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Pospichal, James J; Wise, Sherwood W (1990): Paleocene to middle Eocene calcareous nannofossils of Maude Rise, Weddell Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.753320, Supplement to: Pospichal, JJ; Wise, SW (1990): Paleocene to middle Eocene calcareous nannofossils of ODP Sites 689 and 690, Maud Rise, Weddell Sea. In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 613-638, https://doi.org/10.2973/odp.proc.sr.113.205.1990

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Abstract:
Cores from Sites 689 and 690 of Ocean Drilling Program Leg 113 provide the most continuous Paleocene and Eocene sequence yet recovered by deep sea drilling in the high latitudes of the Southern Ocean. The nannofossil-foraminifer oozes and chalks recovered from Maud Rise at 65°S in the Weddell Sea provide a unique opportunity for biostratigraphic study of extremely high southern latitude carbonate sediments.
The presence of warm water index fossils such as the discoasters and species of the Tribrachiatus plexus facilitate the application of commonly used low latitude calcareous nannofossil biostratigraphic zonation schemes for the upper Paleocene and lower Eocene intervals. In the more complete section at Site 690, Okada and Bukry Zones CP1 through CP10 can be identified for the most part with the possible exception of Zone CP3. Several hiatuses are present in the sequence at Site 689 with the most notable being at the Cretaceous/Tertiary and Paleocene/Eocene boundaries.
Though not extremely diverse, the assemblage of discoasters in the upper Paleocene and lower Eocene calcareous oozes is indicative of warm, relatively equable climates during that interval. A peak in discoaster diversity in uppermost Paleocene sediments (Zone CP8) corresponds to a negative shift in 5180 values. Associated coccolith assemblages are quite characteristic of high latitudes with abundant Chiasmolithus, Prinsius, and Toweius. Climatic cooling is indicated for middle Eocene sediments by assemblages that contain very abundant Reticulofenestra, lack common discoasters and sphenoliths and are much less diverse overall.
Two new taxa are described, Biscutum? neocoronum n. sp. and Amithalithina sigmundii n. gen., n. sp.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -64.903200 * Median Longitude: 1.962880 * South-bound Latitude: -65.161000 * West-bound Longitude: 1.204800 * North-bound Latitude: -64.517000 * East-bound Longitude: 3.099900
Date/Time Start: 1987-01-16T08:00:00 * Date/Time End: 1987-01-23T20:30:00
Event(s):
113-689B * Latitude: -64.517000 * Longitude: 3.099900 * Date/Time Start: 1987-01-16T08:00:00 * Date/Time End: 1987-01-18T06:45:00 * Elevation: -2091.0 m * Penetration: 297.3 m * Recovery: 229.45 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 297.3 m cored; 0 m drilled; 77.2 % recovery
113-690 * Latitude: -65.160667 * Longitude: 1.204867 * Date/Time Start: 1987-01-19T00:00:00 * Date/Time End: 1987-01-23T00:00:00 * Elevation: -2925.0 m * Penetration: 542.3 m * Recovery: 401.7 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 49 cores; 421.7 m cored; 0 m drilled; 95.3% recovery
113-690B * Latitude: -65.161000 * Longitude: 1.204900 * Date/Time Start: 1987-01-20T03:15:00 * Date/Time End: 1987-01-21T07:00:00 * Elevation: -2925.0 m * Penetration: 213.4 m * Recovery: 214.75 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 213.4 m cored; 0 m drilled; 100.6 % recovery
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. Pospichal, JJ; Wise, SW (1990): (Table 1) Distribution of calcareous nannofossils in the Eocene of ODP Hole 113-689B. https://doi.org/10.1594/PANGAEA.753314
  2. Pospichal, JJ; Wise, SW (1990): (Table 2) Distribution of calcareous nannofossils in the Paleocene of ODP Hole 113-689B. https://doi.org/10.1594/PANGAEA.753316
  3. Pospichal, JJ; Wise, SW (1990): (Table 3) Distribution of calcareous nannofossils in the Eocene of ODP Hole 113-690B. https://doi.org/10.1594/PANGAEA.753317
  4. Pospichal, JJ; Wise, SW (1990): (Table 4) Distribution of calcareous nannofossils in the Paleocene of ODP Hole 113-690B. https://doi.org/10.1594/PANGAEA.753318
  5. Pospichal, JJ; Wise, SW (1990): (Table 5) Distribution of calcareous nannofossils in the Paleocene of ODP Hole 113-690C. https://doi.org/10.1594/PANGAEA.753319