2-D crustal structures along Wuqing-Beijing-Chicheng deep seismic sounding profile
武清—北京—赤城二维地壳结构和构造

In this paper the crustal velocity structure is obtained along Wuqing-BeijingChicheng profile,using wide angle reflection and refraction data.The results reveal strong vertical and lateral heterogeneities in the crust.The crust has layered features and its thickness gradually increases from 31.0 km in Wuqing to 40.0 km in Yanqing.The strong variation of topography of the crustal interfaces appears around the Beijing area,and the Moho deepens rapidly in the northwestern direction of Beijing area.Five shallow faults in the crust are inferred along this profile,based on the crustal velocity structures and the variations of the crustal interfaces.