Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean
Focussing on heavy-mineral associations in the Laptev-Sea continental margin area and the eastern Arctic Ocean, 129 surface sediment samples, two short and four long gravity cores have been studied. By means of the accessory components, heavy-mineral associations of surface sediment samples from the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.866938 2023-05-15T14:27:25+02:00 Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean Behrends, Marion MEDIAN LATITUDE: 82.855490 * MEDIAN LONGITUDE: 137.377346 * SOUTH-BOUND LATITUDE: 68.820000 * WEST-BOUND LONGITUDE: 58.320882 * NORTH-BOUND LATITUDE: 88.780800 * EAST-BOUND LONGITUDE: -167.000000 * DATE/TIME START: 1987-03-08T00:00:00 * DATE/TIME END: 1995-09-11T00:00:00 2003-10-20 application/zip, 15 datasets https://doi.pangaea.de/10.1594/PANGAEA.866938 https://doi.org/10.1594/PANGAEA.866938 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.866938 https://doi.org/10.1594/PANGAEA.866938 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Behrends, Marion (1999): Rekonstruktion von Meereisdrift und terrigenem Sedimenteintrag im Spätquartär: Schwermineralassoziationen in Sedimenten des Laptev-See-Kontinentalrandes und des zentralen Arktischen Ozeans (Reconstruction of sea-ice drift and terrigenous sediment supply in the Late Quaternary: Heavy-mineral associations in sediments of the Laptev Sea continental margin and the central Arctic Ocean). Berichte zur Polarforschung = Reports on Polar Research, 310, 167 pp, https://doi.org/10.2312/BzP_0310_1999 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.866938 https://doi.org/10.2312/BzP_0310_1999 2023-01-20T07:33:47Z Focussing on heavy-mineral associations in the Laptev-Sea continental margin area and the eastern Arctic Ocean, 129 surface sediment samples, two short and four long gravity cores have been studied. By means of the accessory components, heavy-mineral associations of surface sediment samples from the Laptev-See continental slope allowed the distinction into two different mineralogical provinces, each influenced by fluvial input of the Siberian river Systems. Transport pathways via sea ice from the shallow shelf areas into the Arctic Ocean up to the final ablation areas of the Fram Strait can be reconstructed by heavy-mineral data of surface sediments from the central Arctic Ocean. The shallow shelf of the Laptev Sea seems to be the most important source area for terrigenous material, as indicated by the abundant occurence of amphiboles and clinopyroxenes. Underneath the mixing Zone of the two dominating surface circulation Systems, the Beaufort- Gyre and Transpolar-Drift system, the imprint of the Amerasian shelf regions up to the Fram Strait is detectable because of a characteristical heavy-mineral association dominated by detrital carbonate and opaque minerals. Based On heavy-mineral characteristics of the potential circum-Arctic source areas, sea-ice drift, origin and distribution of ice-rafted material can be reconstructed during the past climatic cycles. Different factors controlling the transport of terrigenous material into the Arctic Ocean. The entrainment of particulate matter is triggered by the sea level, which flooded during highs and lows different regions resulting in the incorporation of sediment from different source areas into the sea ice. Additionally, the fluvial input even at low stands of sea level is responsible for the delivery of material of distinct sources for entrainment into the sea ice. Glacials and interglacials of climate cycles of the last 780 000 years left a characteristical signal in the central Arctic Ocean sediments caused by the ice- rafted material from different sources in ... Dataset Arctic Arctic Arctic Ocean Berichte zur Polarforschung Fram Strait laptev Laptev Sea Polar Research Polarforschung Reports on polar research Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Laptev Sea ENVELOPE(58.320882,-167.000000,88.780800,68.820000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Behrends, Marion Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Focussing on heavy-mineral associations in the Laptev-Sea continental margin area and the eastern Arctic Ocean, 129 surface sediment samples, two short and four long gravity cores have been studied. By means of the accessory components, heavy-mineral associations of surface sediment samples from the Laptev-See continental slope allowed the distinction into two different mineralogical provinces, each influenced by fluvial input of the Siberian river Systems. Transport pathways via sea ice from the shallow shelf areas into the Arctic Ocean up to the final ablation areas of the Fram Strait can be reconstructed by heavy-mineral data of surface sediments from the central Arctic Ocean. The shallow shelf of the Laptev Sea seems to be the most important source area for terrigenous material, as indicated by the abundant occurence of amphiboles and clinopyroxenes. Underneath the mixing Zone of the two dominating surface circulation Systems, the Beaufort- Gyre and Transpolar-Drift system, the imprint of the Amerasian shelf regions up to the Fram Strait is detectable because of a characteristical heavy-mineral association dominated by detrital carbonate and opaque minerals. Based On heavy-mineral characteristics of the potential circum-Arctic source areas, sea-ice drift, origin and distribution of ice-rafted material can be reconstructed during the past climatic cycles. Different factors controlling the transport of terrigenous material into the Arctic Ocean. The entrainment of particulate matter is triggered by the sea level, which flooded during highs and lows different regions resulting in the incorporation of sediment from different source areas into the sea ice. Additionally, the fluvial input even at low stands of sea level is responsible for the delivery of material of distinct sources for entrainment into the sea ice. Glacials and interglacials of climate cycles of the last 780 000 years left a characteristical signal in the central Arctic Ocean sediments caused by the ice- rafted material from different sources in ... |
format |
Dataset |
author |
Behrends, Marion |
author_facet |
Behrends, Marion |
author_sort |
Behrends, Marion |
title |
Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
title_short |
Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
title_full |
Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
title_fullStr |
Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
title_full_unstemmed |
Distribution of heavy minerals in sediment cores from the Laptev Sea continental margin and the central Arctic Ocean |
title_sort |
distribution of heavy minerals in sediment cores from the laptev sea continental margin and the central arctic ocean |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.866938 https://doi.org/10.1594/PANGAEA.866938 |
op_coverage |
MEDIAN LATITUDE: 82.855490 * MEDIAN LONGITUDE: 137.377346 * SOUTH-BOUND LATITUDE: 68.820000 * WEST-BOUND LONGITUDE: 58.320882 * NORTH-BOUND LATITUDE: 88.780800 * EAST-BOUND LONGITUDE: -167.000000 * DATE/TIME START: 1987-03-08T00:00:00 * DATE/TIME END: 1995-09-11T00:00:00 |
long_lat |
ENVELOPE(58.320882,-167.000000,88.780800,68.820000) |
geographic |
Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea |
genre |
Arctic Arctic Arctic Ocean Berichte zur Polarforschung Fram Strait laptev Laptev Sea Polar Research Polarforschung Reports on polar research Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Berichte zur Polarforschung Fram Strait laptev Laptev Sea Polar Research Polarforschung Reports on polar research Sea ice |
op_source |
Supplement to: Behrends, Marion (1999): Rekonstruktion von Meereisdrift und terrigenem Sedimenteintrag im Spätquartär: Schwermineralassoziationen in Sedimenten des Laptev-See-Kontinentalrandes und des zentralen Arktischen Ozeans (Reconstruction of sea-ice drift and terrigenous sediment supply in the Late Quaternary: Heavy-mineral associations in sediments of the Laptev Sea continental margin and the central Arctic Ocean). Berichte zur Polarforschung = Reports on Polar Research, 310, 167 pp, https://doi.org/10.2312/BzP_0310_1999 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.866938 https://doi.org/10.1594/PANGAEA.866938 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.866938 https://doi.org/10.2312/BzP_0310_1999 |
_version_ |
1766301136726261760 |