Age determination and climate change events in ODP Hole 164-1017E
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PANGAEA
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| Auteurs principaux: | , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2001
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| _version_ | 1867169510666010624 |
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| author | Hendy, Ingrid L Pedersen, Thomas F Kennett, James P Tada, Ryuji |
| author_facet | Hendy, Ingrid L Pedersen, Thomas F Kennett, James P Tada, Ryuji |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Application of a high-resolution multiproxy approach to a sedimentary section drilled at Ocean Drilling Program Site 1017, located under a highly active upwelling cell off Point Conception, California, provides clear evidence for surface ocean productivity shifts on submillennial timescales during the last 60 kyr. The proxies include bulk-sediment major and minor elements, organic carbon and carbonate concentrations, d15N, and planktonic foraminiferal species assemblage and carbon isotope determinations. The collective results demonstrate that marine productivity in this area was not simply linearly related to cold and warm cycles except during the millennial-scale climate oscillations of marine isotope stage (MIS) 3. During that interval, the upwelling cell and resulting high productivity were active during warm interstadial events and were largely inactive during cool stadial events. However, the Last Glacial Maximum was also relatively productive. Productivity increased dramatically during the Bølling warm interval, while the Ållerød and Younger Dryas were much less productive. High coccolithophorid abundance commenced during the earliest Holocene after 10 ka. The complexity of the productivity response was probably related to interplay between local winds, as well as California Undercurrent strength. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_826219 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination and climate change events in ODP Hole 164-1017E Hendy, Ingrid L Pedersen, Thomas F Kennett, James P Tada, Ryuji 167-1017E; DRILL; Drilling/drill rig; Joides Resolution; Leg167; North Pacific Ocean; Ocean Drilling Program; ODP Application of a high-resolution multiproxy approach to a sedimentary section drilled at Ocean Drilling Program Site 1017, located under a highly active upwelling cell off Point Conception, California, provides clear evidence for surface ocean productivity shifts on submillennial timescales during the last 60 kyr. The proxies include bulk-sediment major and minor elements, organic carbon and carbonate concentrations, d15N, and planktonic foraminiferal species assemblage and carbon isotope determinations. The collective results demonstrate that marine productivity in this area was not simply linearly related to cold and warm cycles except during the millennial-scale climate oscillations of marine isotope stage (MIS) 3. During that interval, the upwelling cell and resulting high productivity were active during warm interstadial events and were largely inactive during cool stadial events. However, the Last Glacial Maximum was also relatively productive. Productivity increased dramatically during the Bølling warm interval, while the Ållerød and Younger Dryas were much less productive. High coccolithophorid abundance commenced during the earliest Holocene after 10 ka. The complexity of the productivity response was probably related to interplay between local winds, as well as California Undercurrent strength. |
| title | Age determination and climate change events in ODP Hole 164-1017E |
| topic | 167-1017E; DRILL; Drilling/drill rig; Joides Resolution; Leg167; North Pacific Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.826219 |