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本文应用航空磁测资料及其它地球物理资料,研究郯庐断裂带的构造特征与强震活动。文章具体地记述了郯庐断裂带的位置、展布及深部延伸情况等。对郯城以南隐伏断裂地段,用大、中比例尺航磁资料进行了研究。认为昌邑-大店断裂和安丘-莒县断裂是郯庐断裂带的主断裂,延伸到玄武岩层后合并进入地幔。 最后,文章通去磁异常(场)特征,探索强震活动规律,并为1668年8.5级地震震中位置的修正提供了补充依据。
In this paper, we use aeromagnetic data and other geophysical data to study the tectonic features and strong earthquakes of the Tan-Lu fault zone. The article specifically describes the Tan Lu fault zone location, distribution and deep extension of the situation. For the concealed faults in the south of Tancheng, the aeromagnetic data of large scale and medium scale are studied. It is considered that the Changyi-Dadian Branch and the Anqiu-Juxian Fault are the main faults in the Tan-Lu fault zone and extend into basaltic formations and merge into the mantle. Finally, the paper goes to the magnetic anomaly (field) features to explore the laws of strong earthquakes, and provides a supplementary basis for the correction of the epicenter of the M8.5 1668 earthquake.