利用重磁震资料研究山东半岛及南黄海北部地区火成岩分布

The Distribution Data of Igneous Rocks of the South Yellow Sea and Shandong Peninsula by Gravity and Magnetic Anomalies and Seismic Data

利用近年的地质调查结果,收集了前人的岩性分析及物性分析结果,结合山东半岛和南黄海北部的重力资料和磁力资料及多道地震的资料,分析了研究区重磁场特征,并且将地震识别的火成岩投影到磁力异常平面图内,利用磁力异常化极的垂向一阶导数图作为底图,判定可能由火成岩引起的磁异常,根据相似磁异常特征,划定火成岩的分布位置。分析认为山东半岛火成岩具有沿北东向发育的特点,并且受北东向断裂控制,南黄海北部地区火成岩有沿北东,北北东向发育的特点。

The geophysical data were discussed in the Shandong Peninsula and the South Yellow Sea north area by using the results of geological survey in recent years with the gravity data and magnetic data and seismic data.The igneous rocks and their space distribution were deduced according to the characteristics of gravity and magnetic field and the lithology analysis of transitivity analysis results.The seismic gravity magnetic anomaly data were processed and the comprehensive analysis was discussed in the research area.Analysts believe that the igneous rocks of Shandong Peninsula to the developmental characteristics are along the North East trend,and they are controlled by NE trending faults.The igneous rocks in the northern South Yellow Sea are along the NE and NNE trend characteristics.