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- W2098073911 abstract "Research Article| May 01, 2001 Zircon U-Pb geochronology in the Bergen arc eclogites and their Proterozoic protoliths, and implications for the pre-Scandian evolution of the Caledonides in western Norway Bernard Bingen; Bernard Bingen 1Geological Survey of Norway, Leiv Eirikssons vei 39, 7491 Trondheim, Norway Search for other works by this author on: GSW Google Scholar William J. Davis; William J. Davis 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar Håkon Austrheim Håkon Austrheim 3Mineralogisk Geologisk Museum, University of Oslo, Sars'gate 1, 0562 Oslo, Norway Search for other works by this author on: GSW Google Scholar GSA Bulletin (2001) 113 (5): 640–649. https://doi.org/10.1130/0016-7606(2001)113<0640:ZUPGIT>2.0.CO;2 Article history received: 28 Jun 1999 rev-recd: 25 Feb 2000 accepted: 04 Sep 2000 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 Bernard Bingen, William J. Davis, Håkon Austrheim; Zircon U-Pb geochronology in the Bergen arc eclogites and their Proterozoic protoliths, and implications for the pre-Scandian evolution of the Caledonides in western Norway. GSA Bulletin 2001;; 113 (5): 640–649. doi: https://doi.org/10.1130/0016-7606(2001)113<0640:ZUPGIT>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 The Proterozoic crystalline Lindås nappe of the Bergen arc, Caledonides of western Norway, displays local Caledonian eclogite facies overprint along fractures and shear zones. The overprint results from fluid infiltration in a dry granulite facies protolith under eclogite facies conditions. Formation of a low Th/U zircon overgrowth in eclogites is interpreted to be coeval with crystallization of the eclogite facies assemblage. A lower intercept age of 456 ± 7 Ma obtained from combined zircon U-Pb data for an eclogite and an associated granulite are believed to reflect the eclogite facies fluid infiltration event. An alternative minimum age of 419 ± 4 Ma can be extracted from the data. A charnockite and a mafic granulite yield Proterozoic intrusion ages of 1237 +43/–35 and 951 ± 2 Ma, and a garnet- bearing granulite provides an age of 929 ± 1 Ma for the late Sveconorwegian granulite facies metamorphism. The Proterozoic ages are compatible with a correlation between the Lindås and Jotun nappes and an origin of the Lindås nappe in the Sveconorwegian province of Baltica. We propose a possible model featuring subduction of the Lindås nappe at 456 ± 7 Ma attached to the Baltica plate during a Late Ordovician (Caradoc) collision between Baltica and an outboard island arc in the Iapetus Ocean. Accretion of some of the ophiolite-bearing terranes preserved in the Caledonides of western Norway may have taken place during this event. 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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- W2098073911 title "Zircon U-Pb geochronology in the Bergen arc eclogites and their Proterozoic protoliths, and implications for the pre-Scandian evolution of the Caledonides in western Norway" @default.
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