Logo du site
  • English
  • Français
  • Se connecter
Logo du site
  • English
  • Français
  • Se connecter
  1. Accueil
  2. Université de Neuchâtel
  3. Publications
  4. Validation of Chemical and Isotopic Geothermometers from Low Temperature Deep Fluids of Northern Switzerland
 
  • Details
Options
Vignette d'image

Validation of Chemical and Isotopic Geothermometers from Low Temperature Deep Fluids of Northern Switzerland

Auteur(s)
Sonney, Romain
Vuataz, François 
Centre d'hydrogéologie et de géothermie 
Date de parution
2010
In
Proceedings World Geothermal Congress, International Geothermal Association, 2010/14/1423/1-12
Mots-clés
  • Geothermometers
  • geothermal fluids
  • reservoir temperature
  • deep boreholes
  • geology
  • Northern Switzerland
  • Geothermometers

  • geothermal fluids

  • reservoir temperature...

  • deep boreholes

  • geology

  • Northern Switzerland

Résumé
<br> During more than 30 years, chemical and isotopic geothermometers have been extensively used to calculate and estimate the temperature of geothermal reservoirs in various geological, petrographical and thermal conditions. In this evaluation, chemical analyses of deep boreholes from the Molasse Basin and the Tabular Jura in Northern Switzerland were used to estimate reservoir temperatures with geothermometers, and results were compared to measured temperatures at depth. The presence of thermal waters in subhorizontal formations with a temperature range of 12-112°C, is associated with various geological and petrographical settings (sedimentary, crystalline rocks). <br><br> Composition of geothermal fluids depends on various and sometimes competing processes, such as full or partial chemical equilibrium, mixing with shallow groundwater or trapped seawater, dissolution of evaporite, ionic exchange with clays, or residence time in the reservoir. These processes are constraining for the application of geothermometers. Moreover, some of them have a limited temperature range of application cannot be used in some petrologic environments. Thus, a range of possible reservoir temperatures is calculated depending on several assumptions and compared to measured temperature. Application of chemical and isotopic geothermometers, using several calibrations proposed in the literature, is discussed in this specific context.
Identifiants
https://libra.unine.ch/handle/123456789/9979
Type de publication
journal article
Dossier(s) à télécharger
 main article: Sonney_Romain_-_Validation_of_Chemical_and_Isotropic_Geothermometers_from_Low_Temperature_20120618.pdf (1.1 MB)
google-scholar
Présentation du portailGuide d'utilisationStratégie Open AccessDirective Open Access La recherche à l'UniNE Open Access ORCIDNouveautés

Service information scientifique & bibliothèques
Rue Emile-Argand 11
2000 Neuchâtel
contact.libra@unine.ch

Propulsé par DSpace, DSpace-CRIS & 4Science | v2022.02.00