Erosion history of the Tibetan Plateau since the last interglacial: constraints from the first studies of cosmogenic Be-10 from Tibetan bedrock
文献类型：期刊论文
| 作者 | Lal, D; Harris, NBW; Sharma, KK; Gu, ZY; Ding, L; Liu, TS; Dongal, WQ; Caffee, MW; Jull, AJT |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2004 |
| 卷号 | 217期号:1-2页码:33-42 |
| 关键词 | Tibetan Plateau cosmochronology erosion tectonics |
| ISSN号 | 0012-821X |
| DOI | 10.1016/S0012-821X(03)00600-9 |
| 文献子类 | Article |
| 英文摘要 | The cosmogenic Be-10 exposure histories of in situ bedrock surfaces from the Tibetan Plateau indicate low erosion rates of <30 mm/ka in southern and central Tibet during the last interglacial-glacial cycle that contrast strongly with unusually rapid erosion rates (60-2000 mm/ka) for Kunlun in northern Tibet during the Holocene, comparable with published values from the Himalaya. By comparing apatite fission-track ages with cosmogenic data, erosion rates in southern Tibet appear to be decelerating since the Miocene, whereas in the Kunlun, erosion rates have accelerated over the same timescale. Such secular changes suggest that the southern and central regions of the plateau had formed their present flat relief by the Pleistocene. Unusually high erosion rates along the northern margin of the plateau may reflect intense tectonic activity during the Holocene. These findings indicate that over much of the high plateau erosion rates are exceptionally low, and therefore the sources of detritus carried by the great Asian rivers that rise in Tibet lie overwhelmingly in bedrocks at lower altitudes. This study illustrates the potential of cosmogenic studies for unraveling the most recent phase of the erosion/exhumation history of orogenic belts that cannot be resolved by either Ar-isotope or fission-track thermochronometers. (C) 2003 Elsevier B.V. All rights reserved. |
| WOS关键词 | SOUTHERN TIBET ; KUNLUN BATHOLITH ; DENUDATION RATES ; LATE PLEISTOCENE ; THERMAL HISTORY ; GLOBAL CLIMATE ; MYR AGO ; UPLIFT ; AL-26 ; EXHUMATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000187781600003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64297]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Lal, D |
| 作者单位 | 1.Univ Calif San Diego, Scripps Inst Oceanog, Geosci Res Div, La Jolla, CA 92093 USA 2.Open Univ, Dept Earth Sci, Milton Keynes MK7 6AA, Bucks, England 3.Wadia Inst Himalayan Geol, Dehra Dun 248001, Uttar Pradesh, India 4.Chinese Acad Sci, Inst Geol, Beijing 100029, Peoples R China 5.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA 6.Univ Arizona, Dept Geosci, NSF Arizona Accelerator Mass Spectrometer Lab, Tucson, AZ 85721 USA |
| 推荐引用方式 GB/T 7714 | Lal, D,Harris, NBW,Sharma, KK,et al. Erosion history of the Tibetan Plateau since the last interglacial: constraints from the first studies of cosmogenic Be-10 from Tibetan bedrock[J]. EARTH AND PLANETARY SCIENCE LETTERS,2004,217(1-2):33-42. |
| APA | Lal, D.,Harris, NBW.,Sharma, KK.,Gu, ZY.,Ding, L.,...&Jull, AJT.(2004).Erosion history of the Tibetan Plateau since the last interglacial: constraints from the first studies of cosmogenic Be-10 from Tibetan bedrock.EARTH AND PLANETARY SCIENCE LETTERS,217(1-2),33-42. |
| MLA | Lal, D,et al."Erosion history of the Tibetan Plateau since the last interglacial: constraints from the first studies of cosmogenic Be-10 from Tibetan bedrock".EARTH AND PLANETARY SCIENCE LETTERS 217.1-2(2004):33-42. |
入库方式： OAI收割
来源：地质与地球物理研究所
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