Paleoelevation reconstruction of the Paleocene-Eocene Gonjo basin, SE-central Tibet
文献类型：期刊论文
| 作者 | Tang, MY (Tang, Maoyun)1,2; Liu-Zeng, J (Liu-Zeng, Jing)1; Hoke, GD (Hoke, Gregory D.)3; Xu, Q (Xu, Qiang)4,5; Wang, WT (Wang, Weitao)1; Li, ZF (Li, Zhanfei)1; Zhang, JY (Zhang, Jinyu)1; Wang, W (Wang, Wei)1; Liu-Zeng, J |
| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 712期号:0页码:170-181 |
| 关键词 | East-central Tibet Stable-isotope Paleoaltimetry Soil Carbonate Formation Indo-asian Collision Lower Crustal Flow Hoh Xil Basin Late Miocene Pedogenic Carbonates Southwestern Tibet Plateau Uplift |
| DOI | 10.1016/j.tecto.2017.05.018 |
| 文献子类 | Article |
| 英文摘要 | The topography evolution of the southeastern Tibetan Plateau provides a constraint for evaluating various geodynamic models of plateau formation. We reconstruct the Paleocene to Eocene paleoelevation of the Cenozoic Gonjo basin in the Qiangtang terrane, using oxygen and carbon stable isotopic results from pedogenic carbonates of the lower Ranmugou Formation. Lithofacies associations indicate that the lower Ranmugou Formation was deposited in alluvial fan and fluvial floodplain environments. U-Pb dating of volcanics within the middle Ranmugou Formation constrains the deposition of the lower Ranmugou Formation as prior to 43.2 Ma. Paleoelevations are calculated using both a thermodynamic model and an empirical relationship. The empirical relationship of elevation-delta O-18 is determined from a series of modern water samples. Calculated paleoelevations indicate that the Gonjo basin attained a minimum average elevation of 2100-2500 m in the early Eocene. Together with recent paleoaltimetry studies in the region, it can be concluded that the crust of southeastern Tibetan Plateau was already thickened by that time. The calculation is based on the section in northern Gonjo basin, where delta O-18 values of paleosol nodules appear to be unaltered, but we cannot rule out the possibility that delta O-18 values of the pedogenic carbonates had been partially reset. Our preliminary results favor tectonic models compatible with pre-Miocene uplift of the SE-central Tibetan Plateau. (C) 2017 The Authors. Published by Elsevier B.V. |
| 学科主题 | 地球物理学 |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000409284500014 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8002]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Liu-Zeng, J |
| 作者单位 | 1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China. 2.Earthquake Adm Chong Qing, Chongqing 401147, Peoples R China. 3.Syracuse Univ, Dept Earth Sci, Syracuse, NY USA. 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China. 5.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Tang, MY ,Liu-Zeng, J ,Hoke, GD ,et al. Paleoelevation reconstruction of the Paleocene-Eocene Gonjo basin, SE-central Tibet[J]. TECTONOPHYSICS,2017,712(0):170-181. |
| APA | Tang, MY .,Liu-Zeng, J .,Hoke, GD .,Xu, Q .,Wang, WT .,...&Liu-Zeng, J.(2017).Paleoelevation reconstruction of the Paleocene-Eocene Gonjo basin, SE-central Tibet.TECTONOPHYSICS,712(0),170-181. |
| MLA | Tang, MY ,et al."Paleoelevation reconstruction of the Paleocene-Eocene Gonjo basin, SE-central Tibet".TECTONOPHYSICS 712.0(2017):170-181. |
入库方式： OAI收割
来源：青藏高原研究所
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