Evolution of fluid compartmentalization in a detachment fold complex

Abstract

Research Article| January 01, 2005 Evolution of fluid compartmentalization in a detachment fold complex Liliana Lefticariu; Liliana Lefticariu 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Search for other works by this author on: GSW Google Scholar Eugene C. Perry; Eugene C. Perry 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Search for other works by this author on: GSW Google Scholar Mark P. Fischer; Mark P. Fischer 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Search for other works by this author on: GSW Google Scholar Jay L. Banner Jay L. Banner 2Department of Geological Sciences, University of Texas, Austin, Texas 78712, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Liliana Lefticariu 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Eugene C. Perry 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Mark P. Fischer 1Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, Illinois 60115, USA Jay L. Banner 2Department of Geological Sciences, University of Texas, Austin, Texas 78712, USA Publisher: Geological Society of America Received: 24 Feb 2004 Revision Received: 15 Sep 2004 Accepted: 17 Sep 2004 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (1): 69–72. https://doi.org/10.1130/G20592.1 Article history Received: 24 Feb 2004 Revision Received: 15 Sep 2004 Accepted: 17 Sep 2004 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Liliana Lefticariu, Eugene C. Perry, Mark P. Fischer, Jay L. Banner; Evolution of fluid compartmentalization in a detachment fold complex. Geology 2005;; 33 (1): 69–72. doi: https://doi.org/10.1130/G20592.1 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 Oxygen, carbon, and strontium isotope variations in vein-filling calcite and quartz cements and their host rocks are used to elucidate the origin, spatial and temporal evolution, and migration pathways of fluids in the detachment Nuncios fold complex, northeastern Mexico. The folded Mesozoic sedimentary sequence contains two regional paleohydrostratigraphic units separated by a unit of low permeability. Two main generations of cements are present in both paleohydrostratigraphic units. Distinct differences exist between δ18O, δ13C, 87Sr/86Sr, and fluid-inclusion temperatures of early vein-filling cements in the lower and the upper units. These differences, together with a strong correspondence between early cement and host-rock δ18O and δ13C values, suggest that early diagenetic fluids were compartmentalized between the two units. Late vein-filling cements have isotopic compositions and fluid-inclusion temperatures that converge to similar values, indicating a change to open fluid flow between the lower and upper units. We hypothesize that the fluid history of the Nuncios fold complex evolved in two main stages: (1) burial diagenesis and early folding, during which fluids were confined within individual units, and (2) late-stage folding, during which increased deformation associated with fold tightening caused the expulsion of fluid from the lower unit into the upper unit. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.