郯庐断裂带中南段重磁特征与深部构造

Gravity and Magnetic Characteristics and Deep Structure in Middle and South Part of Tanlu Fault Belt

摘要:

郯庐断裂带是中国东部地球物理场的分界线。它在磁场上呈现出一条NNE向线性正磁异常带，它的重力场特征表现为规模较大的布格重力异常梯度带。在断裂带的两侧，其区域磁场、区域重力场无论是场值大小，还是异常规模以及各异常的展布形态等诸方面都具有明显的区别。地球物理特征揭示郯庐断裂带深部构造，为研究重点矿产分布规律及地震灾害预报具有重要的实际意义。

Abstract:

TanLu fault belt is the boundary of geophysical field in eastern China. It shows a linear magnetic anomaly zone with the trend of NNE. Its gravitational field is characterized by large scale of Bouguer gravity anomaly belt. In both sides of the fault zone