Gravity field separation, density inversion and crustal tectonics in Kang-Dian region

摘要

Kang-Dian region is located on the southern part of the famous North-South active tectonic belts, which is a part of China-Mongolia central axes strong earthquake belt and the huge crustal thickness undulation belt. Many geolo-gists are interested in it due to its seismicity and abundant mineral resource. We inverted mean crustal density and density anomalies on the different layer in the depth range of 10~100 km, using the gravity field that is treated by separation and adjustment. Combining other geophysical data to analyze the density data, the results show that there is difference both in tectonic feature and geophysical feature between Kang-Dian lozenge block and its west-ern and eastern parts.