Time scales of magmatic processes: New insights from dynamic models for magmatic assimilation

Research Article| December 01, 1998 Time scales of magmatic processes: New insights from dynamic models for magmatic assimilation Benjamin R. Edwards; Benjamin R. Edwards 1Geological Sciences, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada Search for other works by this author on: GSW Google Scholar James K. Russell James K. Russell 1Geological Sciences, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Benjamin R. Edwards 1Geological Sciences, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada James K. Russell 1Geological Sciences, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (12): 1103–1106. https://doi.org/10.1130/0091-7613(1998)026<1103:TSOMPN>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Benjamin R. Edwards, James K. Russell; Time scales of magmatic processes: New insights from dynamic models for magmatic assimilation. Geology 1998;; 26 (12): 1103–1106. doi: https://doi.org/10.1130/0091-7613(1998)026<1103:TSOMPN>2.3.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 We present a computational model that predicts the consequences of time-dependent, isenthalpic assimilation-fractional crystallization (AFC). Our model combines an existing paradigm for fractional crystallization based on equilibrium thermodynamics with a kinetic model for predicting rates of mineral dissolution. The isenthalpic constraint directly links the sensible heat of the magma and the latent heat of crystallization to the energy necessary for assimilation. Thus, we predict liquid lines of descent, rates of crystallization, rates of cooling, and ratios of assimilation to crystallization (r) as a function of time. Model simulations predict the time scale of AFC processes (weeks to years) and show the extent to which temperature and composition of the assimilant control these time scales. 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.