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Research Article| September 01, 1965 NON-ANATECTIC MIGMATITES IN GILPIN COUNTY, COLORADO PAUL D LOWMAN, JR. PAUL D LOWMAN, JR. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, GODDARD SPACE FLIGHT CENTER, GREENBELT, MD. Search for other works by this author on: GSW Google Scholar GSA Bulletin (1965) 76 (9): 1061–1064. https://doi.org/10.1130/0016-7606(1965)76[1061:NMIGCC]2.0.CO;2 Article history received: 05 May 1965 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation PAUL D LOWMAN; NON-ANATECTIC MIGMATITES IN GILPIN COUNTY, COLORADO. GSA Bulletin 1965;; 76 (9): 1061–1064. doi: https://doi.org/10.1130/0016-7606(1965)76[1061:NMIGCC]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 To test the anatectic theory of migmatite formation, modal analyses and field studies were made of migmatites in Gilpin County, Colorado, and adjoining areas. The metasomes of a significant number of these migmatites were found not to fit the presently accepted definition of granite as a rock containing roughly equal proportions of quartz, orthoclase, and plagioclase. Field relationships show that many of the migmatites were derived from granite pegmatite dikes. Therefore, if anatexis is a factor in the genesis of the migmatites in this area this process must be relegated to a more remote stage of magma generation. 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.
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