Articles | Volume 5, issue 2
Research article
08 Aug 2023
Research article |  | 08 Aug 2023

Spatial variability of the modern radiocarbon reservoir effect in the high-altitude lake Laguna del Peinado (southern Puna Plateau, Argentina)

Paula A. Vignoni, Francisco E. Córdoba, Rik Tjallingii, Carla Santamans, Liliana C. Lupo, and Achim Brauer

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Cited articles

Allmendinger, R. W., Jordan, T. E., Kay, S. M., and Isacks, B. L.: The evolution of the Altiplano-Puna Plateau of the Central Andes, Annu. Rev. Earth Pl. Sc., 25, 139–174,, 1997. 
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Bianchi, M., Heit, B., Jakovlev, A., Yuan, X., Kay, S. M., Sandvol, E., Alonso, R. N., Coira, B., Brown, L., Kind, R., and Comte, D.: Teleseismic tomography of the southern Puna plateau in Argentina and adjacent regions, 586, 65–83,, 2013. 
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Short summary
Radiocarbon dating is a widely used tool to establish chronologies for sediment records. We show that modern aquatic plants in the Laguna del Peinado lake system (Altiplano–Puna Plateau) give overestimated ages due to reservoir effects from the input of old groundwater and volcanic CO2. Our results reveal a spatial variability in the modern reservoir effect within the lake basin, which has implications for radiocarbon-based chronologies in paleoclimate studies in this (and similar) regions.