Research Article| December 01, 1984 Adiabatic decompression of aqueous solutions: Applications to hydrothermal fluid migration in the crust Scott A. Wood; Scott A. Wood 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Search for other works by this author on: GSW Google Scholar Frank J. Spera Frank J. Spera 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Search for other works by this author on: GSW Google Scholar Author and Article Information Scott A. Wood 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Frank J. Spera 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1984) 12 (12): 707–710. https://doi.org/10.1130/0091-7613(1984)12<707:ADOASA>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Scott A. Wood, Frank J. Spera; Adiabatic decompression of aqueous solutions: Applications to hydrothermal fluid migration in the crust. Geology 1984;; 12 (12): 707–710. doi: https://doi.org/10.1130/0091-7613(1984)12<707:ADOASA>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Adiabatic decompression may result in the heating of geologic aqueous fluids on the order of tens of degrees Celsius. Adiabatic expansion may be either reversible, in which case geologically important fluids cool on decompression, or irreversible. If the irreversible adiabatic expansion involves a significant pressure loss due to internal work generation (and kinetic and gravitational effects can be ignored) and the Joule-Thompson coefficient is large and negative, fluids heat up upon decompression. The Joule-Thompson coefficient becomes increasingly negative (i.e., the heating effect dominates) at high pressures, low temperatures, high mNaCl, and high XCO2. We predict that high concentrations of divalent and trivalent ions in solution will also increase the magnitude of the heating effect. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.