Three-dimensional geometry of metamorphic fluid flow during Barrovian regional metamorphism from an inversion of combined petrologic and stable isotopic data

Abstract

Research Article| July 01, 2002 Three-dimensional geometry of metamorphic fluid flow during Barrovian regional metamorphism from an inversion of combined petrologic and stable isotopic data Boswell A. Wing; Boswell A. Wing 1Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA Search for other works by this author on: GSW Google Scholar John M. Ferry John M. Ferry 1Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA Search for other works by this author on: GSW Google Scholar Geology (2002) 30 (7): 639–642. https://doi.org/10.1130/0091-7613(2002)030<0639:TDGOMF>2.0.CO;2 Article history received: 15 Nov 2001 rev-recd: 25 Mar 2002 accepted: 28 Mar 2002 first online: 02 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 Boswell A. Wing, John M. Ferry; Three-dimensional geometry of metamorphic fluid flow during Barrovian regional metamorphism from an inversion of combined petrologic and stable isotopic data. Geology 2002;; 30 (7): 639–642. doi: https://doi.org/10.1130/0091-7613(2002)030<0639:TDGOMF>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 Inverse calculations reveal the three-dimensional geometry of time-integrated fluid flux over a 120 km2 area during peak Barrovian regional metamorphism in southeastern Vermont. Prograde changes in whole-rock CO2, 18O, and 13C and calculated fluid compositions at the peak of metamorphism were inverted assuming tracer mass balance to obtain the time-integrated fluid flux in three dimensions. Peak metamorphic fluid flow was spatially nonuniform with flux magnitudes ranging from ∼0 to 3·105 mol fluid/cm2 rock and flux directions ranging from vertical (upward and downward) to horizontal. Averaged over the entire study area, the magnitude of the time-integrated metamorphic fluid flux vector is ∼3.4·104 mol fluid/cm2 rock. The average flux vector trends 45° to the southwest and points upward at 36° from the present horizontal, parallel to formation boundaries on a regional scale. Fluids in the terrain carried ∼3·103 mol CO2/cm2 rock toward Earth's surface during the peak of metamorphism. Results suggest that local cross-layer transport processes are secondary to terrain-scale metamorphic fluid flow in driving prograde decarbonation reactions. Regional structure exerts a first-order control on the gross geometry of peak metamorphic fluid flow. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.