Catastrophic flashflood and mudflow events in the pre-historical Lajia Ruins at the northeast margin of the Chinese Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang, Haiyan4; Huang, Chun Chang4; Pang, Jiangli4; Zhou, Yali4; Cuan, Yuda4; Guo, Yongqiang2 ; Zhang, Yuzhu3; Zhou, Qiang1; Rong, Xiaoqing4; Shang, Ruiqing4
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| 刊名 | QUATERNARY SCIENCE REVIEWS
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| 出版日期 | 2021 |
| 卷号 | 251页码:106737 |
| 关键词 | Tibetan Plateau Lajia Ruins Holocene Surface processes Stratigraphic sequence Pre-historical catastrophes |
| ISSN号 | 0277-3791 |
| DOI | 10.1016/j.quascirev.2020.106737 |
| 产权排序 | 2 |
| 通讯作者 | Huang, Chun Chang(cchuang@snnu.edu.cn) |
| 文献子类 | Article |
| 英文摘要 | Global change induced regional environmental variation and related catastrophic surface processes have greatly affected human life and social development during the last decades. These occurrences have also been highlighted by pre-historical catastrophes exposed by archaeological excavation in the Lajia Ruins at the northeast margin of the Tibetan Plateau, which has attracted considerable focus from both geologists and the world media. The cause of the disasters responsible for the destruction of the Lajia Settlement (C-14 age 4.15-3.85 ka BP) of the Qijia Culture remains controversial due to insufficient investigation of the Holocene sedimentary succession needed to establish a complete pedo-stratigraphic sequence and chronology, and thus to precisely constrain environment variation and related surface processes at that time. During our field investigations, a complete and continuous Holocene soil and sediment profile was identified in the northern part of the Lajia Ruins uniquely. Soil and sediment samples were taken systematically for physical and chemical analysis and optically stimulated luminescence (OSL) dating after detailed field observations and descriptions. The results demonstrate that the pedo-stratigraphic sequence includes Malan loess (L1-1, >11.50 ka BP) and transitional loess (L-t, 11.50-8.50 ka BP) in the bottom, a composite palaeosol (S0, 8.50-3.10 ka BP) in the middle, and recent loess (L0, 3.10e1.50 ka BP) and modern soil (MS, 1.50-0 ka BP) in the top. This pedo-stratigraphic sequence is comparable to those identified in the central part of the Loess Plateau. However, the mid-Holocene palaeosol (S-0) is inserted by three layers of red clay (RC1, RC2, and RC3) and flashflood deposit (FFD), and thus subdivided into four sub-layers (S0-upper, S0- upper middle, S0-lower middle, and S0-lower). The red clays and the flashflood deposit are inferred to represent abrupt events of flashflood and mudflow that were dated to 3.96-3.65 ka by OSL and to 3.85-3.60 ka BP by AMS C-14 methods. Indeed, the entire settlement, dwellings, pottery artifacts, and human skeletons in the Lajia Ruins are directly packed by these deposits. The Lajia Ruins is thus considered to be destroyed by enormous flashfloods and mudflows coming from the Ganggou and Lujiagou gullies, which submerged the settlement at C-14 3.85 ka BP or OSL 3.96 ka. These disastrous events are related to climatic deterioration since 4.20 ka BP that has resulted in severe convective weather and strong rainstorms affecting the northeast margin of the Tibetan Plateau. With consideration of the badly deformed ground and dwelling floors in the Lajia Ruins by crisscrossing earthquake fissures, that are also infilled and packed by flashflood and mudflow deposits, it is concluded that great earthquakes occurred as the first hitting to the settlement at Lajia. The enormous flashfloods and mudflows may have been induced by multiple earthquakes and rainstorms simultaneously. These results bear important implications for a better understanding of pre-historic environmental change and human-land relationship evolution at the northeast margin of the Tibetan Plateau. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS关键词 | UPPER YELLOW-RIVER ; GUANTING BASIN ; LOESS PLATEAU ; HOLOCENE CLIMATE ; GREAT FLOOD ; QINGHAI ; EVOLUTION ; LUMINESCENCE ; RECORDS ; RECONSTRUCTION |
| 资助项目 | National Natural Science Foundation of China[41771110] ; National Natural Science Foundation of China[41971116] ; Fundamental Research Funds for the Central Universities[2019TS021] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000600739300025 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.imde.ac.cn/handle/131551/55134]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Huang, Chun Chang |
| 作者单位 | 1.Qinghai Normal Univ, Sch Geog Sci, Xining 810008, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; 3.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Peoples R China; 4.Shaanxi Normal Univ, Sch Geog & Tourism, 620 West Changan Ave, Xian 710119, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Haiyan,Huang, Chun Chang,Pang, Jiangli,et al. Catastrophic flashflood and mudflow events in the pre-historical Lajia Ruins at the northeast margin of the Chinese Tibetan Plateau[J]. QUATERNARY SCIENCE REVIEWS,2021,251:106737. |
| APA | Wang, Haiyan.,Huang, Chun Chang.,Pang, Jiangli.,Zhou, Yali.,Cuan, Yuda.,...&Shang, Ruiqing.(2021).Catastrophic flashflood and mudflow events in the pre-historical Lajia Ruins at the northeast margin of the Chinese Tibetan Plateau.QUATERNARY SCIENCE REVIEWS,251,106737. |
| MLA | Wang, Haiyan,et al."Catastrophic flashflood and mudflow events in the pre-historical Lajia Ruins at the northeast margin of the Chinese Tibetan Plateau".QUATERNARY SCIENCE REVIEWS 251(2021):106737. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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