【摘 要】
：
Thick Neoproterozoic strata are widespread in the Dalian region, Liaodong Peninsula, Northeast China. SHRIMP zircon U-Pb dating of dolerite intruded into Neo-pr
【机 构】
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Department of Applied Geology, Curtin University of Technology, P.O. Box U1987, Perth, Western Austr
【出 处】
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Chinese Science Bulletin
论文部分内容阅读
Thick Neoproterozoic strata are widespread in the Dalian region, Liaodong Peninsula, Northeast China. SHRIMP zircon U-Pb dating of dolerite intruded into Neo-proterozoic strata gives its emplacement age as 211±2 Ma. However, abundant 0.9—1.1 Ga zircons are identified in the dolerite. The age of 1125±38 Ma corresponds with the Grenvillian collisional event. The zircons of 904±15 Ma ages have high Th/U ratios (1.31—2.25) and magmatic oscillatory zones, being possibly related to later magmatism induced during amalgamation of Rodinia.
Thick Neoproterozoic strata are widespread in the Dalian region, Liaodong Peninsula, Northeast China. SHRIMP zircon U-Pb dating of dolerite intruded into Neo-proterozoic strata gives its emplacement age as 211 ± 2 Ma. However, abundant 0.9-1.1 Ga zircons are identified The age of 1125 ± 38 Ma corresponds with the Grenvillian collisional event. The zircons of 904 ± 15 Ma ages have high Th / U ratios (1.31-2.25) and magmatic oscillatory zones, being possibly related to later magmatism induced during amalgamation of Rodinia.
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