Cretaceous to Quaternary planktonic foraminifera in ODP Leg 149 holes
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1996
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| _version_ | 1867168557640450048 |
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| author | Gervais, Elisabeth |
| author_facet | Gervais, Elisabeth |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This paper presents the results of a biostratigraphic analysis, based on planktonic foraminifers, of Ocean Drilling Program Leg 149 Sites 897- 900 in the Iberia Abyssal Plain, off the coast of Portugal. Dissolution and changes in water-mass temperatures affect the quality of biozonation in some levels of the Pliocene, Miocene, and Paleocene/lower Eocene. Important hiatuses occur in the upper Cretaceous, Paleocene to middle/lower upper? Eocene and uppermost middle to lower upper Miocene in all the sites studied. A major hiatus in Hole 898A, spanning the Pliocene, late Miocene and the latest part of the middle Miocene, could be caused by erosion triggered by climatic cooling and/or erosion connected with middle-late Miocene local tectonic activity. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_761652 |
| institution | PANGAEA |
| language | en |
| publishDate | 1996 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Cretaceous to Quaternary planktonic foraminifera in ODP Leg 149 holes Gervais, Elisabeth 149-897A; 149-897C; 149-897D; 149-898A; 149-899A; 149-899B; 149-900A; DRILL; Drilling/drill rig; Joides Resolution; Leg149; North Atlantic Ocean; Ocean Drilling Program; ODP This paper presents the results of a biostratigraphic analysis, based on planktonic foraminifers, of Ocean Drilling Program Leg 149 Sites 897- 900 in the Iberia Abyssal Plain, off the coast of Portugal. Dissolution and changes in water-mass temperatures affect the quality of biozonation in some levels of the Pliocene, Miocene, and Paleocene/lower Eocene. Important hiatuses occur in the upper Cretaceous, Paleocene to middle/lower upper? Eocene and uppermost middle to lower upper Miocene in all the sites studied. A major hiatus in Hole 898A, spanning the Pliocene, late Miocene and the latest part of the middle Miocene, could be caused by erosion triggered by climatic cooling and/or erosion connected with middle-late Miocene local tectonic activity. |
| title | Cretaceous to Quaternary planktonic foraminifera in ODP Leg 149 holes |
| topic | 149-897A; 149-897C; 149-897D; 149-898A; 149-899A; 149-899B; 149-900A; DRILL; Drilling/drill rig; Joides Resolution; Leg149; North Atlantic Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.761652 |