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Eocene and Miocene alkali basalts were collected from boreholes in the Jiyang Sag of the Bohai Bay Basin with the aim of investigating lithospheric evolution beneath the eastern North China Craton (NCC). These alkali basalts have oceanic island basalt (OIB)-like trace element characteristics and overall depleted Nd–Hf isotopes (ε Nd (t)=2.4–6.3; ε Hf (t)=7.0–10.1), consistent with...
The early Paleozoic Wuyi–Yunkai orogeny represents the first extensive tectonothermal event in South China since the Neoproterozoic break-up of the Rodinia supercontinent. The early Paleozoic igneous rocks in the South China Block (SCB) are important for understanding the processes responsible for the orogeny. The Taishan Batholith in the inner Cathaysia Block consists dominantly of granodiorite and...
The Taihua Complex in the Xiong'er area along the southern segment of the Trans-North China Orogen (TNCO) consists of gray gneisses with minor amphibolites. Zircon U–Pb dating of the gray gneisses reveals at least two episodes of Early Paleoproterozoic magmatism (2.30–2.32Ga and 2.07–2.19Ga), each with distinct geochemical features. The Tieluping TTG gneisses of the early suite have very low HREE...
The tectonic setting of South China during the Neoproterozoic remains a subject of debate. Neoproterozoic adakites from Xuelongbao and Datian along the western margin of the Yangtze Craton have been used to argue for an arc setting assuming that these rocks are the melting products of a subducted oceanic slab (Zhou, M.F., Yan, D.P., Wang, C.L., Qi, L., Kennedy, A., 2006a. Subduction-related origin...
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