Paleomagnetic properties of ODP Hole 178-1101A
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| Auteurs principaux: | , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2009
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| _version_ | 1867171362718613504 |
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| author | Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A Parés, Josep M |
| author_facet | Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A Parés, Josep M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sediments recovered from a drift deposit located on the Pacific side of the Antarctic Peninsula (ODP Leg 178, Site 1101) give a physical record of a bottom current, sourced from the Weddell Sea Deep Water, for the past 3 Ma. Sediment grain size and magnetic fabric analyses indicate a contourite depositional environment and little change in the average intensity of this current. Terrigenous fluxes decreased around the time of the onset of Northern Hemisphere Glaciation, which we interpret as a freezing of the base of the Antarctic Peninsula Ice Cap. Terrigenous fluxes have increased since 1.7 Ma implying a possible return of the Antarctic Peninsula Ice Cap to a more wet-based ice sheet. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_777736 |
| institution | PANGAEA |
| language | en |
| publishDate | 2009 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Paleomagnetic properties of ODP Hole 178-1101A Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A Parés, Josep M 178-1101A; DRILL; Drilling/drill rig; Joides Resolution; Leg178; Ocean Drilling Program; ODP; South Pacific Ocean Sediments recovered from a drift deposit located on the Pacific side of the Antarctic Peninsula (ODP Leg 178, Site 1101) give a physical record of a bottom current, sourced from the Weddell Sea Deep Water, for the past 3 Ma. Sediment grain size and magnetic fabric analyses indicate a contourite depositional environment and little change in the average intensity of this current. Terrigenous fluxes decreased around the time of the onset of Northern Hemisphere Glaciation, which we interpret as a freezing of the base of the Antarctic Peninsula Ice Cap. Terrigenous fluxes have increased since 1.7 Ma implying a possible return of the Antarctic Peninsula Ice Cap to a more wet-based ice sheet. |
| title | Paleomagnetic properties of ODP Hole 178-1101A |
| topic | 178-1101A; DRILL; Drilling/drill rig; Joides Resolution; Leg178; Ocean Drilling Program; ODP; South Pacific Ocean |
| url | https://doi.org/10.1594/PANGAEA.777736 |