Modeling low-temperature geochemical processes: Chapter 2

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Abstract

This chapter provides an overview of geochemical modeling that applies to water–rock interactions under ambient conditions of temperature and pressure. Topics include modeling definitions, historical background, issues of activity coefficients, popular codes and databases, examples of modeling common types of water–rock interactions, and issues of model reliability. Examples include speciation, microbial redox kinetics and ferrous iron oxidation, calcite dissolution, pyrite oxidation, combined pyrite and calcite dissolution, dedolomitization, seawater–carbonate groundwater mixing, reactive-transport modeling in streams, modeling catchments, and evaporation of seawater. The chapter emphasizes limitations to geochemical modeling: that a proper understanding and ability to communicate model results well are as important as completing a set of useful modeling computations and that greater sophistication in model and code development is not necessarily an advancement. If the goal is to understand how a particular geochemical system behaves, it is better to collect more field data than rely on computer codes.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Modeling low-temperature geochemical processes: Chapter 2
DOI 10.1016/B978-0-08-095975-7.00502-7
Edition 2
Volume 7
Year Published 2014
Language English
Publisher Elsevier
Publisher location Amsterdam
Contributing office(s) National Research Program - Central Branch, Toxic Substances Hydrology Program
Description 42 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Reference Module in Earth Systems and Environmental Sciences: Treatise on Geochemistry
First page 27
Last page 68