Crustal structure and tectonic environment of strong earthquakes in the Tianshan earthquake belt
文献类型：期刊论文
| 作者 | Xu, Y; Liu, FT; Liu, JH; Sun, RM |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2000-03-01 |
| 卷号 | 43期号:2页码:184-193 |
| 关键词 | Tianshan earthquake belt crustal structure velocity image Jiashi earthquake |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | The deep structure of the Tianshan earthquake belt is investigated, based on the seismic tomography of the northwestern China. The result indicates that a ductile detachment layer with low velocities exists in the mid-crust of the Tianshan earthquake belt; the fault in the southern Tianshan extands beyond the depth of the Moho, while the fault in the northern Tianshan only reaches mid-crust; the depth of the Moho of the Tianshan is more than 50km; moreover, the crust-mantle boundary is composed of a wide velocity transition belt. Strong earthquakes are mainly concentrated in the mid-lower crust where a sharp velocity variation is observed near the basin-mountain boundaries. A low velocity zone is found between the Pamir, southern Tianshan and Tarim, with an orientation of NNE, The earthquakes in Wuqia and Jiashi are separately located in the west and east sides of this low velocity zone. It is inferred that the relative motion of the Pamir, southern Tianshan and Tarim is a major reason to cause deformation occurring within this low velocity zone and fracturing near its boundaries. Besides, the intrusion of hot mantle has played an important dynamic role in tectonic activities in this region. |
| WOS关键词 | TIEN-SHAN ; VELOCITY STRUCTURE ; SOURCE PARAMETERS ; UPPER-MANTLE ; CENTRAL-ASIA ; INVERSION ; BENEATH ; REGIONS ; FAULT |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000086144400006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76275]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, Y |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Y,Liu, FT,Liu, JH,et al. Crustal structure and tectonic environment of strong earthquakes in the Tianshan earthquake belt[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2000,43(2):184-193. |
| APA | Xu, Y,Liu, FT,Liu, JH,&Sun, RM.(2000).Crustal structure and tectonic environment of strong earthquakes in the Tianshan earthquake belt.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,43(2),184-193. |
| MLA | Xu, Y,et al."Crustal structure and tectonic environment of strong earthquakes in the Tianshan earthquake belt".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 43.2(2000):184-193. |
入库方式： OAI收割
来源：地质与地球物理研究所
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