2013•Advanced materials researchOpen access

Formation Age of the Qinling Complex and the early Paleozoic Tectonic Event

Yu Shi, Xijun Liu, Zuo Hai Feng

Abstract

The Qinling orogenic belt (QOB) located between the North China Craton (NCC) and the South China Craton (SCC) is composed of the Northern Qinling Belt (NQB) and the Southern Qinling Belt (SQB). This study presents new geochemical data, zircon U-Pb ages and Hf isotopes from two rocks from the Qinling complex in the NQB. LA-ICP-MS zircon U-Pb dating results suggest that the Qinling complex was formed in early Neoproterozoic and experienced the early Paleozoic metamorphism. High εHf(t) values of 9.0-12.0 for the early Paleozoic zircons indicated that there is mantle-derived magma intruding into the Qinling complex in the early Paleozoic.

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Key concepts: Zircon, Paleozoic, Craton, Geology, Geochemistry, Metamorphism, Tectonics, Mantle (geology)