新疆惠井子南山地区地球化学异常信息的识别与综合评价

Geochemical abnormal information recognition and comprehensive evaluation in Huijingzi south mountain area Xinjiang

通过泛克里金法和多重分形滤波(S-A)法,对新疆惠井子南山地区成矿能量的综合异常信息进行识别、分析和评价,从而获取不同层次的综合异常信息及控矿因素。研究表明:(1)新疆惠井子南山地区成矿能量的最大变程为2.4km,成矿能量连续性最佳方向为320°,与研究区内的主断裂带F2断裂的走向基本一致,其成矿能量在变程范围内表现出较强的连续性和结构性;(2)低通滤波获取的区域成矿能量的异常在空间分布上与泛克里金法获得的异常在空间上具有较强的相似性,其成矿能量岩控和裂控作用明显;(3)多重分形滤波(S-A)法能够提取多层次的致矿异常信息,其中包括了成矿能量的区域异常和隐伏异常或者背景中的弱异常和隐蔽异常。通过多重滤波方法提取的不同层次的异常,为下一步工作提供了新的研究靶区。

This paper aims to identify,analysis and evaluate the comprehensive abnormal information of mineralization energy in Nanshan mountain area of Huijingzi,Xinjiang province with the methods of universal Kriging and multifractal filtering(S-A),so as to get comprehensive abnormal information and ore-controlled factors at different levels.The results of this research are as follows:(1)Huijingzi,Xinjiang mineralization can be one of the biggest variation range of 2.4km,the direction of the maximum codomain is 320°,basically according with the strike of the main faults F1 in the study area.Its mineralization energy within range can show strong structural features.(2)The mineralization energy's abnormal information in space distribution we got through low pass filtering method is fairly similar to what we got through universal Kriging.The former one has distinct features in rock and crack control.(3)The spectrum-area(S-A)method can extract the multi-level ore anomalies information,including the regional anomalies and hidden anomalies.The mineralization can also concealed in the background of weak anomalies.All these information at different levels got through multiple filtering method is supplied as new target area for the next research.