Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) First lithium isotope data from rivers and subsurface water in the Pamirs
Autor Meier, C.; Osenbrück, K.; Seitz, H.-M.; Weise, S.M.;
Journal / Serie Procedia Earth and Planetary Science
Erscheinungsjahr 2017
Department CATHYD;
Band/Volume 17
Sprache englisch;
POF III (gesamt) T34;
Keywords Lithium isotopes; river water; ground water; granite; Pamir; Central Asia
UFZ Querschnittsthemen RU2;
Abstract Lithium and its isotopes has generally been used as a proxy for silicate weathering and only in a few case studies investigated the link between Lithium isotope systematics of surface and ground waters with respect to residence times in crustal reservoirs and aquifers. However, the processes controlling the Lithium isotope fractionation in such systems are not fully understood, yet. In order to gain a better understanding of how Lithium isotopes are fractionated in large catchments we analyzed Lithium concentrations and Lithium isotope compositions of different water reservoirs (rivers, groundwater, thermal water and lakes) of a high alpine granitic catchment in the Pamir Mountains. We also determined the Lithium concentration and Lithium isotope composition of the (granitic) basement as well as the suspended particulate matter (SPM) in the waters. We observe large isotopic variations in the water samples (from δ7Li = +3 to +36‰) and light isotopic compositions for the bedrock and SPM (δ7Li = -14 to +1.5‰). The wide span of Li isotope composition in the water samples reflects the weathering of silicate rock along the flow path of the (sub) surface water within the catchment.
ID 18445
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18445
Meier, C., Osenbrück, K., Seitz, H.-M., Weise, S.M. (2017):
First lithium isotope data from rivers and subsurface water in the Pamirs
Procedia Earth Planet. Sci. 17 , 574 - 577