Study on deep seismic reflection profile in Xingcheng area of the western Liaoning Province

In order to study the crust structure in Xingcheng area, we did a deep reflection seismic experiment in the western Liaoning Province. This paper shows a 2D seismic profile in study area using a nearly vertical reflection method. The survey line starts from Xilaoye village in Huludao, and ends at Guojiadian near Shoushan, Xingcheng. The survey line is 21. 93 km long and extended in 33 degrees North West. We identified 5 main reflected waves, whose two way travel time is around 6 s, 6. 5 s, 7. 5 s, 8 s, and 10. 4 s, respectively. We described and analyzed geophysical characteristics of these reflected waves, and compared the data with other results from neighborhoods. Then we conclude that the crust in survey area is divided into upper and lower crust, and the upper crust has no obvious reflection, the lower crust shows "sunken" feature; 10. 4 s TWT signals from Moho are observed with high signal-to-noise ratio and good resolution, it tells us the depth of Moho here is roughly 30 km and Moho in the east end near Bohai is 600 m shallower than the other side; and Moho in the study area is composed of some thin layers with different velocity and thickness.