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Determination of properties of Proterozoic continental flood basalts of western part from North Qilian Mountains
Authors:Linqi Xia  Zuchun Xia  Jiangtian Zhao  Xueyi Xu  Hequn Yang  Donghong Zhao
Institution:(1) Xi’an Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, 710054 Xi’an, China
Abstract:Proterozoic volcanic rocks of the western part from the North Qilian Mountains are the products of continental rift volcanism, belonging to continental flood basalts, the petrogeochemistry of which apears to suggest that they are derived from sub-lithospheric mantle plume sources, but that they also show evidence of continental lithosphere components involvement. Their formation is the consequences of plume-lithosphere interactions and is precursive to the opening of the North Qilian Early-Paleozoic ocean basin.
Keywords:Zhulongguan Group-Jintieshan Group  continental flood basalts  petrogeochemistry  Proterozoic  North Qilian Mountains
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