Trace elements, stable isotopes and rare earth elements in ostracod valves from sediment cores from Lake Nam Co and Tangra Yumco, Tibetan Plateau
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| Main Authors: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2022
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| _version_ | 1867167679812468736 |
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| author | Börner, Nicole Jochum, Klaus Peter Stuhr, Marleen Abstein, Michelle Plessen, Birgit Frenzel, Peter Wang, Junbo Zhu, Liping Schwalb, Antje |
| author_facet | Börner, Nicole Jochum, Klaus Peter Stuhr, Marleen Abstein, Michelle Plessen, Birgit Frenzel, Peter Wang, Junbo Zhu, Liping Schwalb, Antje |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | High-resolution multi-proxy records from two lakes on the southern Tibetan Plateau, Nam Co and Tangra Yumco, are used to infer long-term variations in the Asian monsoon system. We examine the moisture evolution during the Late Glacial Maximum and Holocene using the trace element and stable isotope composition of ostracod shells. The sediment records covering the past 24 cal. ka BP and 18 cal. ka BP, respectively, demonstrate the suitability of ostracod shell chemistry as paleoenvironmental proxy. We analysed (i) Mg/Ca, Ba/Ca and Sr/Ca ratios as salinity proxies, (ii) Fe/Ca, Mn/Ca and U/Ca ratios representing redox conditions and microbial activity, and (iii) rare earth elements (REEs) reflecting weathering and changes in provenance. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_941495 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Trace elements, stable isotopes and rare earth elements in ostracod valves from sediment cores from Lake Nam Co and Tangra Yumco, Tibetan Plateau Börner, Nicole Jochum, Klaus Peter Stuhr, Marleen Abstein, Michelle Plessen, Birgit Frenzel, Peter Wang, Junbo Zhu, Liping Schwalb, Antje Ostracoda; Paleoclimate; Paleolimnology; Rare earth elements; Stable carbon and oxygen isotopes; trace elements ratio High-resolution multi-proxy records from two lakes on the southern Tibetan Plateau, Nam Co and Tangra Yumco, are used to infer long-term variations in the Asian monsoon system. We examine the moisture evolution during the Late Glacial Maximum and Holocene using the trace element and stable isotope composition of ostracod shells. The sediment records covering the past 24 cal. ka BP and 18 cal. ka BP, respectively, demonstrate the suitability of ostracod shell chemistry as paleoenvironmental proxy. We analysed (i) Mg/Ca, Ba/Ca and Sr/Ca ratios as salinity proxies, (ii) Fe/Ca, Mn/Ca and U/Ca ratios representing redox conditions and microbial activity, and (iii) rare earth elements (REEs) reflecting weathering and changes in provenance. |
| title | Trace elements, stable isotopes and rare earth elements in ostracod valves from sediment cores from Lake Nam Co and Tangra Yumco, Tibetan Plateau |
| topic | Ostracoda; Paleoclimate; Paleolimnology; Rare earth elements; Stable carbon and oxygen isotopes; trace elements ratio |
| url | https://doi.org/10.1594/PANGAEA.941495 |