Sedimentology and benthic foraminiferal assemblages of the late Younger Dryas and early Holocene in the Skagerrak
Fuente:
PANGAEA
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2011
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867169502847827968 |
|---|---|
| author | Erbs-Hansen, Dorthe Reng Knudsen, Karen Luise Gary, Anthony Cavedo Jansen, Eystein Gyllencreutz, Richard Scao, Vincent Lambeck, Kurt |
| author_facet | Erbs-Hansen, Dorthe Reng Knudsen, Karen Luise Gary, Anthony Cavedo Jansen, Eystein Gyllencreutz, Richard Scao, Vincent Lambeck, Kurt |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A high-resolution study of palaeoenvironmental changes through the late Younger Dryas and early Holocene in the Skagerrak, the eastern North Atlantic, is based on multi-proxy analyses of core MD99-2286 combined with palaeo-water depth modelling for the area. The late Younger Dryas was characterized by a cold ice-distal benthic foraminiferal fauna. After the transition to the Preboreal (c. 11 650 cal. a BP) this fauna was replaced by a Cassidulina neoteretis dominated fauna, indicating the influence of chilled Atlantic Water at the sea floor. Persisting relatively cold bottom-water conditions until c. 10 300 cal. a BP are presumably a result of an outflow of glacial meltwater from the Baltic area across south-central Sweden, which develops a strong stratification of the water column at MD99-2286. A short-term peak in the C/N ratio at c. 10 200 cal. a BP is suggested to indicate input of terrestrial material, which may represent the drainage of an ice-dammed lake in southern Norway, the Glomma event. After the last drainage route across south-central Sweden closed, c. 10 300 cal. a BP, the meltwater influence diminished, and the Skagerrak resembled a fjord with stable inflow of waters from the North Atlantic through the Norwegian Channel and a gradual increase in boreal species. Full interglacial conditions were established at the sea floor from c. 9250 cal. a BP. Subsequent warm stable conditions were interrupted by a short-term cooling around 8300-8200 cal. a BP, representing the 8.2 ka event. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_756234 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sedimentology and benthic foraminiferal assemblages of the late Younger Dryas and early Holocene in the Skagerrak Erbs-Hansen, Dorthe Reng Knudsen, Karen Luise Gary, Anthony Cavedo Jansen, Eystein Gyllencreutz, Richard Scao, Vincent Lambeck, Kurt 92F/NL; CALYPSO; Calypso Corer; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2286; Skagerrak A high-resolution study of palaeoenvironmental changes through the late Younger Dryas and early Holocene in the Skagerrak, the eastern North Atlantic, is based on multi-proxy analyses of core MD99-2286 combined with palaeo-water depth modelling for the area. The late Younger Dryas was characterized by a cold ice-distal benthic foraminiferal fauna. After the transition to the Preboreal (c. 11 650 cal. a BP) this fauna was replaced by a Cassidulina neoteretis dominated fauna, indicating the influence of chilled Atlantic Water at the sea floor. Persisting relatively cold bottom-water conditions until c. 10 300 cal. a BP are presumably a result of an outflow of glacial meltwater from the Baltic area across south-central Sweden, which develops a strong stratification of the water column at MD99-2286. A short-term peak in the C/N ratio at c. 10 200 cal. a BP is suggested to indicate input of terrestrial material, which may represent the drainage of an ice-dammed lake in southern Norway, the Glomma event. After the last drainage route across south-central Sweden closed, c. 10 300 cal. a BP, the meltwater influence diminished, and the Skagerrak resembled a fjord with stable inflow of waters from the North Atlantic through the Norwegian Channel and a gradual increase in boreal species. Full interglacial conditions were established at the sea floor from c. 9250 cal. a BP. Subsequent warm stable conditions were interrupted by a short-term cooling around 8300-8200 cal. a BP, representing the 8.2 ka event. |
| title | Sedimentology and benthic foraminiferal assemblages of the late Younger Dryas and early Holocene in the Skagerrak |
| topic | 92F/NL; CALYPSO; Calypso Corer; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2286; Skagerrak |
| url | https://doi.org/10.1594/PANGAEA.756234 |