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North American Feldspathoidal Rocks in Space and Time

1969; Geological Society of America; Volume: 80; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1969)80[2369

1943-2674

Daniel S. Barker,

Geological formations and processes

Research Article| November 01, 1969 North American Feldspathoidal Rocks in Space and Time DANIEL S BARKER DANIEL S BARKER Department of Geological Sciences, The University of Texas at Austin, Austin, Texas 78712 Search for other works by this author on: GSW Google Scholar Author and Article Information DANIEL S BARKER Department of Geological Sciences, The University of Texas at Austin, Austin, Texas 78712 Publisher: Geological Society of America Received: 16 Apr 1969 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1969, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1969) 80 (11): 2369–2372. https://doi.org/10.1130/0016-7606(1969)80[2369:NAFRIS]2.0.CO;2 Article history Received: 16 Apr 1969 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation DANIEL S BARKER; North American Feldspathoidal Rocks in Space and Time. GSA Bulletin 1969;; 80 (11): 2369–2372. doi: https://doi.org/10.1130/0016-7606(1969)80[2369:NAFRIS]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 SocietyGSA Bulletin Search Advanced Search Abstract Feldspathoidal rocks are generally considered to be postorogenic and concentrated in the stable portions of continents. These erroneous ideas have biased petrogenetic hypotheses. Of the more than 120 feldspathoidal rock occurrences in North America, only one-third are in the shield and stable craton; the remainder are within Phanerozoic orogenic belts. Approximately 20 percent of all occurrences are pretectonic or syntectonic.In several regions (usually considered petrographic provinces) superficially identical feldspathoidal rocks were emplaced over spans of several hundred million years. Time correlation based upon petrologic similarity and geographic proximity is as risky for these igneous rocks as it is for sedimentary rocks.Hypotheses stating that feldspathoidal rocks are generated during “crustal tension” and rift faulting seem inapplicable to North America. 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.