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22 - Stable Isotopes

from PART II - REACTION PROCESSES

Published online by Cambridge University Press:  09 December 2021

Craig M. Bethke
Affiliation:
University of Illinois, Urbana-Champaign
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Summary

Stable isotopes serve as naturally occurring tracers that can provide much information about how chemical reactions proceed in nature, such as which reactants are consumed and at what temperature reactions occur. This chapter shows how multicomponent chemical reaction models can be adapted to account for the stable isotope fractionation of hydrogen, carbon, oxygen, and sulfur. In the modeling approach, solid mineral phases can be held in isotopic equilibrium with the aqueous fluid or be segregated from isotope exchange. In the latter case, the isotopic composition of minerals varies only in response to precipitation and dissolution reactions. A fully worked example calculation traces the dolomitization reaction of a limestone, computed assuming the minerals are segregated from isotope exchange.

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Publisher: Cambridge University Press
Print publication year: 2022

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  • Stable Isotopes
  • Craig M. Bethke, University of Illinois, Urbana-Champaign
  • Book: Geochemical and Biogeochemical Reaction Modeling
  • Online publication: 09 December 2021
  • Chapter DOI: https://doi.org/10.1017/9781108807005.028
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  • Stable Isotopes
  • Craig M. Bethke, University of Illinois, Urbana-Champaign
  • Book: Geochemical and Biogeochemical Reaction Modeling
  • Online publication: 09 December 2021
  • Chapter DOI: https://doi.org/10.1017/9781108807005.028
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Stable Isotopes
  • Craig M. Bethke, University of Illinois, Urbana-Champaign
  • Book: Geochemical and Biogeochemical Reaction Modeling
  • Online publication: 09 December 2021
  • Chapter DOI: https://doi.org/10.1017/9781108807005.028
Available formats
×