Chronological dating and tectonic implications of late Cenozoic volcanic rocks and lacustrine sequence in Oiyug Basin of southern Tibet
文献类型：期刊论文
| 作者 | Chen Hehai1,2; Han JingTai1; Ding ZhongLi1; Sun HuiGuo1; Guo ZhengFu1 |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 51期号:2页码:275-283 |
| 关键词 | southern Tibet Oiyug Basin late Cenozoic paleomagnetic dating K-Ar dating |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-008-0007-6 |
| 文献子类 | Article |
| 英文摘要 | Reconstruction of uplift history of the Tibetan Plateau is crucial for understanding its environmental impacts. The Oiyug Basin in southern Tibet contains multiple periods of sedimentary sequences and volcanic rocks that span much of the Cenozoic and has great potential for further studying this issue. However, these strata were poorly dated. This paper presents a chronological study of the 145 m thick and horizontally-distributed lacustrine sequence using paleomagnetic method as well as a K-Ar dating of the underlying volcanic rocks. Based on these dating results, a chronostratigraphic framework and the basin-developmental history have been established for the past 15 Ma, during which three tectonic stages are identified. The period of 15-8.1 Ma is characterized by intense volcanic activities involving at least three major eruptions. Subsequently, the basin came into a tectonically quiescent period and a lacustrine sedimentary sequence was developed. Around 2.5 Ma, an N-S fault occurred across the southern margin of the basin, leading to the disappearance of the lake environment and the development of the Oiyug River. The Gyirong basin on northern slope of the Himalayas shows a similar basin developmental history and thus there is a good agreement in tectonic activities between the Himalayan and Gangdise orogenic belts. Therefore, the tectonic evolution stages experienced by the Oiyug Basin during the past 15 Ma could have a regional significance for southern Tibet. The chronological data obtained from this study may provide some constraints for further studies with regard to the tectonic processes and environmental changes in southern Tibetan Plateau. |
| WOS关键词 | EAST-WEST EXTENSION ; UPLIFT ; PLATEAU ; MIOCENE ; CLIMATE ; PALEOALTIMETRY ; SENSITIVITY ; EVOLUTION ; HIMALAYA ; AGE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000252470400012 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69750]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Han JingTai |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Beilun Entry Exit Inspect & Quarantine Bur China, Ningbo 315800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Hehai,Han JingTai,Ding ZhongLi,et al. Chronological dating and tectonic implications of late Cenozoic volcanic rocks and lacustrine sequence in Oiyug Basin of southern Tibet[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2008,51(2):275-283. |
| APA | Chen Hehai,Han JingTai,Ding ZhongLi,Sun HuiGuo,&Guo ZhengFu.(2008).Chronological dating and tectonic implications of late Cenozoic volcanic rocks and lacustrine sequence in Oiyug Basin of southern Tibet.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,51(2),275-283. |
| MLA | Chen Hehai,et al."Chronological dating and tectonic implications of late Cenozoic volcanic rocks and lacustrine sequence in Oiyug Basin of southern Tibet".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 51.2(2008):275-283. |
入库方式： OAI收割
来源：地质与地球物理研究所
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