14C AMS dates of unidentified organic material from the ice wedges of the Batagay Yedoma and its stable isotope сcomposition
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2025
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| author | Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna Budantseva, Nadine A Vasil'chuk, Jessica Yurevna Ginzburg, Alexander P |
| author_facet | Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna Budantseva, Nadine A Vasil'chuk, Jessica Yurevna Ginzburg, Alexander P |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Detailed sampling of two syngenetic ice wedges (IW-17 and IW-20) for isotope analysis was carried out in the exposure of the thermo-erosional ravine in the southeastern part of the Batagay megaslump. In total, results of 105 measurements for IW-17 and 59 measurements for IW-20 were obtained. According to 14C AMS ages of organic microinclusions in the ice-wedge ice, the studied ice wedges began to form no later than 42 cal ka BP. The termination of their growth was dated to about 11.7 cal ka BP. For both ice wedges, generally low isotope values were obtained. For the IW-17,the mean values are −34.38‰ for δ18O, -264.82‰ for δ2H, and 10.2‰ for dexc. For IW-20, the mean isotope values are −34.09‰ for δ18O, −262.91‰ for δ2H, and 9.84‰ for dexc. Statistical tests showed significant correlations between the isotope data in the upper parts of ice wedges that may be explained by similar conditions during their growth at this stage. Our results allow us to refine the solutions to the two main issues studies of the Late Pleistocene Yedoma: the age of the ice wedges, the accuracy of the isotope profiles, and the paleotemperature interpretation of the isotope records. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_979963 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | 14C AMS dates of unidentified organic material from the ice wedges of the Batagay Yedoma and its stable isotope сcomposition Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna Budantseva, Nadine A Vasil'chuk, Jessica Yurevna Ginzburg, Alexander P Ice wedges; mean January paleotemperature; Northern Yakutia; Radiocarbon age; Stable isotopes; Yedoma Detailed sampling of two syngenetic ice wedges (IW-17 and IW-20) for isotope analysis was carried out in the exposure of the thermo-erosional ravine in the southeastern part of the Batagay megaslump. In total, results of 105 measurements for IW-17 and 59 measurements for IW-20 were obtained. According to 14C AMS ages of organic microinclusions in the ice-wedge ice, the studied ice wedges began to form no later than 42 cal ka BP. The termination of their growth was dated to about 11.7 cal ka BP. For both ice wedges, generally low isotope values were obtained. For the IW-17,the mean values are −34.38‰ for δ18O, -264.82‰ for δ2H, and 10.2‰ for dexc. For IW-20, the mean isotope values are −34.09‰ for δ18O, −262.91‰ for δ2H, and 9.84‰ for dexc. Statistical tests showed significant correlations between the isotope data in the upper parts of ice wedges that may be explained by similar conditions during their growth at this stage. Our results allow us to refine the solutions to the two main issues studies of the Late Pleistocene Yedoma: the age of the ice wedges, the accuracy of the isotope profiles, and the paleotemperature interpretation of the isotope records. |
| title | 14C AMS dates of unidentified organic material from the ice wedges of the Batagay Yedoma and its stable isotope сcomposition |
| topic | Ice wedges; mean January paleotemperature; Northern Yakutia; Radiocarbon age; Stable isotopes; Yedoma |
| url | https://doi.org/10.1594/PANGAEA.979963 |