High-resolution sediment record from a submarine meandering canyon system in the eastern Atlantic
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| Auteurs principaux: | , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2008
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| _version_ | 1867169498488897536 |
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| author | Zühlsdorff, Christine Hanebuth, Till J J Henrich, Rüdiger |
| author_facet | Zühlsdorff, Christine Hanebuth, Till J J Henrich, Rüdiger |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Based on a high-resolution sediment record from a submarine meandering canyon system offshore the present-day hyperarid Saharan Africa, two phases of turbidity-current activity can be distinguished during the past 13,000 years. Frequent, siliciclastic turbidity currents can be related to deglacial sea-level history, whereas rhythmically recurring fine-grained and carbonate-rich turbidity currents with recurrence times of roughly 900 years are inferred for the Holocene. Various trigger mechanisms can be considered to initiate turbidity currents, but only a few can explain a periodic turbidite activity. A comparison of Holocene turbidite recurrence times and basic cycles of 900 and 1,800 years found in various Holocene paleoclimate studies suggests that a previously unrecognized climate-related coupling may be active. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_711635 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | High-resolution sediment record from a submarine meandering canyon system in the eastern Atlantic Zühlsdorff, Christine Hanebuth, Till J J Henrich, Rüdiger Center for Marine Environmental Sciences; GeoB8509-2; Gravity corer (Kiel type); M58/1; MARUM; Meteor (1986); SL Based on a high-resolution sediment record from a submarine meandering canyon system offshore the present-day hyperarid Saharan Africa, two phases of turbidity-current activity can be distinguished during the past 13,000 years. Frequent, siliciclastic turbidity currents can be related to deglacial sea-level history, whereas rhythmically recurring fine-grained and carbonate-rich turbidity currents with recurrence times of roughly 900 years are inferred for the Holocene. Various trigger mechanisms can be considered to initiate turbidity currents, but only a few can explain a periodic turbidite activity. A comparison of Holocene turbidite recurrence times and basic cycles of 900 and 1,800 years found in various Holocene paleoclimate studies suggests that a previously unrecognized climate-related coupling may be active. |
| title | High-resolution sediment record from a submarine meandering canyon system in the eastern Atlantic |
| topic | Center for Marine Environmental Sciences; GeoB8509-2; Gravity corer (Kiel type); M58/1; MARUM; Meteor (1986); SL |
| url | https://doi.org/10.1594/PANGAEA.711635 |