一种钻孔数据统计与找矿预测新方法——以辽宁白云金矿为例

钻孔资料中与矿体密切相关的信息提取对理解深部物质向上迁移是至关重要的,并且对金属矿产的勘查起到非常重要的作用。本文详细统计了白云地区的钻孔资料,提取侵入围岩地层中的所有岩脉、矿脉以及裂隙的厚度,并计算了每米钻孔中各地质体的垂向伸展程度(即垂向伸展率),绘制了平面分布图。通过对各地质体厚度和垂向伸展率平面分布图分析比较,认为岩脉厚度垂向伸展率与矿体厚度和垂向伸展率分布高度吻合,并且岩脉与裂隙厚度总和的垂向伸展率分布也与后者具有较高的吻合性,而且指示出潜在的北东向成矿潜力区。本文提出一种提取钻孔资料中的控矿因素与找矿预测新方法,希望在相同类型的矿床找矿预测工作中可以进行推广,更加精确地指导深部找矿预测工作。

A new method of statistics of borehole data and prospecting prediction: A case study of Baiyun Gold Mine in Liaoning Province, China

The information extraction closely related to orebody in borehole data is very important to understand the upward migration of deep matter and plays a very important role in the exploration of metal minerals. In this paper, the drilling data of Baiyun area are counted in detail, and the thickness of all the ore bodies, dikes and .ssures that invade the surrounding rock is extracted. The vertical extension ratio of each geological body in each mater borehole is calculated and the plane distribution map is drawn. By analyzing and comparing the plane distribution map of each geological body thickness and vertical extension ratio, it is concluded that the vertical extension ratio of the dike thickness is highly consistent with the distribution of ore body thickness and vertical extension ratio, and the distribution of dike and .ssure thickness and vertical extension ratio is also highly consistent with that of the ore body thickness and vertical extension ratio, and the potential NE-trend metallogenic potential area can be indicated. In this paper, a new method to quantify the vertical crust extension is proposed. It is hoped that it can be popularized in the prospecting and prediction of the same type of deposits and guide the deep prospecting and prediction work more accurately.