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Meixner, Anette; Alonso, Ricardo N; Lucassen, Friedrich; Korte, Laura F; Kasemann, Simone A (2021): Stable and radiogenic isotope composition of salar deposits in the Central Andes [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.928849

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Abstract:
The Central Andes of South America hosts the largest known lithium anomalies in a restricted area, but the primary lithium sources of the salar deposits and the mobilization process of lithium are still a matter of speculation. Chemical weathering at or near the surface and leaching in hydrothermal systems of the active magmatic arc are considered as the two main mechanisms of Li extraction from the source rock. The lithium and strontium isotope composition of typical salar deposits offer insights into the processes on how Li brine deposits in Andean evaporites are formed. Data from the Salar de Pozuelos indicate surface near chemical weathering in a cold and dry climate as the dominant mobilization process of Li, with evaporation being responsible for the enrichment. The Cenozoic ignimbrites are the favourite source rock for the Li, with subordinate additions from the Palaeozoic basement. The identification of the source rocks is supported by radiogenic Nd and Pb, and stable B isotope data from salar deposits. A comparison with other Li brine and salt deposits in the Altiplano-Puna Plateau and its western foothills places the Salar de Pozuelos as an endmember of Li solubilisation by surface near chemical weathering with only minor hydrothermal mobilization of Li.
Keyword(s):
Central Andes; Lithium deposits; Lithium isotopes; Salar deposits
Supplement to:
Meixner, Anette; Sarchi, Carisa; Lucassen, Friedrich; Becchio, Raúl A; Caffe, Pablo J; Lindsay, Jan; Rosner, Martin; Kasemann, Simone A (2020): Lithium concentrations and isotope signatures of Palaeozoic basement rocks and Cenozoic volcanic rocks from the Central Andean arc and back-arc. Mineralium Deposita, 55(6), 1071-1084, https://doi.org/10.1007/s00126-019-00915-2
Coverage:
Median Latitude: -24.446697 * Median Longitude: -67.164416 * South-bound Latitude: -26.511389 * West-bound Longitude: -69.266694 * North-bound Latitude: -18.341000 * East-bound Longitude: -66.747306
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
11 datasets

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Datasets listed in this bundled publication

  1. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Hydrogen and oxygen isotope data for fluid samples (Table A1). https://doi.org/10.1594/PANGAEA.928763
  2. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Neodymium and lead isotope data for the catchment and the salar sediments (Table A2). https://doi.org/10.1594/PANGAEA.928767
  3. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Radiogenic isotope data from a Diamond Core Drill Hole of Salar de Pozuelos (Table A3). https://doi.org/10.1594/PANGAEA.928772
  4. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Lithium, boron and strontium isotope compsition from Travertine (Table A4). https://doi.org/10.1594/PANGAEA.928778
  5. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Elemental concentration values (ICP-OES) of brine and salt surface samples, Salar de Pozuelos (Table A5). https://doi.org/10.1594/PANGAEA.928834
  6. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Elemental concentration values in salt samples from the Diamond Core Drill Holes of Salar de Pozuelos (Table A6). https://doi.org/10.1594/PANGAEA.928810
  7. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Elemental concentration values of spring water and brine samples from the Lithium Triangle (Table A7). https://doi.org/10.1594/PANGAEA.928836
  8. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Isotope and concentration data for the catchment and the salar sediments (Table 2). https://doi.org/10.1594/PANGAEA.928797
  9. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Isotope and concentration data for fluid and salt surface samples (Table 3). https://doi.org/10.1594/PANGAEA.928840
  10. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Isotope and concentration data for the Diamond Core Drill Holes of Salar de Pozuelos (Table 4). https://doi.org/10.1594/PANGAEA.928884
  11. Meixner, A; Alonso, RN; Lucassen, F et al. (2021): Isotope and concentration data for samples from the Lithium Triangle (Table 5). https://doi.org/10.1594/PANGAEA.928841