Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean
Two sediment piston cores were recovered from the Chukchi-Alaskan (05JPC) and Canadian Beaufort (02PC) margins to investigate grain-size, geochemical and mineralogical compositions. This allowed the reconstruction of changes in detrital sediment provenance and transport related to climate variabilit...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.891053 2023-05-15T13:22:53+02:00 Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean Deschamps, Charles-Edouard Montero-Serrano, Jean-Carlos St-Onge, Guillaume MEDIAN LATITUDE: 72.016575 * MEDIAN LONGITUDE: -142.550394 * SOUTH-BOUND LATITUDE: 71.610000 * WEST-BOUND LONGITUDE: -157.517716 * NORTH-BOUND LATITUDE: 72.694201 * EAST-BOUND LONGITUDE: -133.570000 2018-06-14 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.891053 https://doi.org/10.1594/PANGAEA.891053 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.891053 https://doi.org/10.1594/PANGAEA.891053 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Deschamps, Charles-Edouard; Montero-Serrano, Jean-Carlos; St-Onge, Guillaume (2018): Sediment provenance changes in the western Arctic Ocean in response to ice rafting, sea level, and oceanic circulation variations since the last deglaciation. Geochemistry, Geophysics, Geosystems, 19(7), 2147-2165, https://doi.org/10.1029/2017GC007411 Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.891053 https://doi.org/10.1029/2017GC007411 2023-01-20T07:34:10Z Two sediment piston cores were recovered from the Chukchi-Alaskan (05JPC) and Canadian Beaufort (02PC) margins to investigate grain-size, geochemical and mineralogical compositions. This allowed the reconstruction of changes in detrital sediment provenance and transport related to climate variability since the last deglaciation. The end-member modelling analyses of grain-size indicate that sea ice and nepheloid transport as well as the Mackenzie River sediment plume are major factors influencing sedimentation in the Chukchi-Alaskan and Canadian Beaufort margins, respectively. Unmixing of the sediment composition indicates that detrital sediments in core 02PC are derived mainly from the Mackenzie River, whereas sediments from core 05JPC are derived mainly from the Mackenzie River during the deglaciation and include a mixture of Holocene sediments from the Bering Strait, Mackenzie River, and Eurasian margin. The dolomite-rich IRD recorded in both cores could be related to the different phases of iceberg discharges from the Amundsen Gulf Ice Stream. Quartz and feldspar-rich IRD dated at 13 and 10.6 ka cal BP are related to the Lake Agassiz outburst in core 02PC and meltwater discharge from the Brooks Range glaciers in core 05JPC. Detrital proxies in core 02PC support the hypothesis that large meltwater and iceberg discharges from the Lake Agassiz outburst to the Arctic Ocean and Amundsen Gulf ice stream may have triggered the Younger Dryas. Finally, similar trends observed between sea-level curves and our detrital proxy suggest that the sea-level changes in the western Arctic Ocean have an important influence on the sediment dynamic during the early- to mid-Holocene. Dataset Amundsen Gulf Arctic Arctic Arctic Ocean Bering Strait Brooks Range Chukchi Iceberg* Mackenzie river Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Bering Strait Mackenzie River ENVELOPE(-157.517716,-133.570000,72.694201,71.610000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Two sediment piston cores were recovered from the Chukchi-Alaskan (05JPC) and Canadian Beaufort (02PC) margins to investigate grain-size, geochemical and mineralogical compositions. This allowed the reconstruction of changes in detrital sediment provenance and transport related to climate variability since the last deglaciation. The end-member modelling analyses of grain-size indicate that sea ice and nepheloid transport as well as the Mackenzie River sediment plume are major factors influencing sedimentation in the Chukchi-Alaskan and Canadian Beaufort margins, respectively. Unmixing of the sediment composition indicates that detrital sediments in core 02PC are derived mainly from the Mackenzie River, whereas sediments from core 05JPC are derived mainly from the Mackenzie River during the deglaciation and include a mixture of Holocene sediments from the Bering Strait, Mackenzie River, and Eurasian margin. The dolomite-rich IRD recorded in both cores could be related to the different phases of iceberg discharges from the Amundsen Gulf Ice Stream. Quartz and feldspar-rich IRD dated at 13 and 10.6 ka cal BP are related to the Lake Agassiz outburst in core 02PC and meltwater discharge from the Brooks Range glaciers in core 05JPC. Detrital proxies in core 02PC support the hypothesis that large meltwater and iceberg discharges from the Lake Agassiz outburst to the Arctic Ocean and Amundsen Gulf ice stream may have triggered the Younger Dryas. Finally, similar trends observed between sea-level curves and our detrital proxy suggest that the sea-level changes in the western Arctic Ocean have an important influence on the sediment dynamic during the early- to mid-Holocene. |
format |
Dataset |
author |
Deschamps, Charles-Edouard Montero-Serrano, Jean-Carlos St-Onge, Guillaume |
spellingShingle |
Deschamps, Charles-Edouard Montero-Serrano, Jean-Carlos St-Onge, Guillaume Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
author_facet |
Deschamps, Charles-Edouard Montero-Serrano, Jean-Carlos St-Onge, Guillaume |
author_sort |
Deschamps, Charles-Edouard |
title |
Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
title_short |
Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
title_full |
Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
title_fullStr |
Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
title_full_unstemmed |
Mineralogical, geochemical, sediment provenance and grain-size end members from sediment core AMD0214-02PC and HLY0501-01JPC from the western Arctic Ocean |
title_sort |
mineralogical, geochemical, sediment provenance and grain-size end members from sediment core amd0214-02pc and hly0501-01jpc from the western arctic ocean |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.891053 https://doi.org/10.1594/PANGAEA.891053 |
op_coverage |
MEDIAN LATITUDE: 72.016575 * MEDIAN LONGITUDE: -142.550394 * SOUTH-BOUND LATITUDE: 71.610000 * WEST-BOUND LONGITUDE: -157.517716 * NORTH-BOUND LATITUDE: 72.694201 * EAST-BOUND LONGITUDE: -133.570000 |
long_lat |
ENVELOPE(-157.517716,-133.570000,72.694201,71.610000) |
geographic |
Arctic Arctic Ocean Bering Strait Mackenzie River |
geographic_facet |
Arctic Arctic Ocean Bering Strait Mackenzie River |
genre |
Amundsen Gulf Arctic Arctic Arctic Ocean Bering Strait Brooks Range Chukchi Iceberg* Mackenzie river Sea ice |
genre_facet |
Amundsen Gulf Arctic Arctic Arctic Ocean Bering Strait Brooks Range Chukchi Iceberg* Mackenzie river Sea ice |
op_source |
Supplement to: Deschamps, Charles-Edouard; Montero-Serrano, Jean-Carlos; St-Onge, Guillaume (2018): Sediment provenance changes in the western Arctic Ocean in response to ice rafting, sea level, and oceanic circulation variations since the last deglaciation. Geochemistry, Geophysics, Geosystems, 19(7), 2147-2165, https://doi.org/10.1029/2017GC007411 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.891053 https://doi.org/10.1594/PANGAEA.891053 |
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.891053 https://doi.org/10.1029/2017GC007411 |
_version_ |
1766367691882364928 |