攀枝花钒钛磁铁矿深部成矿潜力及找矿方向的航磁资料研究

Deep Metallogenic Potential and Prospecting Direction of the Panzhihua V-Ti-Magnetite Deposit Determined From Aeromagnetic Data Analysis

攀枝花钒钛磁铁产出于侵入震旦系大理岩中的海西期辉长岩体,受断裂切割为朱家包包、兰家火山、尖包包、倒马坎等6个区段,累计探明铁矿石储量(A+B+C+D)67.29亿t,是我国重要的矿集区,重要矿段均开展了钻探工作。在航磁异常分析中,攀枝花航磁异常的原因没有得到完全的解释,说明还有一定的找矿潜力。本文以1∶5万航磁数据交互式反演为基础,部分由已完成的由钻孔控制的实测地质剖面资料为约束,结合物性参数和地质信息,对矿体空间分布进行反演,利用10条2.5D反演剖面模拟3D模型,估计了该矿区的深部成矿潜力,为下一步地质勘探提供依据。

The Panzhihua vanadium-titanium magnetite occurs in the Hercynian gabbro bodies which intruded into Sinian marble.Disseeted by fauhs, this deposit comprises six sections including Zhujiabaobao, Lanjiahuoshan,Jianbaobao,and Daomacan and so forth.It has a total proven reserve of iron ore （A＋B＋C＋D） is 67.29 million tons,so becoming an important ore concentrated area in China.Drilling work has been done in major ore sections of this deposit.While in analysis of magnetic anomalies,the reasons for anomalies in this area are not fully explained,implying a possible large exploration potential. This work is based on the interactive inversion of 1：50000 aeromagnetic data as well as measured geological cross sections contlvlled by bnreholes partially. lu comhination with physical properties amt other geological data,the spatial distribution of the ore bodies in this mine is delineated.Using l0 2.5-dimensional inversion profiles to simulate 3D models,the deep mineralization potential of this deposit is estimated to provide evidence for the future geological survey,