Volcanic rock-hosted gold and base-metal mineralization, associated with Neoproterozoic-Early Paleozoic, back-arc extension in the Carolina terrane, southern Appalachian Piedmont

Research Article| May 01, 1993 Volcanic rock-hosted gold and base-metal mineralization, associated with Neoproterozoic-Early Paleozoic, back-arc extension in the Carolina terrane, southern Appalachian Piedmont P. Geoffrey Feiss; P. Geoffrey Feiss 1Department of Geology, University of North Carolina, Chapel Hill, North Carolina 27599-3315 Search for other works by this author on: GSW Google Scholar R. Kelly Vance; R. Kelly Vance 2Department of Geology and Geography, Georgia Southern University, Statesboro, Georgia 30460 Search for other works by this author on: GSW Google Scholar David J. Wesolowski David J. Wesolowski 3Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6110 Search for other works by this author on: GSW Google Scholar Author and Article Information P. Geoffrey Feiss 1Department of Geology, University of North Carolina, Chapel Hill, North Carolina 27599-3315 R. Kelly Vance 2Department of Geology and Geography, Georgia Southern University, Statesboro, Georgia 30460 David J. Wesolowski 3Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6110 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1993) 21 (5): 439–442. https://doi.org/10.1130/0091-7613(1993)021<0439:VRHGAB>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 P. Geoffrey Feiss, R. Kelly Vance, David J. Wesolowski; Volcanic rock-hosted gold and base-metal mineralization, associated with Neoproterozoic-Early Paleozoic, back-arc extension in the Carolina terrane, southern Appalachian Piedmont. Geology 1993;; 21 (5): 439–442. doi: https://doi.org/10.1130/0091-7613(1993)021<0439:VRHGAB>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 Volcanogenic mineral deposits in the Carolina terrane, southern Appalachian Piedmont,include Kuroko-type polymetallic massive sulfide deposits and disseminated gold-pyrite deposits associated with propylitic, silicic, argillic, and advanced argillic alteration. Host rocks are metavolcaniclastic and metaepiclastic rocks of a Neoproterozoic-Early Cambrian magmatic arc. The favorable gold horizon is the transition from a lower succession of andesitic and rhyolitic pyroclastic rocks with basal mafic lavas to an upper sequence of epiclastic sedimentary units and minor lava and ash flows. Kuroko-type deposits are associated with mafic to bimodal volcanic rocks in the upper sequence. Whole-rock oxygen isotope analyses indicate that gold mineralization is associated with a transition from hydrothermal systems dominated by isotopically relatively light (δ18O = -6‰ to -10‰) waters, typical of high-latitude subaerial systems, to seawater (δ18O = 0‰). Plots of δ18O vs. SiO2 of the host rocks show a compositional gap associated with mineralization at the subaerial to submarine transition. Values of δ18O for the hydrothermal waters, lithostratigraphic analyses, and tectonic models of the Carolina terrane demonstrate that mineralization coincided with extension in a rifted arc. 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.