| Is there a great unconformity between Xiamaling and Longshan formations in the North China Craton? |
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| 作者姓名： | Hongwei KUANG Nan PENG Yongqing LIU Yuchong WANG Mingming CUI Xiaoshuai CHEN Dawei QIAO Keining QI |
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| 作者单位： | 1. Institute of Geology,Chinese Academy of Geological Sciences;2. School of Earth Science and Mapping Engineering,China University of Mining and Technology (Beijing);3. School of Resource and Environmental Engineering,Hefei University of Technology |
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| 基金项目： | supported by the National Key Research and Development Program of China (Grant Nos.2022YFF0800302, 2016YFC0601001)；;the National Natural Science Foundation of China (Grant No.42072135)；;the China Geological Survey Program(Grant Nos. DD20221649,DD20190005)；;the Beijing Science and Technology Project (Grant No.Z201100008320007)； |
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| 摘 要： | The existence of a 0.3 Ga "great unconformity" between the Mesoproterozoic "Undefined System" Xiamaling Formation and the "Neoproterozoic" Longshan Formation has long been controversial.In this study,stratigraphy,sedimentology,detrital zircon dating,lithium isotope,and major and trace elements were applied to systematically analyze their relationship.Results demonstrate that coarse to fine sandstone-mudstone normal cycles with different grades and thicknesses exist from the Xiamaling to the Long...
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