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  • 1
    Online Resource
    Online Resource
    Cham : Springer International Publishing | Cham : Imprint: Springer
    Keywords: Environmental sciences. ; Renewable energy resources. ; Energy systems. ; Lehrbuch ; Geothermik ; Geothermische Energie ; Geothermisches Kraftwerk ; Erdwärmesonde ; Hydrothermalquelle ; Thermalwasser ; Hot-dry-rock-Verfahren ; Tiefengeothermie ; Tiefe geothermische Energie ; Tiefenwasser
    Description / Table of Contents: Chapter 1: Thermal Structure of The Earth -- Chapter 2: History of Geothermal Energy Use -- Chapter 3: Geothermal Energy Resources -- Chapter 4: Uses of Geothermal Energy -- Chapter 5: Geothermal Potential Perspectives Final -- Chapter 6: Geothermal Probes Final -- Chapter 7: Groundwater Wells -- Chapter 8: Hydrothermal Systems -- Chapter 9: EGS -- Chapter 10: High-Enthalpy Geothermal Systems -- Chapter 11: Environmental Issues -- Chapter 12: Drilling Techniques -- Chapter 13: Geophysical Methods -- Chapter 14: Hydraulic Tests -- Chapter 15: Hydrochemistry -- Chapter 16: References
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(X, 390 p. 181 illus., 158 illus. in color.)
    Edition: 2nd ed. 2021
    ISBN: 9783030716851
    Series Statement: Springer eBook Collection
    Language: English
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  • 2
    Publication Date: 2023-06-17
    Description: The composition of meta-gabbro and meta-basalt occurring abundant and widespread in all nappes of the nappe stack exposed in the Zermatt region of the Western Alp shows distinct patterns related to the geodynamic origin of metamorphic basic rocks. Eclogitic meta-basalts of the ophiolitic Zermatt-Saas Unit (ZSU) show enriched MORB signatures. The meta-basalts (eclogites) of the continental fragment of the Theodul Glacier Unit (TGU) derive from pre-Alpine metamorphic continental intraplate basalts. Meta-basalts (eclogites) from the continental basement of the Siviez-Mischabel nappe (SMN) derive from MORB thus a genetic relation to the TGU eclogites can be excluded. All basic igneous rocks experienced post-magmatic alteration by fluid-rock interaction ranging from processes at the seafloor, in the shallow crust, during subduction zone hydration, in the exhumation channel and late Alpine regional metamorphisms. The consequences of these alteration processes can be identified at various levels in the rock composition data. It was found that the REE data are little affected by fluid-rock alteration. Some trace elements, notably Cs, Rb, and Ba are typically massively altered relative to igneous compositions in all three groups of meta-basalts. Generally, meta-basalts from the TGU and the SMN preserved the features of the original composition whilst the ZSU meta-volcanic rocks experienced massive alteration. For the ZSU meta-volcanic rocks it is evident that Zr was gained and Y lost during high-pressure fluid-rock interaction indicating a mobile behavior of the two elements during HP-metamorphism in contrast to their behavior in hydrothermal near-surface fluid-rock interaction.
    Description: Albert-Ludwigs-Universität Freiburg im Breisgau (1016)
    Keywords: ddc:552.4 ; Meta-basalt ; Meta-gabbro ; Trace elements ; REE patterns ; Ophiolite
    Language: English
    Type: doc-type:article
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  • 3
    Publication Date: 2023-08-17
    Description: Diese Arbeit untersucht die geologischen, hydrogeologischen und anthropogenen Einflüsse auf die chemische Zusammensetzung eines Flusses, am Beispiel der Möhlin. Wasserproben wurden an verschiedenen Flussabschnitten genommen und mittels Alkalinitätstest und Ionenchromatographie auf die Ionen Ca〈sup〉2+〈/sup〉, Mg〈sup〉2+〈/sup〉, Na〈sup〉+〈/sup〉, K〈sup〉+〈/sup〉, HCO〈sub〉3〈/sub〉〈sup〉−〈/sup〉, CO〈sub〉3〈/sub〉〈sup〉2−〈/sup〉, SO〈sub〉4〈/sub〉〈sup〉2−〈/sup〉, Cl〈sup〉−〈/sup〉, F〈sup〉−〈/sup〉 und NO〈sub〉3〈/sub〉〈sup〉−〈/sup〉 untersucht. Daneben wurden Leitfähigkeit, Temperatur, Abfluss und pH-Wert gemessen und die δD- und δ〈sup〉18〈/sup〉O‑Isotopenzusammensetzung durch Cavity-Ring-Down-Spektroskopie ermittelt. Die Untersuchung zeigt, dass es sich bei der Möhlin im Oberlauf um einen silikatisch geprägten Fluss handelt, während sie sich im Unterlauf an der Grenze von silikatisch bis karbonatisch bewegt. Die Geologie hat den stärksten Einfluss auf die Wasserchemie der Möhlin, wobei große Anteile am geologischen Fingerabdruck durch ihre Zuflüsse geprägt werden. Weitere Einflussfaktoren sind anthropogene Einleitungen, wasserbauliche Maßnahmen sowie der ehemalige Bergbau im Elsass und Schwarzwald. Insgesamt weist das Wasser der Möhlin in Bezug auf die untersuchten Parameter eine gute Wasserqualität auf.
    Description: Albert-Ludwigs-Universität Freiburg im Breisgau (1016)
    Keywords: ddc:551.49 ; Hydrogeologie ; Wasserchemie ; Wasserisotopie ; Schwarzwald ; Oberrheingraben ; Catchment geology ; Water chemistry ; Water isotopes ; Black Forest ; Upper Rhine valley
    Language: German
    Type: doc-type:article
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