Hauling field gear up Gothic Mountain…
Research Article| July 01, 1980 Cambrian-Ordovician syenites of New Mexico, part of a regional alkalic intrusive episode Anne Kramer Loring; Anne Kramer Loring 1Conoco Inc., Tucson, Arizona 85705 Search for other works by this author on: GSW Google Scholar Dale G. Armstrong Dale G. Armstrong 2Conoco Inc., Albuquerque, New Mexico 87112 Search for other works by this author on: GSW Google Scholar Author and Article Information Anne Kramer Loring 1Conoco Inc., Tucson, Arizona 85705 Dale G. Armstrong 2Conoco Inc., Albuquerque, New Mexico 87112 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1980) 8 (7): 344–348. https://doi.org/10.1130/0091-7613(1980)8<344:CSONMP>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 Anne Kramer Loring, Dale G. Armstrong; Cambrian-Ordovician syenites of New Mexico, part of a regional alkalic intrusive episode. Geology 1980;; 8 (7): 344–348. doi: https://doi.org/10.1130/0091-7613(1980)8<344:CSONMP>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 Two occurrences of a distinctive red syenite in central New Mexico east-southeast of Albuquerque have yielded a whole-rock Rb-Sr isochron age of about 469 ± 7 m.y. Maximum possible ages of 496 and 604 m.y. are calculated for the two different occurrences. These Ordovician and possibly Cambrian syenites intrude foliated and regionally metamorphosed Precambrian rocks but are themselves unfoliated and unmetamorphosed.The New Mexico syenites are lithologically similar to Ordovocian red syenite dikes of the Wet Mountains and Powderhorn area of southern Colorado, which cut but are related to Cambrian alkalic intrusive complexes. It appears that alkalic igneous activity affected southern Colorado, central New Mexico, and perhaps south-central New Mexico in early Paleozoic time. 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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