| Cenozoic Stratigraphy Deformation History in the Central and Eastern of Qaidam Basin by the Balance Section Restoration and its Implication |
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| 作者姓名： | LIU Dongliang FANG Xiaomin GAO Junping WANG Yadong ZHANG Weilin MIAO Yunf LIU Yongqian ZHANG Yuezhong |
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| 作者单位： | Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China; Graduate School, Chinese Academy of Sciences, Beijing 100049, China;Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;Key Laboratory of Western China’s Environmental Systems, Ministry of Education of China, College of Resources and Environment, Lanzhou University, Lanzhou 730000, China;Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China; Graduate School, Chinese Academy of Sciences, Beijing 100049, China;Research Institute of Petroleum Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China |
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| 基金项目： | This study was co-supported by the President Fund and Innovation Program of Chinese Academy of Sciences (no.: kzcx2-yw-104), the Chinese National Science Foundation grants (no.: 40334038), and the Science and Technology Key Project of Ministry of Education of China (no.: 306016). |
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| 摘 要： | The Qaidam Basin, located in the northern margin of the Qinghai–Tibet Plateau, is a large Mesozoic–Cenozoic basin, and bears huge thick Cenozoic strata. The geologic events of the Indian-Eurasian plate–plate collision since ~55 Ma have been well recorded. Based on the latest progress in high-resolution stratigraphy, a technique of balanced section was applied to six pieces of northeast–southwest geologic seismic profiles in the central and eastern of the Qaidam Basin to reconstruct the crustal shortening deformation history during the Cenozoic collision. The results show that the Qaidam Basin began to shorten deformation nearly synchronous to the early collision, manifesting as a weak compression, the deformation increased significantly during the Middle and Late Eocene, and then weakened slightly and began to accelerate rapidly since the Late Miocene, especially since the Quaternary, reflecting this powerful compressional deformation and rapid uplift of the northern Tibetan Plateau around the Qaidam Basin.
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| 关 键 词： | balance section shortening deformation history Qaidam Basin uplift of the Tibetan Plateau |
Cenozoic Stratigraphy Deformation History in the Central and Eastern of Qaidam Basin by the Balance Section Restoration and its Implication |
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| Authors: | Dongliang LIU Xiaomin FANG Junping GAO Yadong WANG Weilin ZHANG Yunfa MIAO Yongqian LIU Yuezhong ZHANG |
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| Institution: | 1. Center of Basin Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China;3. Key Laboratory of Western China's Environmental Systems, Ministry of Education of China, College of Resources and Environment, Lanzhou University, Lanzhou 730000, China;4. Research Institute of Petroleum Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China |
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| Abstract: | The Qaidam Basin, located in the northern margin of the Qinghai–Tibet Plateau, is a large Mesozoic–Cenozoic basin, and bears huge thick Cenozoic strata. The geologic events of the Indian‐Eurasian plate–plate collision since ～55 Ma have been well recorded. Based on the latest progress in high‐resolution stratigraphy, a technique of balanced section was applied to six pieces of northeast‐southwest geologic seismic profiles in the central and eastern of the Qaidam Basin to reconstruct the crustal shortening deformation history during the Cenozoic collision. The results show that the Qaidam Basin began to shorten deformation nearly synchronous to the early collision, manifesting as a weak compression, the deformation increased significantly during the Middle and Late Eocene, and then weakened slightly and began to accelerate rapidly since the Late Miocene, especially since the Quaternary, reflecting this powerful compressional deformation and rapid uplift of the northern Tibetan Plateau around the Qaidam Basin. |
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| Keywords: | balance section shortening deformation history Qaidam Basin uplift of the Tibetan Plateau |
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