摘要
对沿地质剖面系统采集的岩石标本进行了氧化物与微量元素分析,并做了高精度磁测。对测得之标本磁化率与氧化物含量,做了逐步回归分析,从而确定了岩石产生磁性的内在因素。依据确定的磁化率与TiO_2、Fe_2O_3、FeO间的数量关系,对标本进行群分析;并以群分析的分类结果,分析不同磁性组的岩石中金属元素平均含量的变化规律。最后探讨了岩系的成矿专属性。
Oxide and microelement contents and magnetic property of rock samples collected along a geological profile are accurately measured.A successive regression analysis is applied to the data obtained in order to find out the correlation of the magnetic susceptibility of rock sample and its oxide (TiO_2,Fe_2 O_3 and FeO) contents.Based upon this correlation,samples are classified by applying a cluster analy-sis and the variation regularity of average contents of metallic elements in rocks of different magneticcombinations is thus found for the determination of metallogenie specialization of a rook series.A trialtest of this method has been conducted to study the metallogenie specialization of the metallic eleme-nts in intermediate acidity quartz-keratophyre in the Baiyin mining area,Gansu by the auther.
出处
《地质与勘探》
CAS
CSCD
北大核心
1992年第10期38-40,共3页
Geology and Exploration
