Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
| Ma, Yan1; Pang, Jianzhang1; Zheng, Dewen2; Zhang, Huiping1; Yu, Jingxing1; Li, Chaopeng2; Zhang, Rui3; Hao, Yuqi1; Wang, Ying1; Wu, Ying1 | |
| Lithospheric controls on the formation of the Qilian Shan plateau: Evidence from apatite (U-Th)/He and cosmogenic Ne-21 results in the Central Qilian Shan | |
| Source Publication | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| ISSN | 0031-0182 |
| 2023-06-15 | |
| Volume | 620Pages:13 |
| DOI | 10.1016/j.palaeo.2023.111563 |
| Language | 英语 |
| WOS Research Area | Physical Geography ; Geology ; Paleontology |
| Abstract | The Qilian Shan, located on the northeastern edge of the Tibetan Plateau, shares similar topographic features with Tibet marked by a flat upland plateau flanked by highly-dissected steep margins. Therefore, the research on the topographic evolution of the Qilian Shan will not only facilitate the understanding of its uplift history but also shed light on the uplift process and formation mechanism of the Tibetan Plateau. In this study, we carried out (U-Th)/He and cosmogenic Ne-21 analyses on the granitoid peneplain of the Central Qilian Shan, and our results indicate that the Qilian Shan has inherited a Cretaceous low-relief landscape that formed at low elevation. Apatite (U-Th)/He cooling ages and Ne-21-inferrred erosion rates record a slow exhumation process with a rate of similar to 15 +/- 5 m/Myr of the peneplain from the middle Cretaceous to present. Combined with previous studies on the Cenozoic tectonics of the Qilian Shan, we infer that the prolonged stable landscape of the Central Qilian Shan has been elevated to high elevation along the boundary thrusting by coeval crustal thickening of the Qilian Shan, to form a flat upland plateau. Whereas, compared to the Central Qilian block, the southern and northern Qilian Shan have relatively weak lithosphere, which consist of accretionary systems. The strong thrusting of the boundary faults enabled the southern and northern Qilian Shan uplifted to form highly-dissected margins flanking the flat interior plateau. In this context, our study may provide an analog for understanding the uplift mechanism of the Tibetan Plateau. |
| Keyword | Peneplain surface The Qilian Shan Apatite(U-Th)/he Cosmogenic(21)Ne Plateau topography Tibetan Plateau |
| WOS ID | WOS:001048089800001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74735 |
| Collection | 同位素地球化学国家重点实验室 |
| Corresponding Author | Ma, Yan |
| Affiliation | 1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Yard 1jia, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 101408, Peoples R China |
| Recommended Citation GB/T 7714 | Ma, Yan,Pang, Jianzhang,Zheng, Dewen,et al. Lithospheric controls on the formation of the Qilian Shan plateau: Evidence from apatite (U-Th)/He and cosmogenic Ne-21 results in the Central Qilian Shan[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,620:13. |
| APA | Ma, Yan.,Pang, Jianzhang.,Zheng, Dewen.,Zhang, Huiping.,Yu, Jingxing.,...&Wu, Ying.(2023).Lithospheric controls on the formation of the Qilian Shan plateau: Evidence from apatite (U-Th)/He and cosmogenic Ne-21 results in the Central Qilian Shan.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,620,13. |
| MLA | Ma, Yan,et al."Lithospheric controls on the formation of the Qilian Shan plateau: Evidence from apatite (U-Th)/He and cosmogenic Ne-21 results in the Central Qilian Shan".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 620(2023):13. |
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