Bulk components and ice rafted debris of five sediment cores of the Sophia Basin, Arctic Ocean
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2008
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| _version_ | 1867168551855456256 |
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| author | Winkelmann, Daniel Schäfer, Christoph J Stein, Ruediger Mackensen, Andreas |
| author_facet | Winkelmann, Daniel Schäfer, Christoph J Stein, Ruediger Mackensen, Andreas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Periods of enhanced terrigenous input to the ocean's basins of the North Atlantic have been reported for the last glacial period. We present a set of new sediment cores recovered from the Sophia Basin north of Svalbard which exhibit wide spread IRD layers reflecting enhanced terrigenous input throughout the last ~200 kyr. BP. Their consistent stratigraphic position, sedimentological character, high sedimentation rate and geochemical characteristic point to synchronously deposited layers which we name terrigenous input events (TIEs). Due to their higher densities, they generate excellent reflectors for sediment penetrating acoustic devices and prominent acoustic layers in the imagery of sedimentary structures. Therefore TIEs can be used for regional acoustic stratigraphy. Each of the events can be linked to major glacial activity on Svalbard. However, the Early Weichselian glaciation is not recorded as a TIE and, in agreement with other work, might not have occurred on Svalbard as a major glacial advance to the shelf break. Non-synchronous timing of western and northern sources on Svalbard points against sea-level induced iceberg discharge events. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_695687 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Bulk components and ice rafted debris of five sediment cores of the Sophia Basin, Arctic Ocean Winkelmann, Daniel Schäfer, Christoph J Stein, Ruediger Mackensen, Andreas ARK-XX/3; AWI_Paleo; Fram Strait; GC; Gravity corer; KAL; Kasten corer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS66; PS66/306-2; PS66/308-3; PS66/309-1; PS66/311-3; PS66/329-3 Periods of enhanced terrigenous input to the ocean's basins of the North Atlantic have been reported for the last glacial period. We present a set of new sediment cores recovered from the Sophia Basin north of Svalbard which exhibit wide spread IRD layers reflecting enhanced terrigenous input throughout the last ~200 kyr. BP. Their consistent stratigraphic position, sedimentological character, high sedimentation rate and geochemical characteristic point to synchronously deposited layers which we name terrigenous input events (TIEs). Due to their higher densities, they generate excellent reflectors for sediment penetrating acoustic devices and prominent acoustic layers in the imagery of sedimentary structures. Therefore TIEs can be used for regional acoustic stratigraphy. Each of the events can be linked to major glacial activity on Svalbard. However, the Early Weichselian glaciation is not recorded as a TIE and, in agreement with other work, might not have occurred on Svalbard as a major glacial advance to the shelf break. Non-synchronous timing of western and northern sources on Svalbard points against sea-level induced iceberg discharge events. |
| title | Bulk components and ice rafted debris of five sediment cores of the Sophia Basin, Arctic Ocean |
| topic | ARK-XX/3; AWI_Paleo; Fram Strait; GC; Gravity corer; KAL; Kasten corer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS66; PS66/306-2; PS66/308-3; PS66/309-1; PS66/311-3; PS66/329-3 |
| url | https://doi.org/10.1594/PANGAEA.695687 |