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Barron, John A (1996): Diatom constrains on the position of the Antarctic Polar Front in the middle part of the Pliocene [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.682280, Supplement to: Barron, JA (1996): Diatom constraints on the position of the Antarctic Polar Front in the middle part of the Pliocene. Marine Micropaleontology, 27(1-4), 195-213, https://doi.org/10.1016/0377-8398(95)00060-7

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Published: 1996 (exact date unknown) • DOI registered: 2008-03-12

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Abstract:
The relative percentages of diatom taxa in 5 deep-sea cores (DSDP 266, ODP 699A, ODP 747A. ODP 751A, and Eltanin Core 50-28) from the Southern Ocean are determined for an interval centered on 3.1 to 2.9 Ma in the middle part of the Pliocene. This climatically warm interval, which is being studied by the PRISM Project of the U.S. Geological Survey, coincides with a proposed interval of major deglaciation of East Antarctica. The maximum southerly position of the Antarctic Polar Front between 3.1 and 3.0 Ma is inferred from these diatom studies, the presence of calcareous nannofossils in the sediments, and sedimentologic and micropaleontologic information from the literature. It is suggested that the Antarctic Polar Front may have migrated by as much as 6° of latitude further to the south in the southeastern Atlantic and Indian Oceans during this Pliocene warm interval but probably lay close to its present day position in the southwest Atlantic and Drake Passage. Summer sea surface temperatures are inferred to have been no more than 3°-4°C warmer than present at latitudes between 55° and 60°.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -56.676840 * Median Longitude: 77.346100 * South-bound Latitude: -62.903000 * West-bound Longitude: -30.677000 * North-bound Latitude: -51.542000 * East-bound Longitude: 150.687000
Date/Time Start: 1972-01-01T00:00:00 * Date/Time End: 1988-04-19T23:30:00
Event(s):
28-266 * Latitude: -56.402200 * Longitude: 110.111700 * Date/Time: 1973-01-02T00:00:00 * Elevation: -4167.0 m * Penetration: 384 m * Recovery: 145 m * Location: Antarctic Ocean/RIDGE * Campaign: Leg28 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 219.5 m cored; 0 m drilled; 66.1 % recovery
114-699A * Latitude: -51.542000 * Longitude: -30.677000 * Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-03-26T15:29:00 * Elevation: -3716.0 m * Penetration: 518.1 m * Recovery: 356.52 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 56 cores; 518.1 m cored; 0 m drilled; 68.8 % recovery
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
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
15 datasets

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Datasets listed in this publication series

  1. Barron, JA (1996): (Table 1) Age model of DSDP Hole 28-266 from the south flank of the Southeast Indian Ridge, Southern Ocean. https://doi.org/10.1594/PANGAEA.682264
  2. Barron, JA (1996): (Table 2) Relative abundance of diatoms in middle Pliocene sediments of DSDP Hole 28-266 from south flank of the Southeast Indain Ridge, Southern Ocean. https://doi.org/10.1594/PANGAEA.682269
  3. Barron, JA (1996): (Table 3) Percentage of diatom assemblages made up by Nitzschia spp. and Rouxia spp. in middle Pliocene sediments of DSDP Hole 28-266 from the south flank of the Southeast Indian Ridge, Southern Ocean. https://doi.org/10.1594/PANGAEA.682275
  4. Barron, JA (1996): (Table 1) Age model of ODP Hole 114-699A in the Georgia Basin, Southern Ocean. https://doi.org/10.1594/PANGAEA.682265
  5. Barron, JA (1996): (Table 2) Relative abundance of diatoms in middle Pliocene sediments of ODP Hole 114-699A in the Georgia Basin, Southern Ocean. https://doi.org/10.1594/PANGAEA.682270
  6. Barron, JA (1996): (Table 3) Percentage of diatom assemblages made up by Nitzschia spp. and Rouxia spp. in middle Pliocene sediments of ODP Hole 114-699A in the Georgia Basin, Southern Ocean. https://doi.org/10.1594/PANGAEA.682276
  7. Barron, JA (1996): (Table 1) Age model of ODP Hole 120-747A from the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682266
  8. Barron, JA (1996): (Table 2) Relative abundance of diatoms in middle Pliocene sediments of ODP Hole 120-747A from the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682272
  9. Barron, JA (1996): (Table 3) Percentage of diatom assemblages made up by Nitzschia spp. and Rouxia spp. in middle Pliocene sediments of ODP Hole 120-747A from the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682277
  10. Barron, JA (1996): (Table 1) Age model of ODP Hole 120-751A from the Southern Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682267
  11. Barron, JA (1996): (Table 2) Relative abundance of diatoms in middle Pliocene sediments of ODP Hole 120-751A from the Southern Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682273
  12. Barron, JA (1996): (Table 3) Percentage of diatom assemblages made up by Nitzschia spp. and Rouxia spp. in middle Pliocene sediments of ODP Hole 120-751A from the Southern Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.682278
  13. Barron, JA (1996): (Table 1) Age model of sediment core ELT50.028-PC from the southwest Indian Ocean. https://doi.org/10.1594/PANGAEA.682268
  14. Barron, JA (1996): (Table 2) Relative abundance of diatoms in middle Pliocene sediments of core ELT50.028-PC from the southwestern Indian Ocean. https://doi.org/10.1594/PANGAEA.682274
  15. Barron, JA (1996): (Table 3) Percentage of diatom assemblages made up by Nitzschia spp. and Rouxia spp. in middle Pliocene sediments of core ELT50.028-PC from the southwestern Indian Ocean. https://doi.org/10.1594/PANGAEA.682279