Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55
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...
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ftdatacite:10.1594/pangaea.859107 2023-05-15T14:52:00+02:00 Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 Bazhenova, Evgenia A Fagel, Nathalie Stein, Ruediger 2017 application/zip https://dx.doi.org/10.1594/pangaea.859107 https://doi.pangaea.de/10.1594/PANGAEA.859107 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.margeo.2017.01.010 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Collection article Supplementary Collection of Datasets 2017 ftdatacite https://doi.org/10.1594/pangaea.859107 https://doi.org/10.1016/j.margeo.2017.01.010 2021-11-05T12:55:41Z 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 e-Nd. 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. Article in Journal/Newspaper Arctic Arctic Ocean Chukchi Iceberg* laptev Laptev Sea DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Laptev Sea Bazhenova ENVELOPE(161.737,161.737,55.395,55.395) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Bazhenova, Evgenia A Fagel, Nathalie Stein, Ruediger Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
topic_facet |
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
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 e-Nd. 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. |
format |
Article in Journal/Newspaper |
author |
Bazhenova, Evgenia A Fagel, Nathalie Stein, Ruediger |
author_facet |
Bazhenova, Evgenia A Fagel, Nathalie Stein, Ruediger |
author_sort |
Bazhenova, Evgenia A |
title |
Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
title_short |
Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
title_full |
Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
title_fullStr |
Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
title_full_unstemmed |
Radiogenic lead and neodymium composition of surface sediments from the Arctic Ocean, supplement to: Bazhenova, Evgenia A; Fagel, Nathalie; Stein, Ruediger (2017): 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. Marine Geology, 386, 44-55 |
title_sort |
radiogenic lead and neodymium composition of surface sediments from the arctic ocean, supplement to: bazhenova, evgenia a; fagel, nathalie; stein, ruediger (2017): 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. marine geology, 386, 44-55 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2017 |
url |
https://dx.doi.org/10.1594/pangaea.859107 https://doi.pangaea.de/10.1594/PANGAEA.859107 |
long_lat |
ENVELOPE(161.737,161.737,55.395,55.395) |
geographic |
Arctic Arctic Ocean Laptev Sea Bazhenova |
geographic_facet |
Arctic Arctic Ocean Laptev Sea Bazhenova |
genre |
Arctic Arctic Ocean Chukchi Iceberg* laptev Laptev Sea |
genre_facet |
Arctic Arctic Ocean Chukchi Iceberg* laptev Laptev Sea |
op_relation |
https://dx.doi.org/10.1016/j.margeo.2017.01.010 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.859107 https://doi.org/10.1016/j.margeo.2017.01.010 |
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1766323127011246080 |