Ages of activities of the southern "Inner Mongolian axis" marginal fault belt and an analysis of its structure

Abstract: On the basis of several field geological surveys and voluminous regional geological data, the authors propose that the westward extension of the southern "Inner Mongolian axis" marginal fault belt is the Linhe-Jining fault. Aeromagnetic and gravity data show that this fault belt has pronounced anomalies and the Moho depth contour data show that it is a deep fault belt whose influence reaches the mantle. Additionally, this fault belt is also a long-lived one, which was active in different forms in the Mesoproterozoic, Paleozoic, Mesozoic and Cenozoic respectively. This systematically summarizes the characteristics of the activities of the fault belt in different ages and first analyzes multiple types of fault structure formed in its long-continued activities.