重磁资料在某沉积变质型铁矿勘查中的联合应用  

The Joint Application of Gravity and Magnetic Data in the Prospecting of Sedimentary Metamorphic

作　　者：倪云鹏[1] 卿晓锋 金路[1] 张风祥[1] 吴艳锋[1] 张磊[1] 

机构地区：[1]河南省航空物探遥感中心,河南郑州450000 [2]中国建材工业地勘中心青海总队,青海西宁810008

出　　处：《资源导刊（地球科技版）》2013年第3期38-41,共4页

摘　　要：沉积变质型铁矿是我国铁矿床的主要类型之一，其储量占全国总储量的57．8％，并具有“大、贫、浅、易（选）”的特点。在某铁矿的地质勘查中，进行高精度重力调查，并结合高精度磁测资料和已知地质资料进行铁矿综合研究，得出该沉积变质型铁矿的特点为重磁同源，且找矿标志为剩余重力高异常。综合运用重磁资料，相互补充、相互验证，充分发挥各种方法的长处，较好地避免了地球物理方法的局限性和结果解释的多解性，取得了良好的找矿效果。The sedimentary metamorphic iron ore is one of dominating iron deposits of China, with its reserves accounted for 57.8% of the national total reserves, and with characteristics of ＂large in size＂, ＂lean in richness, shallow burial, and easy to mine＂. In the geological exploration of iron mine in this area, through the high precision gravity survey, combined with high precision magnetic survey data and the geological data, we have a conclusion that the characteristics of this sedimentary metamorphic iron is gravity and magnetic fields caused by the same source, and the prospecting mark is of high residual gravity anomaly. The integrated use of the gravity and magnetic method, mutual complement and mutual verification, gives full play to all kinds of methods strengths, and can avoid the geophysical methods limitations and results interpretation ambiguity, achieved favorable prospecting effect.

关 键 词：铁矿 重力勘探 磁法勘探 综合物探方法 

分 类 号：P618.13[天文地球—矿床学]