Transition from continental collision to tectonic escape? A geophysical perspective on lateral expansion of the northern Tibetan Plateau
文献类型：期刊论文
| 作者 | Deng,Yangfan1,2; Panza,Giuliano F3,4,5; Zhang,Zhongjie1; Romanelli,Fabio3,5; Ma,Ting1; Doglioni,Carlo6; Wang,Peng2; Zhang,Xuemei1; Teng,Jiwen1 |
| 刊名 | Earth, Planets and Space
 |
| 出版日期 | 2014-04-16 |
| 卷号 | 66期号:1 |
| 关键词 | Tibetan plateau Continental collision System transition Net rotation of the lithosphere |
| ISSN号 | 1880-5981 |
| DOI | 10.1186/1880-5981-66-10 |
| 英文摘要 | AbstractA number of tectonic models have been proposed for the Tibetan Plateau, which origin, however, remains poorly understood. In this study, investigations of the shear wave velocity (Vs) and density (ρ) structures of the crust and upper mantle evidenced three remarkable features: (1) There are variations in Vs and ρ of the metasomatic mantle wedge in the hanging wall of the subduction beneath different tectonic blocks of Tibet, which may be inferred as related to the dehydration of the downgoing slab. (2) Sections depicting gravitational potential energy suggest that the subducted lithosphere is less dense than the ambient rocks, and thus, being buoyant, it cannot be driven by gravitational slab pull. The subduction process can be inferred by the faster SW-ward motion of Eurasia relative to India as indicated by the plate motions relative to the mantle. An opposite NE-ward mantle flow can be inferred beneath the Himalaya system, deviating E and SE-ward toward China along the tectonic equator. (3) The variation in the thickness of the metasomatic mantle wedge suggests that the leading edge of the subducting Indian slab reaches the Bangoin-Nujiang suture (BNS), and the metasomatic mantle wedge overlaps with a region with poor Sn-wave propagation in north Tibet. The metasomatic layer, north of the BNS, deforms in the E-W direction to accommodate lithosphere shortening in south Tibet. |
| 语种 | 英语 |
| WOS记录号 | BMC:10.1186/1880-5981-66-10 |
| 出版者 | Springer Berlin Heidelberg |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64161]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Deng,Yangfan |
| 作者单位 | 1.Chinese Academy of Sciences; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics 2.Chinese Academy of Sciences; Guangzhou Institute of Geochemistry 3.University of Trieste; Department of Mathematics and Geosciences 4.China Earthquake Administration; Institute of Geophysics 5.International Centre for Theoretical Physics, SAND group 6.La Sapienza, University of Roma; Department of Earth Sciences |
| 推荐引用方式 GB/T 7714 | Deng,Yangfan,Panza,Giuliano F,Zhang,Zhongjie,et al. Transition from continental collision to tectonic escape? A geophysical perspective on lateral expansion of the northern Tibetan Plateau[J]. Earth, Planets and Space,2014,66(1). |
| APA | Deng,Yangfan.,Panza,Giuliano F.,Zhang,Zhongjie.,Romanelli,Fabio.,Ma,Ting.,...&Teng,Jiwen.(2014).Transition from continental collision to tectonic escape? A geophysical perspective on lateral expansion of the northern Tibetan Plateau.Earth, Planets and Space,66(1). |
| MLA | Deng,Yangfan,et al."Transition from continental collision to tectonic escape? A geophysical perspective on lateral expansion of the northern Tibetan Plateau".Earth, Planets and Space 66.1(2014). |
入库方式： OAI收割
来源：地质与地球物理研究所
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