2008
DOI: 10.1007/s12303-008-0001-1
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The oldest (ca. 2.51 Ga) rock in South Korea: U-Pb zircon age of a tonalitic migmatite, Daeijak Island, western Gyeonggi massif

Abstract: We discovered the oldest rock in South Korea, and dated this migmatite using a Sensitive High-Resolution Ion Microprobe (SHRIMP). Zircon grains from a tonalitic migmatite, Daeijak Island, western Gyeonggi massif, are distinctly zoned and commonly characterized by oscillatory-zoned cores and structureless rims. The U-Pb zircon ages estimated from six spot analyses of the rims in five grains define a concordant age group with the weighted mean Pb/ Pb age of 2508 ± 18 Ma, interpreted as the age of migmatization. … Show more

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Cited by 63 publications
(11 citation statements)
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“…The oldest metamorphic age is reported from a tonalitic migmatite in Daeijak Island, western Gyeonggi massif, but the majority of basement rocks are metamorphosed at ca. 1.87 Ga (Cho et al, 2008). To the south of this island, Na et al (1982) mapped the metamorphic rocks in the Seosan-Taean area, Taean Pen- Cho, 2007).…”
Section: Geologic Outline and Sample Descrip-tionmentioning
confidence: 99%
“…The oldest metamorphic age is reported from a tonalitic migmatite in Daeijak Island, western Gyeonggi massif, but the majority of basement rocks are metamorphosed at ca. 1.87 Ga (Cho et al, 2008). To the south of this island, Na et al (1982) mapped the metamorphic rocks in the Seosan-Taean area, Taean Pen- Cho, 2007).…”
Section: Geologic Outline and Sample Descrip-tionmentioning
confidence: 99%
“…Сходные результаты получены М. Чу с соавторами [Cho et al, 2008]. Они проводили эксперименты по воспроизведению простого сдвига, используя синтети-ческий материал, состоящий из отдельных мелких элементов (т.е.…”
Section: механизм формирования сколов риделяunclassified
“…The Sino-Korean or North China Craton (NCC) has experienced episodic amalgamation and intracrustal reworking since its formation in the Archean (e.g., Wu et al, 2007;Cho et al, 2008;Zhao et al, 2012;Lee and Cho, 2013;Kim et al, 2014). On the basis of Re-Os and Lu-Hf isotope data from mantle xenoliths, it has been inferred that the subcontinental lithospheric mantle (SCLM) underlying the NCC was coupled to the crust during the early Proterozoic, but delaminated at~1.9-1.8 Ga (Gao et al, 2002;Lee and Walker, 2006;Liu et al, 2011;Choi and Mukasa, 2012).…”
Section: Introductionmentioning
confidence: 99%