Abstract：In this paper, we finely process a broadband magnetotelluric profile passing through the middle section of Langshan piedmont fault and carry out two-dimensional inversion. We obtain the deep electrical structural characteristics of the middle section of the fault and the blocks on both sides. The results show that the Langshan piedmont fault presents an obvious high and low electrical resistance boundary zone. The upper crust of Langshan uplift on the west side of the fault shows relatively complete high electrical resistance characteristics. The middle and lower crust is dominated by low resistivity bodies. There is a 5 km thick low resistivity sedimentary layer in the shallow part of Linhe basin on the east side of Langshan piedmont fault, and there may be a high resistivity basement below the sedimentary layer. These distribution characteristics indicate that Langshan piedmont fault may be a deep and large fault cutting the lithosphere scale, and it has a risk of developing strong earthquakes.
CAO Cong,ZHAO Lingqiang,DANG Hao et al. Study on Magnetotelluric Detection of the Middle Section of Langshan Piedmont Fault in Inner Mongolia[J]. jgg, 2022, 42(9): 975-979.
