Neogene Radiolarians from the Kerguelen Plateau
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1992
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| _version_ | 1867169499810103296 |
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| author | Lazarus, David B |
| author_facet | Lazarus, David B |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Abundant, generally well-preserved radiolarians from Sites 737, 744, 745, 746, 747, 748, and 751 were used in stratigraphic analysis of Neogene, and particularly middle Miocene to Holocene, Kerguelen Plateau sediments. The composite Kerguelen section is more complete than the Weddell Sea sections recovered by Leg 113, and the radiolarians are better preserved. Leg 113 radiolarian zonations of Weddell Sea sites were applicable with only slight modification, and three new zones - Siphonosphaera vesuvius, Acrosphaeral labrata, and Amphymenium challengerae - are proposed for the latest Miocene. Geologic age estimates are given for all radiolarian zones used. Major hiatuses affecting most sites were seen within the middle Miocene, in the latest Miocene, and latest Pliocene. Five new species are described: Acrosphaera? labrata, Acrosphaera? mercurius, Siphonosphaera vesuvius, Actinomma? magnifenestra, and Helotholus? haysi. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_728881 |
| institution | PANGAEA |
| language | en |
| publishDate | 1992 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Neogene Radiolarians from the Kerguelen Plateau Lazarus, David B 119-744A; 119-745B; 119-746A; 120-747A; 120-747B; 120-748A; 120-748B; 120-751A; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean Abundant, generally well-preserved radiolarians from Sites 737, 744, 745, 746, 747, 748, and 751 were used in stratigraphic analysis of Neogene, and particularly middle Miocene to Holocene, Kerguelen Plateau sediments. The composite Kerguelen section is more complete than the Weddell Sea sections recovered by Leg 113, and the radiolarians are better preserved. Leg 113 radiolarian zonations of Weddell Sea sites were applicable with only slight modification, and three new zones - Siphonosphaera vesuvius, Acrosphaeral labrata, and Amphymenium challengerae - are proposed for the latest Miocene. Geologic age estimates are given for all radiolarian zones used. Major hiatuses affecting most sites were seen within the middle Miocene, in the latest Miocene, and latest Pliocene. Five new species are described: Acrosphaera? labrata, Acrosphaera? mercurius, Siphonosphaera vesuvius, Actinomma? magnifenestra, and Helotholus? haysi. |
| title | Neogene Radiolarians from the Kerguelen Plateau |
| topic | 119-744A; 119-745B; 119-746A; 120-747A; 120-747B; 120-748A; 120-748B; 120-751A; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean |
| url | https://doi.org/10.1594/PANGAEA.728881 |