Late Quaternary geochemical record of sediment core GeoB3375-1
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| Auteurs principaux: | , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2000
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| _version_ | 1867171364002070528 |
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| author | Lamy, Frank Klump, Jens Hebbeln, Dierk Wefer, Gerold |
| author_facet | Lamy, Frank Klump, Jens Hebbeln, Dierk Wefer, Gerold |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Analyses of terrigenous sediments from the Chilean continental slope off the southern border of the Atacama desert (27.5°S), focusing on illite crystallinity and the Fe:Al ratio of the sediments, reveal a high-frequency variability of the position of the Southern Westerlies, which is very similar to the coeval short-term climatic events known from Greenland ice cores and from North Atlantic sediments. Besides showing dominantly precession-driven variability in precipitation over the Andes, these analyses also reveal rapid changes in weathering intensity along the Chilean Coastal Range during the last 80,000 years. These rapid changes occur at much shorter timescales than the 19-100 kyr orbital forcing of the Milankovitch cycles. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_787457 |
| institution | PANGAEA |
| language | en |
| publishDate | 2000 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Late Quaternary geochemical record of sediment core GeoB3375-1 Lamy, Frank Klump, Jens Hebbeln, Dierk Wefer, Gerold CHIPAL; GeoB; GeoB3375-1; Geosciences, University of Bremen; Gravity corer (Kiel type); SL; SO102/2; Sonne; South-East Pacific Analyses of terrigenous sediments from the Chilean continental slope off the southern border of the Atacama desert (27.5°S), focusing on illite crystallinity and the Fe:Al ratio of the sediments, reveal a high-frequency variability of the position of the Southern Westerlies, which is very similar to the coeval short-term climatic events known from Greenland ice cores and from North Atlantic sediments. Besides showing dominantly precession-driven variability in precipitation over the Andes, these analyses also reveal rapid changes in weathering intensity along the Chilean Coastal Range during the last 80,000 years. These rapid changes occur at much shorter timescales than the 19-100 kyr orbital forcing of the Milankovitch cycles. |
| title | Late Quaternary geochemical record of sediment core GeoB3375-1 |
| topic | CHIPAL; GeoB; GeoB3375-1; Geosciences, University of Bremen; Gravity corer (Kiel type); SL; SO102/2; Sonne; South-East Pacific |
| url | https://doi.org/10.1594/PANGAEA.787457 |