广域电磁法在滇中红盆矿产勘查中的应用

Application of Wide-area Electromagnetic Method on Mineral Exploration of Hongpen in the Central Region of Yunnan Province

针对工作区成矿地质特征、地球物理特性以及矿区干扰因素等,综合考虑选择广域电磁法开展矿区地质勘查工作,充分发挥其探测深度大、抗干扰能力强以及分辨率高等特点,解决矿区地层分布规律,尤其是六苴段和凹地苴段等主要含矿层的分布情况,以及构造展布和其对矿区地层和矿体的控制、错动情况;并结合地质资料进行综合研究,预测有利成矿靶区。后期经钻孔工程验证,物探预测地层分布规律和有利赋矿靶区位置与钻孔工程揭露地层情况、矿化蚀变位置较为吻合,取得了较好勘查效果。

For the mineralization geological characteristics,geophysical characteristics and the interference factors of mine lot,so the wide-area electromagnetic method is supposed to be the geological exploration method,so its characteristics that large detection depth,strong anti-interference ability,high resolution and the other features,it can solve the stratigraphic distribution low of mine lot,especially main distribution situation of ore-bearing beds of Liuju section and Aodi section,and its extensional structures,as well as its controlling,misalignment situation of mining strata;the geological data was used for comprehensive study,to study on advantageous metallogenic target.The boreholes engineering at later period verified,the following items were coincident well,the stratigraphic distribution law predicated by geophysical exploration,the advantageous location of ore enrichment target,the stratigraphic conditions explored by boreholes engineering and the alteration position of mineralization,the better survey results were obtained.