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Research Article| September 01, 1984 Magmatic epidote and its petrologic significance E-an Zen; E-an Zen 1U.S. Geological Survey, 959 National Center, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar Jane M. Hammarstrom Jane M. Hammarstrom 1U.S. Geological Survey, 959 National Center, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar Geology (1984) 12 (9): 515–518. https://doi.org/10.1130/0091-7613(1984)122.0.CO;2 Article history first online: 01 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 E-an Zen, Jane M. Hammarstrom; Magmatic epidote and its petrologic significance. Geology 1984;; 12 (9): 515–518. doi: https://doi.org/10.1130/0091-7613(1984)122.0.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 Epidote is a major magmatic mineral in tonalite and granodiorite in a belt coextensive with the Mesozoic accreted terranes between northern California and southeastern Alaska. Textural and chemical evidence indicates that epidote crystallized as a relatively late but magmatic mineral that formed through reaction with hornblende in the presence of a melt phase. The observed relations concur with experimental data on crystallization of epidote from synthetic granodiorite at 8 kbar total pressure. Plutonic rocks bearing magmatic epidote must have formed under moderately high pressures, corresponding to lower crustal depths, under fairly oxidizing conditions. 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.
Zen et al. (Sun,) studied this question.