Determination of properties of Proterozoic continental flood basalts of western part from North Qilian Mountains |
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Authors: | Linqi Xia Zuchun Xia Jiangtian Zhao Xueyi Xu Hequn Yang Donghong Zhao |
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Institution: | (1) Xi’an Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, 710054 Xi’an, China |
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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. |
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Keywords: | Zhulongguan Group-Jintieshan Group continental flood basalts petrogeochemistry Proterozoic North Qilian Mountains |
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