Young Granite Gneiss” in the Central Yeongnam Massif
Geosciences Journal Vol. 19, No. 1, p. 1 16, March 2015 DOI 10.1007/s12303-014-0025-7 ⓒ The Association of Korean Geoscience Societies and Springer 2015 Recognition of the Phanerozoic “Young Granite Gneiss” in the central Yeongnam Massif Yong-Sun Song Ho-Sun Lee† Department of Earth Environmental Sciences, Pukyong National University, Busan 608-737, Republic Kye-Hun Park* } of Korea Ian C.W. Fitzsimons Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth 6845, WA, Peter A. Cawood†† } Australia ABSTRACT: Up to now, all the high-grade gneisses of the Korean North and South China blocks is surely one of the events peninsula have been regarded as Precambrian basement rocks that have been attracted a lot of attention. Especially, the and presence of the Phanerozoic high-grade metamorphic rocks discovery of ultrahigh-pressure metamorphic rocks from the have remained unknown. However, such granite gneiss is discov- ered through this study from the central Yeongnam massif near Sulu Belt, Eastern China (Zhang et al., 1990; Enami and Gimcheon. SHRIMP zircon U-Pb age determinations on the gran- Zang, 1990), brought debates about possibility of extension ite gneiss, having well-developed gneissic foliations and migmatitic of the continental collision belt between North and South textures, reveal concordant age of ca. 250 Ma indicating the Early China blocks toward Korean peninsula (e.g., Yin and Nie, Triassic emplacement of this pluton, which is in contradict to the 1993; Liu, 1993; Ree et al., 1996; Oh, 2006; Oh et al., 2006b, previous belief that it is a Precambrian product.
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