Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic)
Mineralogical, geochemical, magnetic, and siliciclastic grain-size signatures of 34 surface sediment samples from the Mackenzie-Beaufort Sea Slope and Amundsen Gulf were studied in order to better constrain the redox status, detrital particle provenance, and sediment dynamics in the western Canadian...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.866871 2023-05-15T13:22:50+02:00 Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) Gamboa, Adriana Montero-Serrano, Jean-Carlos St-Onge, Guillaume Rochon, André Desiage, Pierre-Arnaud MEDIAN LATITUDE: 70.562106 * MEDIAN LONGITUDE: -130.901482 * SOUTH-BOUND LATITUDE: 69.488000 * WEST-BOUND LONGITUDE: -138.597000 * NORTH-BOUND LATITUDE: 71.907000 * EAST-BOUND LONGITUDE: -122.630000 2016-10-18 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.866871 https://doi.org/10.1594/PANGAEA.866871 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.866871 https://doi.org/10.1594/PANGAEA.866871 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Gamboa, Adriana; Montero-Serrano, Jean-Carlos; St-Onge, Guillaume; Rochon, André; Desiage, Pierre-Arnaud (2017): Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic). Geochemistry, Geophysics, Geosystems, 18(2), 488-512, https://doi.org/10.1002/2016GC006477 Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.866871 https://doi.org/10.1002/2016GC006477 2023-01-20T07:33:47Z Mineralogical, geochemical, magnetic, and siliciclastic grain-size signatures of 34 surface sediment samples from the Mackenzie-Beaufort Sea Slope and Amundsen Gulf were studied in order to better constrain the redox status, detrital particle provenance, and sediment dynamics in the western Canadian Arctic. Redox-sensitive elements (Mn, Fe, V, Cr, Zn) indicate that modern sedimentary deposition within the Mackenzie-Beaufort Sea Slope and Amundsen Gulf took place under oxic bottom-water conditions, with more turbulent mixing conditions and thus a well-oxygenated water column prevailing within the Amundsen Gulf. The analytical data obtained, combined with multivariate statistical (notably, principal component and fuzzy c-means clustering analyses) and spatial analyses, allowed the division of the study area into four provinces with distinct sedimentary compositions: (1) the Mackenzie Trough-Canadian Beaufort Shelf with high phyllosilicate-Fe oxide-magnetite and Al-K-Ti-Fe-Cr-V-Zn-P contents; (2) Southwestern Banks Island, characterized by high dolomite-K-feldspar and Ca-Mg-LOI contents; (3) the Central Amundsen Gulf, a transitional zone typified by intermediate phyllosilicate-magnetite-K-feldspar-dolomite and Al-K-Ti-Fe-Mn-V-Zn-Sr-Ca-Mg-LOI contents; and (4) mud volcanoes on the Canadian Beaufort Shelf distinguished by poorly sorted coarse-silt with high quartz-plagioclase-authigenic carbonate and Si-Zr contents, as well as high magnetic susceptibility. Our results also confirm that the present-day sedimentary dynamics on the Canadian Beaufort Shelf is mainly controlled by sediment supply from the Mackenzie River. Overall, these insights provide a basis for future studies using mineralogical, geochemical, and magnetic signatures of Canadian Arctic sediments in order to reconstruct past variations in sediment inputs and transport pathways related to late Quaternary climate and oceanographic changes. Dataset Amundsen Gulf Arctic Arctic Banks Island Beaufort Sea Mackenzie river Magnetic susceptibility PANGAEA - Data Publisher for Earth & Environmental Science Arctic Beaufort Shelf ENVELOPE(-142.500,-142.500,70.000,70.000) Mackenzie River MacKenzie Trough ENVELOPE(-138.025,-138.025,69.528,69.528) ENVELOPE(-138.597000,-122.630000,71.907000,69.488000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Mineralogical, geochemical, magnetic, and siliciclastic grain-size signatures of 34 surface sediment samples from the Mackenzie-Beaufort Sea Slope and Amundsen Gulf were studied in order to better constrain the redox status, detrital particle provenance, and sediment dynamics in the western Canadian Arctic. Redox-sensitive elements (Mn, Fe, V, Cr, Zn) indicate that modern sedimentary deposition within the Mackenzie-Beaufort Sea Slope and Amundsen Gulf took place under oxic bottom-water conditions, with more turbulent mixing conditions and thus a well-oxygenated water column prevailing within the Amundsen Gulf. The analytical data obtained, combined with multivariate statistical (notably, principal component and fuzzy c-means clustering analyses) and spatial analyses, allowed the division of the study area into four provinces with distinct sedimentary compositions: (1) the Mackenzie Trough-Canadian Beaufort Shelf with high phyllosilicate-Fe oxide-magnetite and Al-K-Ti-Fe-Cr-V-Zn-P contents; (2) Southwestern Banks Island, characterized by high dolomite-K-feldspar and Ca-Mg-LOI contents; (3) the Central Amundsen Gulf, a transitional zone typified by intermediate phyllosilicate-magnetite-K-feldspar-dolomite and Al-K-Ti-Fe-Mn-V-Zn-Sr-Ca-Mg-LOI contents; and (4) mud volcanoes on the Canadian Beaufort Shelf distinguished by poorly sorted coarse-silt with high quartz-plagioclase-authigenic carbonate and Si-Zr contents, as well as high magnetic susceptibility. Our results also confirm that the present-day sedimentary dynamics on the Canadian Beaufort Shelf is mainly controlled by sediment supply from the Mackenzie River. Overall, these insights provide a basis for future studies using mineralogical, geochemical, and magnetic signatures of Canadian Arctic sediments in order to reconstruct past variations in sediment inputs and transport pathways related to late Quaternary climate and oceanographic changes. |
format |
Dataset |
author |
Gamboa, Adriana Montero-Serrano, Jean-Carlos St-Onge, Guillaume Rochon, André Desiage, Pierre-Arnaud |
spellingShingle |
Gamboa, Adriana Montero-Serrano, Jean-Carlos St-Onge, Guillaume Rochon, André Desiage, Pierre-Arnaud Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
author_facet |
Gamboa, Adriana Montero-Serrano, Jean-Carlos St-Onge, Guillaume Rochon, André Desiage, Pierre-Arnaud |
author_sort |
Gamboa, Adriana |
title |
Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
title_short |
Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
title_full |
Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
title_fullStr |
Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
title_full_unstemmed |
Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic) |
title_sort |
mineralogical, geochemical and magnetic signatures of surface sediments from the canadian beaufort shelf and amundsen gulf (canadian arctic) |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.866871 https://doi.org/10.1594/PANGAEA.866871 |
op_coverage |
MEDIAN LATITUDE: 70.562106 * MEDIAN LONGITUDE: -130.901482 * SOUTH-BOUND LATITUDE: 69.488000 * WEST-BOUND LONGITUDE: -138.597000 * NORTH-BOUND LATITUDE: 71.907000 * EAST-BOUND LONGITUDE: -122.630000 |
long_lat |
ENVELOPE(-142.500,-142.500,70.000,70.000) ENVELOPE(-138.025,-138.025,69.528,69.528) ENVELOPE(-138.597000,-122.630000,71.907000,69.488000) |
geographic |
Arctic Beaufort Shelf Mackenzie River MacKenzie Trough |
geographic_facet |
Arctic Beaufort Shelf Mackenzie River MacKenzie Trough |
genre |
Amundsen Gulf Arctic Arctic Banks Island Beaufort Sea Mackenzie river Magnetic susceptibility |
genre_facet |
Amundsen Gulf Arctic Arctic Banks Island Beaufort Sea Mackenzie river Magnetic susceptibility |
op_source |
Supplement to: Gamboa, Adriana; Montero-Serrano, Jean-Carlos; St-Onge, Guillaume; Rochon, André; Desiage, Pierre-Arnaud (2017): Mineralogical, geochemical and magnetic signatures of surface sediments from the Canadian Beaufort Shelf and Amundsen Gulf (Canadian Arctic). Geochemistry, Geophysics, Geosystems, 18(2), 488-512, https://doi.org/10.1002/2016GC006477 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.866871 https://doi.org/10.1594/PANGAEA.866871 |
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.866871 https://doi.org/10.1002/2016GC006477 |
_version_ |
1766367300891443200 |