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The South Tianshan Collisional Belt (STCB) and northern margin of the Tarim Block (NTB) are key areas for understanding the prolonged tectonic evolution of the Central Asian Orogenic Belt (CAOB). The Halajun region in Xinjiang province, NW China is located within the tectonic transition zone between STCB and Tarim Blocks. Several granitic intrusions and one mafic–ultramafic complex (Piqiang complex)...
We report picritic porphyrites from the Jianchuan area in western Yunnan, within the Sanjiang–Tethyan Tectonic Domain (STTD), forming part of the the southeastern segment of the East Tethyan tectonic domain, east of the Himalayan–Tibetan Orogen. Feldspar 40 Ar 39 Ar plateau ages from the porphyrites range from 201.7Ma to 190.6Ma. Geochemically, the picritic porphyrites are characterized...
The South Tianshan Collisional Belt (STCB), formed by the collision between the Tarim and Central Tianshan blocks, is pivotal for understanding the complex and prolonged tectonic evolution of the Central Asian Orogenic Belt (CAOB). The Chuanwulu complex is located in the eastern part of the STCB, Xinjiang province, NW China. It consists of a gabbro–diorite unit (unit I) and a monzonite–syenite unit...
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