Petrogenesis of Early Cretaceous Magmatism in Eastern China and the Gyeongsang Basin, Korean Peninsula

Abstract

핵심어: 백악기초기, 동중국, 경상분지, 현무암, 암석권맨틀Abstract: Geochemical characteristics of the Early Cretaceous igneous rocks from eastern China and the Gyeongsang Basin, Korean Peninsula has been summarized. They have wide range of lithological variation with extrusive picrite-basalt-andesite-trachyte-rhyolite and lamprophyre, and intrusive gabbro-dioritemonzonite-syenite-granite and diabase in eastern China, mostly belonging to the high-K calc-alkaline or shoshonitic series. The volcanic rocks intercalated with the Hayang Group sedimentary assemblages in the Gyeongsang basin are high-K to shoshonitic basaltic trachyandesites. The Early Cretaceous basaltic rocks studied mostly fall within the field of within-plate basalts on the Zr/Y-Zr and Nb-Zr-Y tectonic discrimination diagrams. On a Sr-Nd isotope correlation diagram, basaltic rocks from the North China block (NCB) and the continent-continent collision zone (CZ) between the North and South China blocks plot into the enriched lower right quadrant along the extension of the mantle array. The initial Pb(t) correlation. Meanwhile, the SCB basaltic

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“…돌배의 발효물 또한 비슷한 경향을 보였는데, gallic acid는 감소하고 protocatechuic acid, chlorogenic acid, 4-hydroxybenzoic acid, rutin 등이 증가하는 것을 확인였다. 품 종별 배에 chlorogenic acid, caffeic acid, gallic acid, 4hydroxybenzoic acid, rutin, ρ-coumaric acid 등을 함유하고 있다는 앞선 연구와 일치하는 경향을 보여줬다 (Choi, 2009).…”

Petrology of the Syenites in Hapcheon, Korea

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