A three-sided orogen: A new tectonic model for Ancestral Rocky Mountain uplift and basin development

Abstract

Research Article| June 09, 2017 A three-sided orogen: A new tectonic model for Ancestral Rocky Mountain uplift and basin development Ryan J. Leary; Ryan J. Leary 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar Paul Umhoefer; Paul Umhoefer 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar M. Elliot Smith; M. Elliot Smith 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar Nancy Riggs Nancy Riggs 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Ryan J. Leary 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Paul Umhoefer 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA M. Elliot Smith 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Nancy Riggs 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA Publisher: Geological Society of America Received: 09 Feb 2017 Revision Received: 20 Apr 2017 Accepted: 22 Apr 2017 First Online: 23 Jun 2017 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2017 Geological Society of America Geology (2017) 45 (8): 735–738. https://doi.org/10.1130/G39041.1 Article history Received: 09 Feb 2017 Revision Received: 20 Apr 2017 Accepted: 22 Apr 2017 First Online: 23 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 Ryan J. Leary, Paul Umhoefer, M. Elliot Smith, Nancy Riggs; A three-sided orogen: A new tectonic model for Ancestral Rocky Mountain uplift and basin development. Geology 2017;; 45 (8): 735–738. doi: https://doi.org/10.1130/G39041.1 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 The tectonic origin of the Pennsylvanian–Permian Ancestral Rocky Mountain system is debated. Most models invoke stress from collision along the Ouachita-Marathon belt as the primary driver for Ancestral Rocky Mountain (ARM) (western USA) tectonism, but no existing model has convincingly explained the timing, northeast-southwest contractional kinematics, and amagmatic nature of this system. We propose that stress generated by transpressional deformation along the southwestern (Sonora) margin of Laurentia combined with that from collision along the Ouachita-Marathon and Nevada margins drove uplift and basin development of the ARM. This model explains ARM timing, uplift kinematics, and lack of magmatism, and is supported by a new generation of late Paleozoic global plate reconstructions. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.