraphy in the Southern Ocean, were recognized in the upper Oligocene-Pleistocene sequence at Site 747. Three such nannofossil datums are available for the Neogene at Sites 748 and 751. A new subspecies, Coccolithus pelagicus floralis, is described.
Project(s):
Coverage:
Median Latitude: -57.199571 * Median Longitude: 78.601700 * South-bound Latitude: -58.441000 * West-bound Longitude: 76.794000 * 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 * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 256 m cored; 0 m drilled; 88.8 % recovery
120-748A * Latitude: -58.441000 * Longitude: 78.998100 * Date/Time Start: 1988-03-13T22:15:00 * Date/Time End: 1988-03-14T07:30:00 * Elevation: -1298.0 m * Penetration: 19 m * Recovery: 19.25 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 19 m cored; 0 m drilled; 101.3 % 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 * Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 225.1 m cored; 0 m drilled; 84.5 % recovery
Size:
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