87Sr/86Sr ratios in shallow and deep aquifers and thermal water from the eastern boundary fault of the northern upper Rhine Graben at the Heidelberg Basin, Germany

• Verfasst von: Schmidt, Gerhard [VerfasserIn]
• Verfasst von: Al Najem, Sami [VerfasserIn]
• Verfasst von: Isenbeck-Schröter, Margot [VerfasserIn]
• Verfasst von: Freundt, Florian [VerfasserIn]
• Verfasst von: Kraml, Michael [VerfasserIn]
• Verfasst von: Eichstädter, René [VerfasserIn]
• Verfasst von: Aeschbach, Werner [VerfasserIn]
• Titel: 87Sr/86Sr ratios in shallow and deep aquifers and thermal water from the eastern boundary fault of the northern upper Rhine Graben at the Heidelberg Basin, Germany
• Titelzusatz: 15th Water-Rock Interaction International Symposium, WRI-15
• Verf.angabe: Gerhard Schmidt, Sami Al Najem, Margot Isenbeck-Schröter, Florian Freundt, Michael Kraml, René Eichstädter, Werner Aeschbach
• Umfang: 4 S.
• Fussnoten: Im Zusatz zum Titel sind die Zahlen hochgestellt ; Gesehen am 15.03.2017
• Titel Quelle: Enthalten in: Procedia earth and planetary science
• Jahr Quelle: 2017
• Band/Heft Quelle: 17(2017), S. 108-111
• DOI: doi:10.1016/j.proeps.2016.12.017
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1555354475

Abstract

87Sr/86Sr ratios have been used as a tracer of fault-controlled fluid ascent into shallow aquifers at the Western Boundary Fault (WBF) of the northern upper Rhine Graben in Germany, a major rift system of the European continent. The 87Sr/86Sr ratios and Sr contents from the Quarternary groundwater conducting sediments of the uppermost aquifer increase with decreasing distance to the WBF. The 87Sr/86Sr ratios and Sr contents of the shallow groundwater range from 0.70877 to 0.71022 and 0.41 to 2.30 mg/l, respectively. The Strontium isotope ratios are important tracers of hydrological processes such as water-rock interaction and groundwater mixing at active faults and thus a powerful geochemical tool for the detection of the ascent of deep fluids at hydraulically active segments of faults and its mixing with shallow recharged groundwater.