Granite ascent in convergent orogenic belts: Testing a model

Research Article| August 01, 1998 Granite ascent in convergent orogenic belts: Testing a model Gary S. Solar; Gary S. Solar 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Search for other works by this author on: GSW Google Scholar Rachel A. Pressley; Rachel A. Pressley 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Search for other works by this author on: GSW Google Scholar Michael Brown; Michael Brown 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Search for other works by this author on: GSW Google Scholar Robert D. Tucker Robert D. Tucker 2Department of Earth & Planetary Sciences, Washington University, St. Louis, Missouri 63130-4899 Search for other works by this author on: GSW Google Scholar Author and Article Information Gary S. Solar 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Rachel A. Pressley 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Michael Brown 1Department of Geology, University of Maryland, College Park, Maryland 20742-4211 Robert D. Tucker 2Department of Earth & Planetary Sciences, Washington University, St. Louis, Missouri 63130-4899 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 (8): 711–714. https://doi.org/10.1130/0091-7613(1998)026<0711:GAICOB>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 Gary S. Solar, Rachel A. Pressley, Michael Brown, Robert D. Tucker; Granite ascent in convergent orogenic belts: Testing a model. Geology 1998;; 26 (8): 711–714. doi: https://doi.org/10.1130/0091-7613(1998)026<0711:GAICOB>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 The common spatial relationship in convergent orogenic belts between a crustal-scale shear-zone system, high-grade metamorphic rocks, and granites suggests a feedback relation between crustal anatexis and contractional deformation that helps granite extraction and focuses granite ascent. Such a feedback relation has been proposed for ascent of Early Devonian granites in west-central Maine. This interpretation requires that deformation, metamorphism, and plutonism were synchronous. We have determined precise U-Pb zircon and monazite ages that we interpret to record time of crystallization of syntectonic granite in metric to decametric sheets and kilometric plutons, and of schlieric granite within migmatites. Ages are in the range ca. 408–404 Ma, within 1 m.y. at 95% confidence limits. These ages are similar to extant U-Pb monazite ages of ca. 405–399 ± 2 Ma for syntectonic regional metamorphism in the same area. The coincidence between the age of peak metamorphism and crystallization ages of granite shows tectonics, metamorphism, and magmatism were contemporaneous, in support of the feedback model. 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.