Granite emplacement during tectonic exhumation: The Adirondack example

Abstract

Research Article| October 01, 2005 Granite emplacement during tectonic exhumation: The Adirondack example Bruce W. Selleck; Bruce W. Selleck 1Geology Department, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA Search for other works by this author on: GSW Google Scholar James M. McLelland; James M. McLelland 2Geosciences, Skidmore College, 815 North Broadway, Saratoga Springs, New York 12866, USA Search for other works by this author on: GSW Google Scholar M. E. Bickford M. E. Bickford 3Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse University, Syracuse, New York 13244-1070, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Bruce W. Selleck 1Geology Department, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA James M. McLelland 2Geosciences, Skidmore College, 815 North Broadway, Saratoga Springs, New York 12866, USA M. E. Bickford 3Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse University, Syracuse, New York 13244-1070, USA Publisher: Geological Society of America Received: 25 Feb 2005 Revision Received: 25 May 2005 Accepted: 08 Jun 2005 First Online: 03 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (10): 781–784. https://doi.org/10.1130/G21631.1 Article history Received: 25 Feb 2005 Revision Received: 25 May 2005 Accepted: 08 Jun 2005 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Bruce W. Selleck, James M. McLelland, M. E. Bickford; Granite emplacement during tectonic exhumation: The Adirondack example. Geology 2005;; 33 (10): 781–784. doi: https://doi.org/10.1130/G21631.1 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 Sensitive high-resolution ion microprobe U-Pb zircon ages for late to posttectonic leucogranites fix the timing of extensional collapse of a portion of the Mesoproterozoic Grenville orogen of eastern North America. Plutons of Lyon Mountain Granite (LMG) were emplaced within the Carthage Colton shear zone synchronously with formation of extensional mylonite at 1045–1037 Ma. Leucogranite melts were generated in the hot granulite facies core of the Adirondack Highlands–Central Granulite terrane that served as the lower plate for down-to-the-northwest extension. The LMG suite is associated with high-temperature hydrothermal magnetite deposits in the Adirondack Highlands, and widespread Cl + CO2 hydrothermal alteration of upper-plate rocks is localized along the Carthage Colton shear zone where LMG granites are present. The relationships between melt generation, granite intrusion, high strain rates, extensional collapse, and high- temperature hydrothermal activity provide a framework for understanding midcrustal processes in modern and ancient orogenic belts. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.