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Connecting the North China Craton to the east and the Tarim Craton to the west, the Alxa Terrane is a key place in investigating the timing of the final closure of the Paleo-Asian Ocean (PAO). New LA-ICPMS zircon U–Pb dating results reveal ca. 300–268Ma gabbros and diorites in the Bayan Nuru area in the eastern part of the Alxa Terrane. The ~300Ma gabbros show plagioclase accumulations with anorthite...
To constrain the Phanerozoic crustal evolution of the Dunhuang Block, new whole-rock geochemistry, zircon U–Pb ages and Hf isotopic data were determined for three Paleozoic granitic plutons in the northern Altyn Tagh, northwest China. Zircon U–Pb dating of these plutons, including gneissic granite, mylonitic granite and augen gneiss, yielded Middle Devonian to Early Carboniferous crystallization ages...
To determine the petrogenesis and tectonic setting of the Late Paleozoic Xing’an complex in the northern Great Xing’an Range (GXR), northeastern China, we undertook zircon U–Pb dating and geochemical analyses (major and trace elements, and Hf isotopic compositions) on samples obtained from the complex. The Xing’an complex is composed mainly of the Xinshali (XSL), Ershihao (ESH), Xinnangou (XNG) and...
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