Geochronology, and geochemical and Nd-Sr isotopic characteristics, of Triassic plutonic rocks in the Gyeonggi Massif, South Korea: Constraints on Triassic post-collisional magmatism
Williams, Ian; Cho, Deung-Lyong; Kim, Sung Won
Sensitive high-resolution ion microprobe (SHRIMP) zircon U-Pb ages, and whole-rock chemical and isotopic (Sr-Nd) compositions, have been measured on some Middle Triassic plutonic rocks associated with post-collisional magmatism in the Gyeonggi Massif (Hongseong, Namyang and Yangpyeong areas), South Korea. Plutonic rocks from the southwest (Hongseong) and central (Yangpyeong) Gyeonggi Massif and central Okcheon Belt (Cheongsan) have ages of ca. 227-226, 231 and 225 Ma, respectively. The plutonic...[Show more]
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