Regional metamorphic controls on alteration associated with gold mineralization in the Eastern Goldfields province, Western Australia: Implications for the timing and origin of Archean lode-gold deposits

Abstract

Research Article| October 01, 1991 Regional metamorphic controls on alteration associated with gold mineralization in the Eastern Goldfields province, Western Australia: Implications for the timing and origin of Archean lode-gold deposits W. K. Witt W. K. Witt 1Geological Survey of Western Australia, 100 Plain Street, Perth, Western Australia 6000, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information W. K. Witt 1Geological Survey of Western Australia, 100 Plain Street, Perth, Western Australia 6000, Australia Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1991) 19 (10): 982–985. https://doi.org/10.1130/0091-7613(1991)019<0982:RMCOAA>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 W. K. Witt; Regional metamorphic controls on alteration associated with gold mineralization in the Eastern Goldfields province, Western Australia: Implications for the timing and origin of Archean lode-gold deposits. Geology 1991;; 19 (10): 982–985. doi: https://doi.org/10.1130/0091-7613(1991)019<0982:RMCOAA>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 Alteration assemblages associated with Archean epigenetic gold mineralization in the Menzies-Kambalda area of the Yilgarn craton, Western Australia, vary systematically with regional metamorphic grade, up to and including upper amphibolite facies rocks. K-metasomatism is recorded by the presence of muscovite, biotite, and K-feldspar at progressively higher metamorphic grades. High metamorphic grades are commonly developed in broad thermal aureoles around fate syntectonic granitic intrusions. Metamorphic recrystallization of alteration assemblages is common in the thermal aureoles. These relations suggest broad contemporaneity among granitoid intrusion, regional metamorphism, and mineralization during the final stages of the tectonic evolution of the granite-greenstone terrain. Late syntectonic granitoids acted as centers of heat and fluid flux in large-scale, synmetamorphic hydrothermal systems that deposited gold, possibly from modified mantle-derived fluids. 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.