Kameo, Koji; Sato, Tokiyuki (2000): Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.679325, Supplement to: Kameo, K; Sato, T (2000): Biogeography of Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific - floral response to the emergence of the Isthmus of Panama. Marine Micropaleontology, 39(1-4), 210-218, https://doi.org/10.1016/S0377-8398(00)00021-9
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Abstract:
Principal components analysis of nannofossil assemblages in five ODP sites in the Caribbean and the eastern equatorial Pacific was used to monitor Neogene surface water circulation changes. In 15.83-10.71 Ma, floral distributions clearly show the existence of the Circum-tropical Current between the Caribbean and the eastern equatorial Pacific and no surface water communication between the northern and southern Caribbean. In 10.71-9.36 Ma, the Circum-tropical Current weakened and the northward intra-Caribbean current had been initiated. Northern and southern Caribbean surface waters again became separated in 8.35-3.65 Ma and the Circum-tropical Current was regenerated. After 2.76 Ma, the northward intra-Caribbean current has completely been established and the Circum-tropical Current disappeared. This suggests that a barrier to the Circum-tropical Current had formed, indicating the final closure of the Isthmus of Panama.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 7.671353 * Median Longitude: -90.699279 * South-bound Latitude: -3.095000 * West-bound Longitude: -110.521400 * North-bound Latitude: 19.489600 * East-bound Longitude: -78.739800
Date/Time Start: 1991-05-08T00:00:00 * Date/Time End: 1996-01-29T00:00:00
Event(s):
138-844 * Latitude: 7.921317 * Longitude: -90.480767 * Date/Time Start: 1991-05-08T00:00:00 * Date/Time End: 1991-05-12T00:00:00 * Elevation: -3414.5 m * Penetration: 514 m * Recovery: 499.3 m * Location: North Pacific Ocean * Campaign: Leg138 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 52 cores; 490 m cored; 0 m drilled; 101.9% recovery
138-846 * Latitude: -3.095000 * Longitude: -90.818330 * Date/Time Start: 1991-05-21T00:00:00 * Date/Time End: 1991-05-26T00:00:00 * Elevation: -3296.0 m * Penetration: 871.5 m * Recovery: 821.61 m * Location: South Pacific Ocean * Campaign: Leg138 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 92 cores; 865.5 m cored; 0 m drilled; 94.9 % recovery
138-850 * Latitude: 1.297200 * Longitude: -110.521400 * Date/Time Start: 1991-06-12T00:00:00 * Date/Time End: 1991-06-16T00:00:00 * Elevation: -3786.1 m * Penetration: 474 m * Recovery: 470.7 m * Location: North Pacific Ocean * Campaign: Leg138 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 50 cores; 471 m cored; 0 m drilled; 99.9% recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets
Download Data
Datasets listed in this publication series
- Kameo, K; Sato, T (2000): Relative abundance of Neogene nannofossils at ODP Site 138-844 from the eastern equatorial Pacific. https://doi.org/10.1594/PANGAEA.679320
- Kameo, K; Sato, T (2000): Relative abundance of Neogene nannofossils at ODP Site 138-846 from the eastern equatorial Pacific. https://doi.org/10.1594/PANGAEA.679321
- Kameo, K; Sato, T (2000): Relative abundance of Neogene nannofossils at ODP Site 138-850 from the eastern equatorial Pacific. https://doi.org/10.1594/PANGAEA.679322
- Kameo, K; Sato, T (2000): Relative abundance of Neogene nannofossils at ODP Site 165-998 from the Caribbean. https://doi.org/10.1594/PANGAEA.679323
- Kameo, K; Sato, T (2000): Relative abundance of Neogene nannofossils at ODP Site 165-999 from the Caribbean. https://doi.org/10.1594/PANGAEA.679324