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Seismic sounding profile and its interpretation in the region of Xiji-Zhongwei, Ningxia, China



Seismic sounding profile and its interpretation in the region of Xiji-Zhongwei, Ningxia, China



Dizhen Dizhi = Seismology and Geology 23(1): 86-92



We have performed 2D processing, calculations and interpretation of the seismic sounding data of a wide-angle reflection and refraction profile from Xiji to Zhongwei. Our purpose is to study the velocity structure of the crust and upper mantle around the arc-shape tectonics near Zhongning, Zhongwei and Tongxin, Ningxia. The results show that the velocity structure of the crust and upper mantle of this region is remarkably not homogeneous. The crustal thickness has big variations. The Moho interface is relatively shallow at the middle of the arc-shape tectonic zone and becomes deeper at the other places.

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