Sr-Nd-Pb isotope composition of the siliciclastic sediment fraction of two marine sediment cores (GeoB22346-3, GeoB22357-3) from the Clyde Inlet area, northeastern Baffin Island
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2025
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| _version_ | 1867170121335701504 |
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| author | Hingst, Johanna Okuma, Emmanuel Lucassen, Friedrich Kasemann, Simone A |
| author_facet | Hingst, Johanna Okuma, Emmanuel Lucassen, Friedrich Kasemann, Simone A |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Sr-Nd-Pb isotope composition of the siliciclastic sediment fraction of the two marine sediment cores GeoB22346-3 and GeoB22357-3, raised within and off the Clyde Inlet, provide insight into changes in sediment provenances during the late Pleistocene and the Holocene. Variable radiogenic isotope ratios also give evidence about a changing glacier extent on the northeastern Baffin Island and the adjacent shelf as well as changing oceanographic conditions in western Baffin Bay. Sample preparation and radiogenic isotope analysis were conducted in the laboratories of the Isotope Geochemistry Group at MARUM – Center for Marine Environmental Sciences, University of Bremen, Germany. All sediment samples were leached with a NaOH-buffered solution of hydroxylamine hydrochloride and 15% acetic acid to separate the siliciclastic sediment fraction (adapted from Gutjahr et al. 2007, , https://doi.org/10.1016/j.chemgeo.2007.03.021). Sr, Nd, and Pb were separated by column chemistry, and the isotope ratios were measured with a Thermo-Fisher Scientific TRITON Plus thermal ionization mass spectrometer (TIMS). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_962138 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sr-Nd-Pb isotope composition of the siliciclastic sediment fraction of two marine sediment cores (GeoB22346-3, GeoB22357-3) from the Clyde Inlet area, northeastern Baffin Island Hingst, Johanna Okuma, Emmanuel Lucassen, Friedrich Kasemann, Simone A AGE; ArcTrain; Baffin Bay; Baffin Island; Calculated relative to the Chondritic Uniform Reservoir (CHUR) value of 143Nd/144Nd=0.512638 according to Jacobsen and Wasserburg (1980); Clyde River Inlet; Corrected by a bulk uncertainty of 0.1 % per atomic mass unit; DEPTH, sediment/rock; Event label; GC; GeoB22346-3; GeoB22357-3; Gravity corer; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, standard deviation; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, standard deviation; Maria S. Merian; MSM66; MSM66_46-3; MSM66_57-3; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Radiogenic isotopes; Sample code/label; Sediment provenance; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; Thermal ionization mass spectrometer, Thermo-Fisher Scientific, TRITON Plus; ε-Neodymium The Sr-Nd-Pb isotope composition of the siliciclastic sediment fraction of the two marine sediment cores GeoB22346-3 and GeoB22357-3, raised within and off the Clyde Inlet, provide insight into changes in sediment provenances during the late Pleistocene and the Holocene. Variable radiogenic isotope ratios also give evidence about a changing glacier extent on the northeastern Baffin Island and the adjacent shelf as well as changing oceanographic conditions in western Baffin Bay. Sample preparation and radiogenic isotope analysis were conducted in the laboratories of the Isotope Geochemistry Group at MARUM – Center for Marine Environmental Sciences, University of Bremen, Germany. All sediment samples were leached with a NaOH-buffered solution of hydroxylamine hydrochloride and 15% acetic acid to separate the siliciclastic sediment fraction (adapted from Gutjahr et al. 2007, , https://doi.org/10.1016/j.chemgeo.2007.03.021). Sr, Nd, and Pb were separated by column chemistry, and the isotope ratios were measured with a Thermo-Fisher Scientific TRITON Plus thermal ionization mass spectrometer (TIMS). |
| title | Sr-Nd-Pb isotope composition of the siliciclastic sediment fraction of two marine sediment cores (GeoB22346-3, GeoB22357-3) from the Clyde Inlet area, northeastern Baffin Island |
| topic | AGE; ArcTrain; Baffin Bay; Baffin Island; Calculated relative to the Chondritic Uniform Reservoir (CHUR) value of 143Nd/144Nd=0.512638 according to Jacobsen and Wasserburg (1980); Clyde River Inlet; Corrected by a bulk uncertainty of 0.1 % per atomic mass unit; DEPTH, sediment/rock; Event label; GC; GeoB22346-3; GeoB22357-3; Gravity corer; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, standard deviation; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, standard deviation; Maria S. Merian; MSM66; MSM66_46-3; MSM66_57-3; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Radiogenic isotopes; Sample code/label; Sediment provenance; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; Thermal ionization mass spectrometer, Thermo-Fisher Scientific, TRITON Plus; ε-Neodymium |
| url | https://doi.org/10.1594/PANGAEA.962138 |