济南流海庄铁矿床综合物探特征与分析

Characteristics and Analysis on Comprehensive Geophysical Prospecting in Liuhai Iron Deposit in Jinan City

采用可控源大地电磁测深(CSAMT)与高精度磁测相结合的综合研究手段,通过对前期高磁资料的常规数据处理,结合此次综合研究剖面资料,以及对已知验证孔的对比研究综合分析,认为高磁性、低电阻为济南流海庄铁矿床隐伏磁铁矿的异常反映。认为该区铁矿体沿闪长岩体与奥陶世灰岩的上下接触界面分布,矿体主体沿接触带向NE缓倾,异常中心可划分为走向近南北,近平行排列的东西2个主矿段,第一矿段位于异常北西部,南东侧为第二矿段。

In this paper, by using the controlled source audio - frequency magnetotellurics （CSAMT） and high precision magnetic survey methods, through conventional data processing of the early high magnetic data, combining with comprehensive study of profile data, comparative study and comprehensive analysis on well known verification holes, it is regarded that high magnetism and low resistance reflect hidden magnetite anomaly of Liuhai iron deposit in Jinan city. Iron ore bodies distributed along the upper and lower contact interface of diorite and Ordovician limestones. Main ore body inclined to northeast along the contact zones, and abnormal center can be divided into two main parallel. The first section located in the northwest part of ore sections with the trend of SN and EW in anomaly, and the second one located in the southeast part.