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Brunner, Charlotte A (1991): Late Miocene to Quaternary planktonic foraminifera of ODP SIte 114-704 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.755426, Supplement to: Brunner, CA (1991): Latest Miocene to Quaternary biostratigraphy and paleoceanography, Site 704, subantarctic South Atlantic Ocean. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 201-215, https://doi.org/10.2973/odp.proc.sr.114.183.1991

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Abstract:
The planktonic foraminiferal zonation of Jenkins and Srinivasan (1986), which was defined for the southwestern sector of the temperate South Pacific Ocean, was successfully extended to the temperate sequences at Site 704. The zonation is based on first and last appearances of globorotalids, principally Globoconella species, which are indigenous to temperate surface-water masses. Most of the first and last appearances at ODP Site 704 are diachronous with those in the warmer temperate to subtropical South Atlantic, North Atlantic, and South Pacific oceans.
The upper Miocene, upper Pliocene, and Quaternary sequences are punctuated by frequent incursions of subantarctic and polar assemblages of planktonic foraminifers. I assume that the appearance of an assemblage dominated by sinistral Neogloboquadrina pachyderma means that the Polar Front has migrated northward, but I do not know its position north or south of the site based on this preliminary work. The upper Miocene sequence contains five incursions between 6.5 and 5 Ma and the upper Pliocene and Quaternary sequence contains 16 events since 2.47 Ma. These are minimum estimates because the number of observed events will probably increase with higher sample density and use of quantitative methods to reveal more subtle events.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -46.879500 * Median Longitude: 7.420650 * South-bound Latitude: -46.880000 * West-bound Longitude: 7.420500 * North-bound Latitude: -46.879000 * East-bound Longitude: 7.420800
Date/Time Start: 1987-04-25T13:30:00 * Date/Time End: 1987-05-03T10:14:00
Event(s):
114-704A * Latitude: -46.879000 * Longitude: 7.420800 * Date/Time Start: 1987-04-25T13:30:00 * Date/Time End: 1987-04-26T06:54:00 * Elevation: -2543.0 m * Penetration: 282.7 m * Recovery: 224.55 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 282.7 m cored; 0 m drilled; 79.4 % recovery
114-704B * Latitude: -46.880000 * Longitude: 7.420500 * Date/Time Start: 1987-04-26T06:45:00 * Date/Time End: 1987-05-03T10:14:00 * Elevation: -2541.0 m * Penetration: 671.7 m * Recovery: 502.75 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 72 cores; 671.7 m cored; 0 m drilled; 74.8 % 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. Brunner, CA (1991): (Table 1) Comparison of age and depth of datums of ODP Site 114-704. https://doi.org/10.1594/PANGAEA.755420
  2. Brunner, CA (1991): (Table 5) Planktonic foraminiferal datums in ODP Site 114-704. https://doi.org/10.1594/PANGAEA.755424
  3. Brunner, CA (1991): (Table 6) Dominant planktonic foraminifera genera in each sample of ODP Hole 114-704A. https://doi.org/10.1594/PANGAEA.755425
  4. Brunner, CA (1991): (Table 3) Planktonic foraminifers from ODP Hole 114-704A. https://doi.org/10.1594/PANGAEA.755421
  5. Brunner, CA (1991): (Table 4) Planktonic foraminifers from ODP Hole 114-704B. https://doi.org/10.1594/PANGAEA.755422