3-D inversion of gravity and magnetic data and its application in the study on the characteristics of magmatic rocks in the Yin’e Basin and adjacent areas

Abstract Magmatic rocks are crucial in studies of tectonic evolution and hydrocarbon generation and reservoir formation. To elucidate the distribution characteristics of subsurface rocks in the Yin’e Basin, the study utilizes the method of the weighted physical property inversion of random subdomains to conduct a three-dimensional inversion analysis of gravity and magnetic data. The findings indicate that magmatic rocks are predominantly located in the western and southeastern regions. Regional faults significantly influence the distribution of magnetic rocks in the Yin’e Basin. In the eastern part, magmatic rocks are generally larger and predominantly aligned in a northeast-southwest direction, whereas in the western part, they are oriented northwest-southeast, aligning with the tectonic framework of the study area. Intermediate-basic rocks are primarily distributed along fault belts and uplift zones, while acidic rocks are concentrated in depression zones. These results provide substantial insights into the distribution patterns of magmatic rocks and hold significant implications for oil and gas geological exploration in the Yin’e Basin.