东昆仑库木艾比热孜地层、侵入岩的致矿性研究

ORE-FORMING APPRAISAL OF STRATA AND INTRUSIVE ROCKS IN THE KUMU’AIBIREZI AREA OF EAST KUNLUN IN XINJIANG

1∶5万区域矿产调查中,利用数量繁多的化探数据,以各元素总体变异系数和本底变异系数的差除以本底变异系数,构成致矿因子.按致矿因子大小,筛选出有价值的成矿元素信息,对区域地层和侵入岩进行致矿性评估,是有效利用化探数据开展不同地质体成矿地球化学研究的方法之一.东昆仑库木艾比热孜地区1∶5万区域地质矿产调查中对地层、侵入岩的致矿性研究就是一个成功的例证.

in the survey of minerals at 1：50 000, through using the various data of chemical exploration, ore-forming factor means the difference between the total variation coefficient and background variation coefficient （after eliminating the high values） of each element, divided by the background variation coefficient. Based on .the ore-forming factor, the effective method of using the chemical exploration data is to screened out the valuable ore-forming elements and then do the ore-forming appraisal of regional strata and intrusive rocks. The success of the survey of minerals at 1：50 000 in Kumu＇aibirezi area is a quite good example.