North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component
peer reviewed Dolomite–rich layers of distinct pinkish colour are used as lithostratigraphic markers in the Amerasian Basin of the Arctic Ocean. However, origin of dolomite in these sediment units has not been studied in detail. In this study, lead (Pb) and neodymium (Nd) isotope composition of detr...
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Language: | English |
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Elsevier B.V.
2017
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Online Access: | https://orbi.uliege.be/handle/2268/222571 https://doi.org/10.1016/j.margeo.2017.01.010 |
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ftorbi:oai:orbi.ulg.ac.be:2268/222571 2024-04-21T07:55:22+00:00 North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component Bazhenova, E. Fagel, Nathalie Stein, R. 2017 https://orbi.uliege.be/handle/2268/222571 https://doi.org/10.1016/j.margeo.2017.01.010 en eng Elsevier B.V. urn:issn:0025-3227 urn:issn:1872-6151 https://orbi.uliege.be/handle/2268/222571 info:hdl:2268/222571 doi:10.1016/j.margeo.2017.01.010 scopus-id:2-s2.0-85014100939 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Marine Geology, 386, 44-55 (2017) Arctic Ocean Detrital fraction Late Quaternary Pd and Nd isotopes Pink–white layers Sediment provenance Analytical geochemistry Isotopes Lead Mixing Neodymium Sea ice Detrital fractions Nd isotopes White layer Sediments Quaternary Amerasian Basin Chukchi Sea East Siberian Sea Laptev Sea Mendeleyev Ridge North America Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2017 ftorbi https://doi.org/10.1016/j.margeo.2017.01.010 2024-03-27T14:59:27Z peer reviewed Dolomite–rich layers of distinct pinkish colour are used as lithostratigraphic markers in the Amerasian Basin of the Arctic Ocean. However, origin of dolomite in these sediment units has not been studied in detail. In this study, lead (Pb) and neodymium (Nd) isotope composition of detrital clay–size fraction from different lithofacies were investigated in core PS72/340-5 recovered at the eastern flank of the Mendeleev Ridge. Prior to the geochemical analyses, grain–size distribution was analyzed in order to minimize the grain–size effect on the provenance signature. For provenance discrimination, results of isotope measurements were compared with marine surface sediment data and values for the circum–Arctic subaerial provinces. Late Quaternary sediment supply variability was analyzed using the mixing model constrained by two tracers: 207Pb/206Pb and εNd. Variations of sediment isotopic composition are inferred to result from mixing of volcanic and plutonic components. Usage of Pb isotopic ratios alone does not allow distinction between these two types of sources. Results confirm that over the last estimated ca. 200 ka dolomite–rich pink layers at the Mendeleev Ridge were deposited during events probably associated with intensified iceberg transport from North America. In general, however, sedimentation was mostly controlled by terrigenous input from the Chukchi and East Siberian Seas, whereas sediment supply from the Laptev Sea area remained less important and relatively constant at the studied location. © 2017 Elsevier B.V. Article in Journal/Newspaper Arctic Ocean Chukchi Chukchi Sea East Siberian Sea Iceberg* laptev Laptev Sea Sea ice University of Liège: ORBi (Open Repository and Bibliography) Marine Geology 386 44 55 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Arctic Ocean Detrital fraction Late Quaternary Pd and Nd isotopes Pink–white layers Sediment provenance Analytical geochemistry Isotopes Lead Mixing Neodymium Sea ice Detrital fractions Nd isotopes White layer Sediments Quaternary Amerasian Basin Chukchi Sea East Siberian Sea Laptev Sea Mendeleyev Ridge North America Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Arctic Ocean Detrital fraction Late Quaternary Pd and Nd isotopes Pink–white layers Sediment provenance Analytical geochemistry Isotopes Lead Mixing Neodymium Sea ice Detrital fractions Nd isotopes White layer Sediments Quaternary Amerasian Basin Chukchi Sea East Siberian Sea Laptev Sea Mendeleyev Ridge North America Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Bazhenova, E. Fagel, Nathalie Stein, R. North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
topic_facet |
Arctic Ocean Detrital fraction Late Quaternary Pd and Nd isotopes Pink–white layers Sediment provenance Analytical geochemistry Isotopes Lead Mixing Neodymium Sea ice Detrital fractions Nd isotopes White layer Sediments Quaternary Amerasian Basin Chukchi Sea East Siberian Sea Laptev Sea Mendeleyev Ridge North America Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Dolomite–rich layers of distinct pinkish colour are used as lithostratigraphic markers in the Amerasian Basin of the Arctic Ocean. However, origin of dolomite in these sediment units has not been studied in detail. In this study, lead (Pb) and neodymium (Nd) isotope composition of detrital clay–size fraction from different lithofacies were investigated in core PS72/340-5 recovered at the eastern flank of the Mendeleev Ridge. Prior to the geochemical analyses, grain–size distribution was analyzed in order to minimize the grain–size effect on the provenance signature. For provenance discrimination, results of isotope measurements were compared with marine surface sediment data and values for the circum–Arctic subaerial provinces. Late Quaternary sediment supply variability was analyzed using the mixing model constrained by two tracers: 207Pb/206Pb and εNd. Variations of sediment isotopic composition are inferred to result from mixing of volcanic and plutonic components. Usage of Pb isotopic ratios alone does not allow distinction between these two types of sources. Results confirm that over the last estimated ca. 200 ka dolomite–rich pink layers at the Mendeleev Ridge were deposited during events probably associated with intensified iceberg transport from North America. In general, however, sedimentation was mostly controlled by terrigenous input from the Chukchi and East Siberian Seas, whereas sediment supply from the Laptev Sea area remained less important and relatively constant at the studied location. © 2017 Elsevier B.V. |
format |
Article in Journal/Newspaper |
author |
Bazhenova, E. Fagel, Nathalie Stein, R. |
author_facet |
Bazhenova, E. Fagel, Nathalie Stein, R. |
author_sort |
Bazhenova, E. |
title |
North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
title_short |
North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
title_full |
North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
title_fullStr |
North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
title_full_unstemmed |
North American origin of “pink–white” layers at the Mendeleev Ridge (Arctic Ocean): New insights from lead and neodymium isotope composition of detrital sediment component |
title_sort |
north american origin of “pink–white” layers at the mendeleev ridge (arctic ocean): new insights from lead and neodymium isotope composition of detrital sediment component |
publisher |
Elsevier B.V. |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/222571 https://doi.org/10.1016/j.margeo.2017.01.010 |
genre |
Arctic Ocean Chukchi Chukchi Sea East Siberian Sea Iceberg* laptev Laptev Sea Sea ice |
genre_facet |
Arctic Ocean Chukchi Chukchi Sea East Siberian Sea Iceberg* laptev Laptev Sea Sea ice |
op_source |
Marine Geology, 386, 44-55 (2017) |
op_relation |
urn:issn:0025-3227 urn:issn:1872-6151 https://orbi.uliege.be/handle/2268/222571 info:hdl:2268/222571 doi:10.1016/j.margeo.2017.01.010 scopus-id:2-s2.0-85014100939 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2017.01.010 |
container_title |
Marine Geology |
container_volume |
386 |
container_start_page |
44 |
op_container_end_page |
55 |
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1796937484326666240 |