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- W2014720105 abstract "Research Article| June 01, 1989 Epidote-amphibolite to amphibolite facies transition in the southern Appalachian Piedmont: P-T conditions across the garnet and cale-silicate isograds Christopher I. Chalokwu Christopher I. Chalokwu 1Department of Geology, Auburn University, Auburn, Alabama 36849 Search for other works by this author on: GSW Google Scholar Author and Article Information Christopher I. Chalokwu 1Department of Geology, Auburn University, Auburn, Alabama 36849 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (6): 491–494. https://doi.org/10.1130/0091-7613(1989)017<0491:EATAFT>2.3.CO;2 Article history First Online: 02 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 Christopher I. Chalokwu; Epidote-amphibolite to amphibolite facies transition in the southern Appalachian Piedmont: P-T conditions across the garnet and cale-silicate isograds. Geology 1989;; 17 (6): 491–494. doi: https://doi.org/10.1130/0091-7613(1989)017<0491:EATAFT>2.3.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 Amphibolites occur in three distinct localities (Hudson Rapids, Davis Mill, and Lindsey Creek) in the west-central Georgia part of the Uchee belt, southern Appalachian Piedmont. Epidote-amphibolite facies assemblage (plagioclase [An24-36] + hornblende + epidote + sphene + quartz) at the Davis Mill occurrence gives way to the amphibolite assemblage (calcic plagio-clase [An33-88] + hornblende + garnet + epidote + ilmenite + quartz) at Hudson Rapids. Mineral chemistries indicate that the transition was controlled by increasing pressure and unusual bulk compositions.Equilibrium mineral assemblages record temperatures ranging from 610 to 780 °C at the garnet isograd, and from 570 to 634 °C close to the calc-silicate isograd. Estimated pressures range from 7 to 9.25 ±2 kbar. These P-T conditions are consistent with a thickened crustal section caused by emplacement of the Piedmont allochthon, followed by isobaric cooling (or isothermal compression), and the formation of symplectites of epidote + amphibole around plagioclase + clinopyroxene. 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." @default.
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- W2014720105 title "Epidote-amphibolite to amphibolite facies transition in the southern Appalachian Piedmont: P-T conditions across the garnet and cale-silicate isograds" @default.
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