Early Paleoproterozoic (ca. 2.36 Ga) post-collisional granitoids in Yunnan, SW China: Implications for linkage between Yangtze and Laurentia in the Columbia supercontinent

Journal of Asian Earth Sciences(2019)

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Abstract
•We present the rarely reported early Paleoproterozoic magmatic records in the Yangtze Block.•The ca. 2.36 Ga Cuoke monzogranites formed within post-collisional setting.•They were likely derived from a source comprising mainly Mesoarchean crustal materials.•The SW Yangtze Block likely underwent a collision event related to the Arrowsmith orogeny.•A spatial connection between Yangtze and Laurentia in the Columbia supercontinent is favored.
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Key words
Zircon U-Pb-Hf isotopes,Geochemistry,Post-collisional granitoids,Early Paleoproterozoic,Yangtze Block,Columbia supercontinent
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