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Börner, Nicole; Jochum, Klaus Peter; Stuhr, Marleen; Abstein, Michelle; Plessen, Birgit; Frenzel, Peter; Wang, Junbo; Zhu, Liping; Schwalb, Antje (2022): Trace elements, stable isotopes and rare earth elements in ostracod valves from sediment cores from Lake Nam Co and Tangra Yumco, Tibetan Plateau [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.941495

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Published: 2022-02-25 • DOI registered: 2022-08-26

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Abstract:
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.
Keyword(s):
Ostracoda; Paleoclimate; Paleolimnology; Rare earth elements; Stable carbon and oxygen isotopes; trace elements ratio
Supplement to:
Börner, Nicole; Jochum, Klaus Peter; Stuhr, Marleen; Abstein, Michelle; Plessen, Birgit; Frenzel, Peter; Wang, Junbo; Zhu, Liping; Schwalb, Antje (2022): Late Quaternary changes in moisture availability and weathering intensity on the central Tibetan Plateau indicated by chemical signatures of ostracod shells. Frontiers in Earth Science, 10, 826143, https://doi.org/10.3389/feart.2022.826143
Funding:
German Research Foundation (DFG), grant/award no. 202964542: Microfossils as indicators of aquatic ecosystem evolution and monsoon dynamics
German Research Foundation (DFG), grant/award no. 58017702: SPP 1372: Tibetan Plateau: Formation - Climate - Ecosystems (TIP)
Coverage:
Median Latitude: 30.994960 * Median Longitude: 88.756580 * South-bound Latitude: 30.737420 * West-bound Longitude: 86.722830 * North-bound Latitude: 31.252500 * East-bound Longitude: 90.790330
Date/Time Start: 2008-09-15T00:00:00 * Date/Time End: 2008-09-15T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
4 datasets

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Datasets listed in this bundled publication

  1. Börner, N; Jochum, KP; Stuhr, M et al. (2022): Trace elements in ostracod valves of NC08/01 from Nam Co (Table 1). https://doi.org/10.1594/PANGAEA.941492
  2. Börner, N; Jochum, KP; Stuhr, M et al. (2022): Trace elements in ostracod valves of TAN12-2 from Tangra Yumco (Table 2). https://doi.org/10.1594/PANGAEA.941494
  3. Börner, N; Jochum, KP; Stuhr, M et al. (2022): Stable isotopes in ostracod shells of core NC08/01 (Table 3). https://doi.org/10.1594/PANGAEA.941486
  4. Börner, N; Jochum, KP; Stuhr, M et al. (2022): Stable isotopes in bulk sediment TAN12-2 (Table 4). https://doi.org/10.1594/PANGAEA.941487