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Cronin, Thomas M; Raymo, Maureen E; Kyle, K P (1996): Ostracode species census data for DSDP Leg 94 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.712910, Supplement to: Cronin, TM et al. (1996): Pliocene (3.2-2.4 Ma) ostracode faunal cycles and deep ocean circulation, North Atlantic Ocean. Geology, Aug 1996; 24:, 24, 695-698, https://doi.org/10.1130/0091-7613(1996)024%3C0695:PMOFCA%3E2.3.CO;2

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Abstract:
Ostracode assemblages from Deep Sea Drilling Project Sites 607 (western Mid-Atlantic Ridge) and 610 (southeast Rockall Plateau) show rapid, systematic shifts during late Pliocene glacial-interglacial cycles that reflect deep-sea environmental change. Progressive decreases in North Atlantic deep-water taxa and increases in Southern Ocean taxa occur from 3.4 to 2.4 Ma, and high-amplitude faunal cycles begin near 2.8 Ma. Four ostracode assemblages, each with a characteristic phase relative to 41 k.y. obliquity glacial-interglacial d18O cycles, characterize the benthic faunal record at Site 607. Cross-spectral analysis shows that the Site 607 glacial assemblage has a 41 k.y. periodicity significant at the 95% level; other assemblages show a less significant, but still obvious, concentration of variance at 41 k.y. Faunal patterns suggest climatically controlled reorganization of deep-sea benthic communities during glacial-interglacial cycles due to oscillating deep-sea environments.
Further details:
Appendixes: Ostracode species census data for DSDP Leg 94
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 45.074633 * Median Longitude: -28.267133 * South-bound Latitude: 41.001200 * West-bound Longitude: -32.957300 * North-bound Latitude: 53.221500 * East-bound Longitude: -18.886800
Date/Time Start: 1983-07-06T00:00:00 * Date/Time End: 1983-07-28T00:00:00
Event(s):
94-607 * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 284.4 m * Recovery: 248.6 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 284.4 m cored; 0 m drilled; 87.4 % recovery
94-607A * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 311.3 m * Recovery: 205.1 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores; 226.6 m cored; 0 m drilled; 90.5 % recovery
94-610 * Latitude: 53.221500 * Longitude: -18.886800 * Date/Time: 1983-07-28T00:00:00 * Elevation: -2417.0 m * Penetration: 723 m * Recovery: 178.7 m * Location: North Atlantic/RIDGE * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 259.2 m cored; 0 m drilled; 68.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Cronin, TM; Raymo, ME; Kyle, KP (1996): (Appendix 1) DSDP Site 94-607 ostracode species census data. https://doi.org/10.1594/PANGAEA.712904
  2. Cronin, TM; Raymo, ME; Kyle, KP (1996): (Appendix 1) DSDP Site 94-607A ostracode species census data. https://doi.org/10.1594/PANGAEA.712905
  3. Cronin, TM; Raymo, ME; Kyle, KP (1996): (Appendix 2) DSDP Site 94-610 ostracode species census data. https://doi.org/10.1594/PANGAEA.712907