Identification of Local Structures Using Gravity and Magnetic Data

摘要

Generally, the local structures are studied from second vertical derivative gravity anomaly in reconnaissance survey because of shortage of seismic data and other information. But if igneous rocks are pervasive, thick and large enough, it causes gravity anomalies with a certain extent sizes and amplitudes. So when we start the research of the local structures in this stage, we need to synthetically analyze and interpret gravity and magnetic data, then we will achieve the aim to identify local structures from all types of gravity anomalies more reliably. This paper presents a case to identify the local structures by using gravity and magnetic data, and finally the reliable local structures are inferred.