Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1155/2019/6727681
Lizenz creative commons licence
Titel (primär) Applying rare earth elements, uranium, and 87Sr/86Sr to disentangle structurally forced confluence of regional groundwater resources: The case of the Lower Yarmouk Gorge
Autor Siebert, C. ORCID logo ; Möller, P.; Magri, F.; Shalev, E.; Rosenthal, E.; Al-Raggad, M.; Rödiger, T.
Quelle Geofluids
Erscheinungsjahr 2019
Department CHS; CATHYD
Band/Volume 2019
Seite von art. 6727681
Sprache englisch
Abstract The conjoint discussion of tectonic features, correlations of element concentrations, δ18O, δD, and 87Sr/86Sr of groundwater leads to new insight into sources of groundwater, their flow patterns, and salinization in the Yarmouk Basin. The sources of groundwater are precipitation infiltrating into basaltic rock or limestone aquifers. Leaching of relic brines and dissolution of gypsum and calcite from the limestone host rocks generate enhanced salinity in groundwater in different degrees. High U(VI) suggests leaching of U from phosphorite-rich Upper Cretaceous B2 formation. Both very low U(VI) and specific rare earth element including yttrium (REY) distribution patterns indicate interaction with ferric oxyhydroxides formed during weathering of widespread alkali olivine basalts in the catchment area. REY patterns of groundwater generated in basaltic aquifers are modified by interaction with underlying limestones. Repeated sampling over 18 years revealed that the flow paths towards certain wells of groundwater varied as documented by changes in concentrations of dissolved species and REY patterns and U(VI) contents. In the Yarmouk Gorge, groundwater with basaltic REY patterns but high U(VI) and low Sr2+ and intermediate sulfate concentrations mainly ascends in artesian wells tapping a buried flower structure fault system crossing the trend of the gorge.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22594
Siebert, C., Möller, P., Magri, F., Shalev, E., Rosenthal, E., Al-Raggad, M., Rödiger, T. (2019):
Applying rare earth elements, uranium, and 87Sr/86Sr to disentangle structurally forced confluence of regional groundwater resources: The case of the Lower Yarmouk Gorge
Geofluids 2019 , art. 6727681 10.1155/2019/6727681