Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2000
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| _version_ | 1867168551600652288 |
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| author | Kameo, Koji Sato, Tokiyuki |
| author_facet | Kameo, Koji Sato, Tokiyuki |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_679325 |
| institution | PANGAEA |
| language | en |
| publishDate | 2000 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific Kameo, Koji Sato, Tokiyuki 138-844; 138-846; 138-850; 165-998; 165-999; Caribbean Sea; Colombia Basin, Caribbean Sea; COMPCORE; Composite Core; Joides Resolution; Leg138; Leg165; North Pacific Ocean; Ocean Drilling Program; ODP; South Pacific Ocean 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. |
| title | Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific |
| topic | 138-844; 138-846; 138-850; 165-998; 165-999; Caribbean Sea; Colombia Basin, Caribbean Sea; COMPCORE; Composite Core; Joides Resolution; Leg138; Leg165; North Pacific Ocean; Ocean Drilling Program; ODP; South Pacific Ocean |
| url | https://doi.org/10.1594/PANGAEA.679325 |