Abstract
The Alxa block is situated to the south of the CAOB, situated to the east of the Tarim block and west of the NCC. Voluminous intrusive and extrusive rocks outcrop in the northern Alxa block and adjacent southern CAOB. Most of them are thought to be related to the closure of the Paleo-Asia Ocean and subsequent collision [Wu, 1993; Wu et al., 1998; Zhang et al., 2013; Dan et al., 2016].
Highlights
The Alxa block is situated to the south of the CAOB, situated to the east of the Tarim block and west of the NCC
Evolution of the northern Alxa block in the Paleozoic: constraints from geochronology, geochemical characteristics and zircon Hf isotopes of granitoids
The northern Alxa block is proposed to consist of two tectono-magmatic belts, the Zongnaishan-Shalazhashan belt to the north and the Yabulai-Nurugong-Honggueryulin belt to the south (e.g. [Wang et al, 1992, 1994; Wu, 1993; Zheng et al, 2014])
Summary
The Alxa block is situated to the south of the CAOB, situated to the east of the Tarim block and west of the NCC. Lei Zhang1, Tao Wang1, Jian-jun Zhang1, Xing-jun Shi2, Ying Tong1 For citation: Zhang L., Wang T., Zhang J.-J., Shi X.-J., Tong Y., 2017. Evolution of the northern Alxa block in the Paleozoic: constraints from geochronology, geochemical characteristics and zircon Hf isotopes of granitoids.
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