Planktonic foraminifera in late Eocene to Pleistocene sediments of ODP Hole 120-747A and 120-749B
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1992
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| _version_ | 1867170456465833984 |
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| author | Li, Qianyu Radford, Sally S Banner, Fred T |
| author_facet | Li, Qianyu Radford, Sally S Banner, Fred T |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Late Eocene to Pleistocene planktonic foraminifers from Leg 120 Holes 747A and 749B on the Kerguelen Plateau were quantitatively analyzed. Microperforate tenuitellid forms dominate the Oligocene to middle Miocene, and 17 species (including the new species Tenuitella jamesi and Tenuitellinata selleyi) are recorded. A lineage zonation of tenuitellid foraminifers is proposed as an alternative scheme for refinement of the Oligocene-Miocene biostratigraphy in high latitudes. Progressive or abrupt alterations in morphological characters within this lineage, producing different morphotypes or species, coincided with prolonged or sudden changes in paleoclimate. These microperforate planktonic foraminifers thus appear to have potential as indicators of cold-water masses and temperature fluctuations in post-Eocene oceans. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_728733 |
| institution | PANGAEA |
| language | en |
| publishDate | 1992 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Planktonic foraminifera in late Eocene to Pleistocene sediments of ODP Hole 120-747A and 120-749B Li, Qianyu Radford, Sally S Banner, Fred T 120-747A; 120-749B; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean Late Eocene to Pleistocene planktonic foraminifers from Leg 120 Holes 747A and 749B on the Kerguelen Plateau were quantitatively analyzed. Microperforate tenuitellid forms dominate the Oligocene to middle Miocene, and 17 species (including the new species Tenuitella jamesi and Tenuitellinata selleyi) are recorded. A lineage zonation of tenuitellid foraminifers is proposed as an alternative scheme for refinement of the Oligocene-Miocene biostratigraphy in high latitudes. Progressive or abrupt alterations in morphological characters within this lineage, producing different morphotypes or species, coincided with prolonged or sudden changes in paleoclimate. These microperforate planktonic foraminifers thus appear to have potential as indicators of cold-water masses and temperature fluctuations in post-Eocene oceans. |
| title | Planktonic foraminifera in late Eocene to Pleistocene sediments of ODP Hole 120-747A and 120-749B |
| topic | 120-747A; 120-749B; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean |
| url | https://doi.org/10.1594/PANGAEA.728733 |