Crustal structure beneath Tien Shan orogenic belt and its adjacent regions from multi-scale seismic data | |
Khan, NG (Khan, N. Ghani)1,2; Bai, L (Bai, Ling)1; Zhao, JM (Zhao, JunMeng)1; Li, GH (Li, GuoHui)1; Rahman, MM (Rahman, M. Moklesur)1; Cheng, C (Cheng, Cheng)1; Yang, JY (Yang, JianYa)1; Bai, L | |
Source Publication | SCIENCE CHINA-EARTH SCIENCES |
2017 | |
Volume | 60Issue:10Pages:1769-1782 |
DOI | 10.1007/s11430-017-9068-0 |
Abstract | As one of the world's most active intracontinental mountain belts, Tien Shan has posed questions for researchers regarding the formation of different tectonic units and active shallow seismicity. Here, we used a huge data set comprising of 7094 earthquakes from local, regional and teleseismic seismic stations. We used waveform modeling and multi-scale double-difference earthquake relocation technique to better constrain the source parameters of the earthquakes. The new set of events provided us with better initial earthquake locations for further tomographic investigation. We found that reverse-faulting earthquakes dominate the whole study area while the fault plane solutions for earthquakes beneath the northwestern Tarim Basin and the Main Pamir Thrust are diverse. There is a low-velocity anomaly beneath Bashkaingdy at depth of 80 km, and high-velocity anomalies beneath central Tien Shan at shallower depths. These observations are the keys to understand the mechanism of Tien Shan's formation because of Tarim Basin northward and Kazakh Shield's southward subduction in the south and north respectively. Velocities beneath western Tien Shan are relatively high. We thus infer that the Western Tien Shan is relatively less deformed than the eastern Tien Shan primarily due to a relatively brittle mantle. |
Subject Area | 地质学 |
WOS ID | WOS:000412466600003 |
Language | 英语 |
Indexed By | SCI |
Keyword | Earthquake Location Algorithm Receiver Function Tomography Ambient Noise Tomography Wave Velocity Structure Hindu Kush Region Central-asia Deep-structure Upper-mantle Cenozoic Tectonics Dynamic Processes |
WOS Research Area | Geology |
WOS Subject | Geosciences, Multidisciplinary ; Geology |
Cooperation Status | 国际 |
Subtype | Article |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itpcas.ac.cn/handle/131C11/7979 |
Collection | 图书馆 |
Corresponding Author | Bai, L |
Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China. 2.CIIT Ctr Hlth Res, Dept Earth Sci, Abbottabad 22060, Pakistan. |
Recommended Citation GB/T 7714 | Khan, NG ,Bai, L ,Zhao, JM ,et al. Crustal structure beneath Tien Shan orogenic belt and its adjacent regions from multi-scale seismic data[J]. SCIENCE CHINA-EARTH SCIENCES,2017,60(10):1769-1782. |
APA | Khan, NG .,Bai, L .,Zhao, JM .,Li, GH .,Rahman, MM .,...&Bai, L.(2017).Crustal structure beneath Tien Shan orogenic belt and its adjacent regions from multi-scale seismic data.SCIENCE CHINA-EARTH SCIENCES,60(10),1769-1782. |
MLA | Khan, NG ,et al."Crustal structure beneath Tien Shan orogenic belt and its adjacent regions from multi-scale seismic data".SCIENCE CHINA-EARTH SCIENCES 60.10(2017):1769-1782. |
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