Ostracode species census data for DSDP Leg 94 sites
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1996
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| _version_ | 1867167661341802496 |
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| author | Cronin, Thomas M Raymo, Maureen E Kyle, K P |
| author_facet | Cronin, Thomas M Raymo, Maureen E Kyle, K P |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Ostracode assemblages from Deep Sea Drilling Project Sites 607 (western Mid-Atlantic Ridge) and 610 (southeast Rockall Plateau) show rapid, systematic shifts during late Pliocene glacial-interglacial cycles that reflect deep-sea environmental change. Progressive decreases in North Atlantic deep-water taxa and increases in Southern Ocean taxa occur from 3.4 to 2.4 Ma, and high-amplitude faunal cycles begin near 2.8 Ma. Four ostracode assemblages, each with a characteristic phase relative to 41 k.y. obliquity glacial-interglacial d18O cycles, characterize the benthic faunal record at Site 607. Cross-spectral analysis shows that the Site 607 glacial assemblage has a 41 k.y. periodicity significant at the 95% level; other assemblages show a less significant, but still obvious, concentration of variance at 41 k.y. Faunal patterns suggest climatically controlled reorganization of deep-sea benthic communities during glacial-interglacial cycles due to oscillating deep-sea environments. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_712910 |
| institution | PANGAEA |
| language | en |
| publishDate | 1996 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Ostracode species census data for DSDP Leg 94 sites Cronin, Thomas M Raymo, Maureen E Kyle, K P 94-607; 94-607A; 94-610; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg94; North Atlantic/FLANK; North Atlantic/RIDGE Ostracode assemblages from Deep Sea Drilling Project Sites 607 (western Mid-Atlantic Ridge) and 610 (southeast Rockall Plateau) show rapid, systematic shifts during late Pliocene glacial-interglacial cycles that reflect deep-sea environmental change. Progressive decreases in North Atlantic deep-water taxa and increases in Southern Ocean taxa occur from 3.4 to 2.4 Ma, and high-amplitude faunal cycles begin near 2.8 Ma. Four ostracode assemblages, each with a characteristic phase relative to 41 k.y. obliquity glacial-interglacial d18O cycles, characterize the benthic faunal record at Site 607. Cross-spectral analysis shows that the Site 607 glacial assemblage has a 41 k.y. periodicity significant at the 95% level; other assemblages show a less significant, but still obvious, concentration of variance at 41 k.y. Faunal patterns suggest climatically controlled reorganization of deep-sea benthic communities during glacial-interglacial cycles due to oscillating deep-sea environments. |
| title | Ostracode species census data for DSDP Leg 94 sites |
| topic | 94-607; 94-607A; 94-610; 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.712910 |