%0 Journal Article %1 Mi:2005 %A Mi, Ning %A Wang, Liangshu %A Li, Hua %A Xu, Mingjie %A Chen, Yunping %A Li, Cheng %A Zhang, Yong %A Yu, Dayong %D 2005 %J Chinese Science Bulletin %K imported %N 3 %P 270--275 %T Velocity structure of the crust and uppermost mantle in the boundary area of the Tianshan Mountains and the Tarim Basin %U http://dx.doi.org/10.1007/BF02897538 %V 50 %X Abstract~~A portable 3-component broadband digital seismic array was deployed across the Tianshan orogenic belt (TOB) to investigate the lithospheric structure. Based on receiver function analysis of the teleseismic P-wave data, a 2-D S-wave velocity profile of the boundary area of the TOB and the Tarim Basin was obtained at the depths of 0--80 km. Our results reveal a vertical and lateral inhomogeneity in the crust and uppermost mantle. Four velocity interfaces divide the crystalline crust into the upper, middle and lower crust. A low velocity zone is widely observed in the upper-middle crust. The depth of Moho varies between 42 and 52 km. At the north end of the profile the Moho dips northward with a vertical offset of 4--6 km, which implies a subduction front of the Tarim Basin into the TOB. The Moho generally appears as a velocity transitional zone except beneath two stations in the northern Tarim Basin, where the Moho is characterized by a typical velocity discontinuity. The fine velocity structure and the deep contact deformation of the crust and upper most mantle delineate the north-south lithospheric shortening and thickening in the boundary area of the TOB and the Tarim Basin, which would be helpful to constructing the geodynamical model of the intracontinental mountain-basin-coupling system.

@article{Mi:2005, abstract = {Abstract~~A portable 3-component broadband digital seismic array was deployed across the Tianshan orogenic belt (TOB) to investigate the lithospheric structure. Based on receiver function analysis of the teleseismic P-wave data, a 2-D S-wave velocity profile of the boundary area of the TOB and the Tarim Basin was obtained at the depths of 0--80 km. Our results reveal a vertical and lateral inhomogeneity in the crust and uppermost mantle. Four velocity interfaces divide the crystalline crust into the upper, middle and lower crust. A low velocity zone is widely observed in the upper-middle crust. The depth of Moho varies between 42 and 52 km. At the north end of the profile the Moho dips northward with a vertical offset of 4--6 km, which implies a subduction front of the Tarim Basin into the TOB. The Moho generally appears as a velocity transitional zone except beneath two stations in the northern Tarim Basin, where the Moho is characterized by a typical velocity discontinuity. The fine velocity structure and the deep contact deformation of the crust and upper most mantle delineate the north-south lithospheric shortening and thickening in the boundary area of the TOB and the Tarim Basin, which would be helpful to constructing the geodynamical model of the intracontinental mountain-basin-coupling system. }, added-at = {2010-08-12T23:06:12.000+0200}, author = {Mi, Ning and Wang, Liangshu and Li, Hua and Xu, Mingjie and Chen, Yunping and Li, Cheng and Zhang, Yong and Yu, Dayong}, bdsk-file-1 = {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}, bdsk-url-1 = {http://dx.doi.org/10.1007/BF02897538}, biburl = {https://www.bibsonomy.org/bibtex/250efc9ab0aa9535f0eb5884a62b06cf2/jkmacc}, date-added = {2010-04-03 11:39:04 -0600}, date-modified = {2010-04-03 11:39:04 -0600}, day = 01, interhash = {115a290abced920aa9bfea9ebef1545e}, intrahash = {50efc9ab0aa9535f0eb5884a62b06cf2}, journal = {Chinese Science Bulletin}, keywords = {imported}, m3 = {10.1007/BF02897538}, month = {02}, number = 3, pages = {270--275}, timestamp = {2010-08-12T23:06:15.000+0200}, title = {Velocity structure of the crust and uppermost mantle in the boundary area of the Tianshan Mountains and the Tarim Basin}, ty = {JOUR}, url = {http://dx.doi.org/10.1007/BF02897538}, volume = 50, year = 2005 }