Igneous cumulates of the Wichita province and their tectonic implications

Abstract

Research Article| January 01, 1977 Igneous cumulates of the Wichita province and their tectonic implications Benjamin N. Powell; Benjamin N. Powell 1Department of Geology, Rice University, Houston, Texas 77001 Search for other works by this author on: GSW Google Scholar David W. Phelps David W. Phelps 1Department of Geology, Rice University, Houston, Texas 77001 Search for other works by this author on: GSW Google Scholar Author and Article Information Benjamin N. Powell 1Department of Geology, Rice University, Houston, Texas 77001 David W. Phelps 1Department of Geology, Rice University, Houston, Texas 77001 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1977) 5 (1): 52–56. https://doi.org/10.1130/0091-7613(1977)5<52:ICOTWP>2.0.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 Benjamin N. Powell, David W. Phelps; Igneous cumulates of the Wichita province and their tectonic implications. Geology 1977;; 5 (1): 52–56. doi: https://doi.org/10.1130/0091-7613(1977)5<52:ICOTWP>2.0.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 Studies of the anorthositic-gabbroic rocks of the Layered Series of the Wichita province, Oklahoma, establish petrologic constraints that suggest the body is an eroded stratiform gabbro complex, originally several kilometres thick, exposed at its approximate midsection. These rocks appear to be genetically unrelated to most of the other igneous rocks of the province. Uplift and erosional removal of several kilometres of upper Layered Series and overburden occurred prior to extrusion of the 500-m.y.-old Carlton Rhyolite and associated Wichita Granite. Time considerations imply a Precambrian age for the Layered Series, the emplacement of which reflects, according to this working hypothesis, a more ancient zone of rifting or crustal weakness, a rejuvenation of which in the Paleozoic evolved as the Southern Oklahoma aulacogen. This association of tholeiitic magmatism with an intracratonic rift system is analogous to the Midcontinent Rift (Duluth gabbro complex) and represents a petrogenesis different from that of the alkaline magmatism commonly found in this tectonic setting. 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.