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URN: urn:nbn:de:swb:90-463340
Originalveröffentlichung
DOI: 10.1186/s40517-014-0013-1

Hydrochemical properties of deep carbonate aquifers in the SW German Molasse basin

Stober, I.; Bucher, K.

Abstract:
Background

The Upper Jurassic (Malm) limestone and the Middle Triassic Muschelkalk limestone 18 are the major thermal aquifers in the southwest German alpine foreland. The aquifers 19 are of interest for production of geothermal energy and for balneological purposes.

Methods

Hydrochemical data from several hundred wells within two deep limestone aquifers in the Molasse basin of SW Germany have been compiled, examined, validated, and analyzed with the aim to characterize the fluids and to investigate the origin of the fluid properties.

Results

The hydrochemical properties of the two aquifers differ in several aspects. The total amounts of dissolved solids (TDS) are much higher within the Upper Muschelkalk aquifer than within the Upper Jurassic. Water composition data reflect the origin and hydrochemical evolution of deep water. Rocks and their minerals control the chemical signature of the water. With increasing depth, the total of dissolved solids increases. In both aquifers, the water evolves to a NaCl-dominated fluid regardless of the aquifer rock.

Discussion

The salinity of the aquifers has different sources. ... mehr


Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 2195-9706
KITopen ID: 1000046334
HGF-Programm 35.98.30; LK 01
Erschienen in Geothermal Energy
Band 2
Heft 13
Seiten 1-20
Schlagworte Karstified limestone aquifer; Deep-seated fluids; Hydrochemistry; Geothermal energy
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