Sedimentary record of climate change across the Eocene/Oligocene transition from the Qaidam Basin, northeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang, Yadong3,4; Yuan, Sihua5; Zhang, Tao1,2; Liu, Xiaoyan5; Liu, Yongjiang6; Miao, Yunfa3,4 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2021-02-15 |
| 卷号 | 564页码:10 |
| 关键词 | Terrestrial record Grain size Sediment color Petrography Hongsanhan section |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2020.110203 |
| 英文摘要 | The Eocene/Oligocene transition (EOT) was marked by a major environmental reorganization accompanied by an abrupt shift of the Earth system from "greenhouse" to "icehouse" conditions, which is well documented in marine sedimentary records. Although there are an increasing number of terrestrial records documenting this major climatic reorganization, high-resolution sedimentologic and petrographic evidence from terrestrial contexts is sparse, and the processes driving the EOT which affected the formation of continental detrital sediments are unclear. Here we present evidence from lithofacies, lithology, sediment color, and sediment grain size from a section in the northern part of the NE Tibetan Plateau (Tibetan Plateau), which spans the EOT. The results indicate that major changes in the grain size (coarsening), chromaticity a* (redness increasing), thick gypsum layers (disappearance), structural maturity (decreasing roundness and sorting), sediment compositional maturity (increasing content of lithic, feldspar and mafic minerals) of silt and sandstone occurred at similar to 33.8 Ma, which were considered to be a response to the EOT. The synchronous changes in sedimentological and petrological characteristics and weathering proxies in the Qaidam Basin (Qaidam Basin) and neighboring basins suggest that the climate-forced weakening of weathering and erosion may have been the direct cause of those proxy changes the direct cause of those proxy change. Global cooling is speculated to have been the first-order driving factor in regulating climatic evolution and weathering responses in the Qaidam Basin and even the Asian interior at the EOT. A conceptual model is presented which summarizes the mechanisms responsible for the observed changes in sedimentary characteristics across the EOT. |
| WOS关键词 | EOCENE-OLIGOCENE BOUNDARY ; XINING BASIN ; GRAIN-SIZE ; PROVENANCE ANALYSIS ; CENOZOIC UPLIFT ; LANZHOU BASIN ; MIDDLE EOCENE ; MA ; ARIDIFICATION ; CHINA |
| 资助项目 | National Natural Science Foundation of China[41971013] ; National Natural Science Foundation of China[41772181] ; National Natural Science Foundation of China[41601007] ; National Natural Science Foundation of China[41772200] ; National Natural Science Foundation of China[41877298] ; Second Tibetan Plateau Scientific Expedition (STEP) program[2019QZKK0707] ; Gansu Provincial Key Laboratory of Petroleum Resources[SZDKFJJ20150604] ; Geological Survey Bureau[x2-2019-052] ; Geological Survey Bureau[D1910] |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000636756800023 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Gansu Provincial Key Laboratory of Petroleum Resources ; Gansu Provincial Key Laboratory of Petroleum Resources ; Geological Survey Bureau ; Geological Survey Bureau ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Gansu Provincial Key Laboratory of Petroleum Resources ; Gansu Provincial Key Laboratory of Petroleum Resources ; Geological Survey Bureau ; Geological Survey Bureau ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Gansu Provincial Key Laboratory of Petroleum Resources ; Gansu Provincial Key Laboratory of Petroleum Resources ; Geological Survey Bureau ; Geological Survey Bureau ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Second Tibetan Plateau Scientific Expedition (STEP) program ; Gansu Provincial Key Laboratory of Petroleum Resources ; Gansu Provincial Key Laboratory of Petroleum Resources ; Geological Survey Bureau ; Geological Survey Bureau |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101160]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Wang, Yadong |
| 作者单位 | 1.Key Lab Western Chinas Mineral Resources Gansu Pr, Sch Earth Sci, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, 382 Donggang Western Rd, Lanzhou 730000, Gansu, Peoples R China 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 5.Coll Earth Sci, Inst Disaster Prevent, Sanhe 065201, Peoples R China 6.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yadong,Yuan, Sihua,Zhang, Tao,et al. Sedimentary record of climate change across the Eocene/Oligocene transition from the Qaidam Basin, northeastern Tibetan Plateau[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,564:10. |
| APA | Wang, Yadong,Yuan, Sihua,Zhang, Tao,Liu, Xiaoyan,Liu, Yongjiang,&Miao, Yunfa.(2021).Sedimentary record of climate change across the Eocene/Oligocene transition from the Qaidam Basin, northeastern Tibetan Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,564,10. |
| MLA | Wang, Yadong,et al."Sedimentary record of climate change across the Eocene/Oligocene transition from the Qaidam Basin, northeastern Tibetan Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 564(2021):10. |
入库方式： OAI收割
来源：地质与地球物理研究所
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