Biostratigraphic significance of the calcareous nannofossil genus Reticulofenestra in the Upper Pliocene of the North Atlantic
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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1999
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| _version_ | 1867170453647261696 |
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| author | Kameo, Koji Takayama, Toshiaki |
| author_facet | Kameo, Koji Takayama, Toshiaki |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We demonstrate size fluctuations of the calcareous nannofossil genus Reticulofenestra in Upper Pliocene sediments from the North Atlantic Ocean and clarify a characteristic evolutionary trend of this genus. Four bioevents, which are based on abrupt decreases in maximum size and on changes of morphologic features of Reticulofenestra specimens, are detected in the sediments. They are the disappearance of R. minutula var. A, the termination of Acme Zone II of R. minutula var. C, the disappearance of R. minutula var. B, and the termination of Acme Zone I of R. minutula var. C, in ascending order. These are nearly synchronous and traceable events. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_679333 |
| institution | PANGAEA |
| language | en |
| publishDate | 1999 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Biostratigraphic significance of the calcareous nannofossil genus Reticulofenestra in the Upper Pliocene of the North Atlantic Kameo, Koji Takayama, Toshiaki 94-606; 94-607; 94-610A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg94; North Atlantic/FLANK; North Atlantic/RIDGE We demonstrate size fluctuations of the calcareous nannofossil genus Reticulofenestra in Upper Pliocene sediments from the North Atlantic Ocean and clarify a characteristic evolutionary trend of this genus. Four bioevents, which are based on abrupt decreases in maximum size and on changes of morphologic features of Reticulofenestra specimens, are detected in the sediments. They are the disappearance of R. minutula var. A, the termination of Acme Zone II of R. minutula var. C, the disappearance of R. minutula var. B, and the termination of Acme Zone I of R. minutula var. C, in ascending order. These are nearly synchronous and traceable events. |
| title | Biostratigraphic significance of the calcareous nannofossil genus Reticulofenestra in the Upper Pliocene of the North Atlantic |
| topic | 94-606; 94-607; 94-610A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg94; North Atlantic/FLANK; North Atlantic/RIDGE |
| url | https://doi.org/10.1594/PANGAEA.679333 |