滤波技术在武当-桐柏-大别成矿带地球化学异常提取中的应用

The Application of the Filtering Method to the Sieving and Inspection of Geochemical Anomalies in the Wudang-Tongbai-Dabie Metallogenic Belt

应用滤波技术对武当-桐柏-大别成矿带进行了地球化学异常提取,筛选出了81处综合异常,通过与传统方法的对比,发现滤波法在突出弱小异常方面更具优势。结合成矿带的地质背景,对综合异常进行了分析,总结出武当-桐柏-大别成矿带的矿致异常主要有:变质热液、构造热液共同作用形成的热液型或层控型矿致异常;基性-超基性岩体引起的异常;青峰-襄广断裂带控制的热液型矿致异常;燕山期中酸性岩体引起的异常等类型。研究成果对武当-桐柏-大别成矿带的找矿工作具有较强的指导意义。

This article,which filtering technique is applied to extract geochemical anomaly in WudongTongbai-Dabie mineralization belt,screened out 81 comprehensive anomaly,and,comparing with the traditional method,found that the filtering method in highlighting the weak anomalies more advantages.This article has carried on the analysis to the anomalies,and summarized the Wudang-Tongbai-Dabie mineralization belt anomalies including：The formation of the common role of metamorphic hydrothermal fluid,anomalies caused by tectonic hydrothermal type or stratabound ore;anomalies caused by basic ultrabasic rock bodies;Qingfeng-Xiangguang fault related anomalies;anomalies caused by acidic rock of Yanshan period.This work has guiding significances for prospecting in Wudang-Tongbai-Dabie mineralization belt.