用欧拉反演方法对巴西Cajazeiras铁矿磁异常解释的效果  

Application effect of Euler inversion method in the interpretation of magnetic anomaly of the Cajazeiras iron deposit,Brazil

作　　者：张叶鹏 

机构地区：[1]湖南省有色地质勘查局二四七队,长沙410129

出　　处：《矿产勘查》2013年第2期197-203,共7页Mineral Exploration

摘　　要：巴西Cajazeiras铁矿工作区属于低纬度区,在对该区实测磁异常数据处理中,作者采用多种不同的构造指数和窗口对于区内实测磁异常进行欧拉反演计算,将其反演结果与磁异常化极结果进行对比分析,结合区内地质特征选取其中一种参数的计算结果作为反演成果。综合分析表明,欧拉反演结果可以较好地反映区内构造特征及岩体分布情况,同时也可以反映出该区铁矿(化)体的分布以及埋深情况,获得了良好的地质效果。The Cajazeiras iron deposit is located in the low latitude district, Brazil. In the process of the ground survey magnetic data, the author applies a varies of structure indexes and windows to invert the magnetic anomalies by Euler inversion algorithm. By comparison of the inversion results of Euler inversion with the ground magnetic interpretation result, one inverted result was selected as the final termination based on the geological conditions, The results indicate that the Euler inversion algorithm can reflect the real struc-tural characteristics and the distribution of rock mass in the deposit area. In addition, the inverted result can also reflect the spatial dis- tribution of the iron ore bodies and buried depth. These have been proved in the field exploration and the geological achievement was obtained.

关 键 词：低纬度区 磁异常 欧拉反演 巴西Cajazeiras铁矿 

分 类 号：P613.22[天文地球—矿床学]