Nd isotopic study of Precambrian basement of South Korea: Evidence for Early Archean crust?

Sr and Nd isotopic compositions of late Paleozoic Youngju and Andong granites in the northeastern Yeongnam Massif, Korea.

“…The line B is the evolution line o ranitic neisses rom (2.37-3.33 (1.44-1.83 The Precambrian basements in Ogcheon Belt and Yeongnam Massif are Proterozoic in age. Al though the existence of Archean basements has not been reported, the crustal residence ages (TDM) by Lan et al (1995) indicate their possible pres ence in Ogcheon Belt and Yeongnam Massif. The Sm-Nd isotopic data on Precambrian orthogneisses from Sobaegsan Massif, northeastern part of Yeongnam Massif, suggest two possible different sources of the basement: one is late Archean (2.6 Ga), LREE-enriched source and the other is Prot erozoic (1.7 Ga) source (Lee et al, 1992).…”

Sedimentary provenance of the Hengyang and Mayang basins, SE China, and implications for the Mesozoic topographic change in South China Craton: Evidence from detrital zircon geochronology

“…Paleoproterozoic age (ca. 1.8-2.0 Ga) zircons could be related to the Luliang orogeny (Sun and Liu, 1985;Lan et al, 1995) which was probably associated with the amalgamation of the major crustal blocks in the North China Craton as well as with the Paleoproterozoic Columbia supercontinent (e.g., Zhao et al, 2002Zhao et al, , 2005Zhao et al, , 2009Rogers and Santosh, 2009; 2007a,b; Santosh et al, 2010;Santosh, 2010). The basement rocks of the Yangtze Block, however, also include Archean and Paleoproterozoic rocks, with average ages of 2.7-2.8 Ga and 2.2-2.5 Ga (Chen and Jahn, 1998).…”

Crustal evolution history of Korean Peninsula in East Asia: The significance of Nd, Ce isotopic and REE data from the Korean Precambrian gneisses.

“…The link-South China block suggests also the possibility of correlation between South Korea and south China (Lan et al, 1995;Qiu et al, 2000). Lan et al (1995) suggested the possibility of the presence of Archean crust in the Korean Peninsula. In addition, based on the range of T DM model age, they also suggested that the southern part of Korean Peninsula (South Korea) might be correlated with the South China Craton.…”

“…1) consists of three Precambrian basement domains that show the difference in their source, formation history, petrography and metamorphism, that is, the Nangrim Massif, the Gyeonggi Massif and the Sobaegsan Massif (Na, 1987;Song and Lee, 1989). The link-South China block suggests also the possibility of correlation between South Korea and south China (Lan et al, 1995;Qiu et al, 2000). Lan et al (1995) suggested the possibility of the presence of Archean crust in the Korean Peninsula.…”