Radioactive isotope analysis of sediment core PS115/2_2
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2025
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| _version_ | 1867172205235798016 |
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| author | Stein, Ruediger Frederichs, Thomas Fahl, Kirsten Geibert, Walter Matthiessen, Jens Niessen, Frank Vogt, Christoph Sassenroth, Cynthia Bazhenova, Evgenia A |
| author_facet | Stein, Ruediger Frederichs, Thomas Fahl, Kirsten Geibert, Walter Matthiessen, Jens Niessen, Frank Vogt, Christoph Sassenroth, Cynthia Bazhenova, Evgenia A |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sediment Core PS115/2-2 was recovered from the Amundsen Basin in 3600 m water depth at the eastern flank of the Gakkel Ridge during Polarstern Expedition PS115/2 in 2018 (Stein, 2019). The well-dated core is used to reconstruct in detail the interrelationship between ice-sheet dynamics and organic carbon burial in the central Eurasian Basin during the last 430 kyr, and to correlate marine and terrestrial records of the Eurasian Ice Sheet (EIS) history. Our age model, a fundamental prerequisite for any kind of paleoclimatic reconstruction, is based on magnetostratigraphy, 230Th and 231Pa excess (230Thex and 231Paex) records, and AMS14C ages. The radioisotopes 230Th, 232Th, 231Pa, 234U and 235U (238U) were analysed by means of isotope dilution sector field ICP-mass spectrometry (SF-ICP-MS). As independent age control proxies, extinction ages of 230Thex and 231Paex have been determined (cf., Hillaire-Marcell et al., 2017; Geibert et al., 2021; Song et al., 2023). For details and methods, we refer to Stein et al. (this paper). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_975840 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Radioactive isotope analysis of sediment core PS115/2_2 Stein, Ruediger Frederichs, Thomas Fahl, Kirsten Geibert, Walter Matthiessen, Jens Niessen, Frank Vogt, Christoph Sassenroth, Cynthia Bazhenova, Evgenia A AGE; Arctic Ocean; BC; Box corer; DEPTH, sediment/rock; Eurasian Ice Sheet History; Event label; Giant box corer; GKG; Isotope dilution, SF-ICP-MS; Late Pleistocene; Organic carbon (OC) burial; Polarstern; Protactinium-231; Protactinium-231, standard deviation; Protactinium-231 excess; Protactinium-231 excess, standard deviation; PS115/2; PS115/2_2-1; PS115/2_2-2; Thorium-230; Thorium-230, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-235; Uranium-235, standard deviation; Uranium-238; Uranium-238, standard deviation Sediment Core PS115/2-2 was recovered from the Amundsen Basin in 3600 m water depth at the eastern flank of the Gakkel Ridge during Polarstern Expedition PS115/2 in 2018 (Stein, 2019). The well-dated core is used to reconstruct in detail the interrelationship between ice-sheet dynamics and organic carbon burial in the central Eurasian Basin during the last 430 kyr, and to correlate marine and terrestrial records of the Eurasian Ice Sheet (EIS) history. Our age model, a fundamental prerequisite for any kind of paleoclimatic reconstruction, is based on magnetostratigraphy, 230Th and 231Pa excess (230Thex and 231Paex) records, and AMS14C ages. The radioisotopes 230Th, 232Th, 231Pa, 234U and 235U (238U) were analysed by means of isotope dilution sector field ICP-mass spectrometry (SF-ICP-MS). As independent age control proxies, extinction ages of 230Thex and 231Paex have been determined (cf., Hillaire-Marcell et al., 2017; Geibert et al., 2021; Song et al., 2023). For details and methods, we refer to Stein et al. (this paper). |
| title | Radioactive isotope analysis of sediment core PS115/2_2 |
| topic | AGE; Arctic Ocean; BC; Box corer; DEPTH, sediment/rock; Eurasian Ice Sheet History; Event label; Giant box corer; GKG; Isotope dilution, SF-ICP-MS; Late Pleistocene; Organic carbon (OC) burial; Polarstern; Protactinium-231; Protactinium-231, standard deviation; Protactinium-231 excess; Protactinium-231 excess, standard deviation; PS115/2; PS115/2_2-1; PS115/2_2-2; Thorium-230; Thorium-230, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-235; Uranium-235, standard deviation; Uranium-238; Uranium-238, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.975840 |