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| DOI | 10.1007/s11434-009-0387-9 |
| Moho offset beneath the central Bangong-Nujiang suture of Tibetan Plateau | |
| Xu Qiang; Zhao JunMeng; Cui ZhongXiong; Pei ShunPing; Liu HongBing | |
| 通讯作者 | Xu, Q (通讯作者) |
| 发表日期 | 2010 |
| ISSN | 1001-6538 |
| EISSN | 1861-9541 |
| 起始页码 | 607 |
| 结束页码 | 613 |
| 卷号 | 55期号:7 |
| 英文摘要 | By analyzing teleseismic waveforms recorded by 53 stations of Hi-Climb profile passing through the central Bangong-Nujiang suture (BNS), a total of 4764 high- quality receiver functions are obtained. The average crustal thickness and Poisson's ratio beneath each station are estimated using the travel time of Ps and PpPs of the Moho. The discontinuities such as the Moho, the 410- and 660-km interfaces are also studied using the common converted points (CCP) time to depth migration of receiver functions. The main results are as follows: (1) The Moho of Lhasa terrane and that of Qiangtang terrane nearby BNS are overridden and offset by similar to 10 km. The structural geometry shows a northward uplifting and the southward deepening for the Moho of Lhasa terrane and Qiangtang terrane, respectively, which is related to the reactivated structure beneath BNS since Cenozoic era. (2) The variation range of Poisson's ratios along the profile is between 0.237 and 0.280, indicating that the crust is mainly composed of felsic and intermediate rocks. The anti-correlation between the crustal thickness and Poisson's ratio suggests that thicker crust beneath the southern Qiangtang terrane may be related to the successive thrust of felsic and intermediate rock of Lhasa terrane. (3) The thickness of the mantle transition zone along the profile remains about 255 km, implying that the tectonic activities caused by the India-Asia collision are confined to the depths above 410 km. |
| 关键词 | CRUSTAL STRUCTURESEISMIC EVIDENCEPOISSON RATIOCENTRAL ANDESMANTLESUBDUCTIONLITHOSPHERE |
| 英文关键词 | P receiver function; Moho offset; CCP time to depth migration; upper mantle discontinuity; Bangong-Nuiang suture |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:000274543400007 |
| 来源期刊 | CHINESE SCIENCE BULLETIN
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/257730 |
| 推荐引用方式 GB/T 7714 | Xu Qiang,Zhao JunMeng,Cui ZhongXiong,et al. Moho offset beneath the central Bangong-Nujiang suture of Tibetan Plateau[J]. 中国科学院青藏高原研究所,2010,55(7). |
| APA | Xu Qiang,Zhao JunMeng,Cui ZhongXiong,Pei ShunPing,&Liu HongBing.(2010).Moho offset beneath the central Bangong-Nujiang suture of Tibetan Plateau.CHINESE SCIENCE BULLETIN,55(7). |
| MLA | Xu Qiang,et al."Moho offset beneath the central Bangong-Nujiang suture of Tibetan Plateau".CHINESE SCIENCE BULLETIN 55.7(2010). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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