森林沼泽区从区域到矿区有效寻找隐伏矿的地球化学方法组合

黑龙江省分布大面积森林沼泽，森林沼泽区地质工作困难且找矿效果差，笔者采用金属活动态测量方法，在“迅速掌握全局，逐步缩小靶区”战略思想的指导下，依次开展了超低密度（1个样/100 km2）地球化学调查→甚低密度（1个样/16 km2）地球化学调查→低密度（1个样/km2）地球化学详细测量→高密度（18个样/km2）异常定位测量等逐步缩小靶区工作。提交的部分靶区找矿效果较好，在地表覆盖层下部及深部发现Pb Zn工业矿体。研究总结的地球化学方法组合在森林沼泽区具有较好的找矿效果，该方法组合对今后这类地区的地球化学调查工作有较好的借鉴和参考意义。

THE COMBINATION OF EFFECTIVE GEOCHEMICAL METHODS IN SEARCH FOR CONCEALED ORE DEPOSITS FROM REGION TO ORE DISTRICT IN THE FOREST-SWAMP AREA

Geological work in search for ore deposits is difficult in wide forest and swamp areas of Heilongjiang Province. In this paper，the prospecting work in order of ultra-low and low density (1 site/100 km2)→very low density (1 site/16 km2)→low density (1 site/km2)→high density (18 site/km2) geochemical investigation was carried out according to the strategic thought of rapid control of overall situation and gradual reduction of the prospect area by using the MOMEO method. The results are satisfactory in part of the prospect area, as shown by the discovery of some Pb Zn ore deposits both in shallow places and in depth. The combination of effective geochemical methods is thus very useful in search for ore deposits in forest and swamp areas.