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Timing of Metamorphism of the Metavoclanics Within the Gyemyeongsan Formation
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 Title & Authors
Timing of Metamorphism of the Metavoclanics Within the Gyemyeongsan Formation
Kim, Myoung-Jung; Park, Kye-Hun; Yi, Keewook; Koh, Sang Mo;
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 Abstract
We identified well developed overgrowth rims from several zircon grains separated from the Gyemyeongsan metavolcanics of the Okcheon Metamorphic Belt. Such overgrowth rims reveal generally quite low Th/U ratios indicating formation during the metamorphism. We were able to conduct SHRIMP U-Pb spot analyses from the relatively wide overgrowth rims and determined a concordia age of (n=8, ), which indicates timing of the regional metamorphism occurred in the Gyemyeongsan Formation.
 Keywords
Okcheon metamorphic belt;Gyemyeongsan Formation;metamorphic age;zircon;SHRIMP U-Pb;
 Language
Korean
 Cited by
1.
Jurassic (~170Ma) Zircon U-Pb Age of a "Granite Boulder" in the Geumgang Limestone, Ogcheon Metamorphic Belt, Korea: Reinterpretation of its Origin, The Journal of the Petrological Society of Korea, 2016, 25, 1, 29  crossref(new windwow)
2.
Recurrent rare earth element mineralization in the northwestern Okcheon Metamorphic Belt, Korea: SHRIMP U–Th–Pb geochronology, Nd isotope geochemistry, and tectonic implications, Ore Geology Reviews, 2015, 71, 99  crossref(new windwow)