摘要
以比例尺均为1∶50000的地质矿产图,土壤地球化学图,航放U含量、U/K等值线图建立空间数据库;经空间统计分析,应用MORPAS系统的证据权重法筛选证据层,以印支期岩体、200 m半径构造线缓冲区、岩浆岩组合熵等21个证据层作为预测变量;以广东省百顺地区为研究区,根据证据权重法所求得的后验概率圈出多个找矿远景区。
With 1∶50000 geology and mineral resource map,1∶50000 soil geochemical maps and 1∶50000 aerial radiation UU / K contour maps,this paper first established a spatial database for spatial and statistical analysis.Then selected the beneficial uranium metallogenic evidenc by the method of their weight with MORPAS system,21 evidence layers such as pluton of Indo-Chinese period,200 m buffer areas of structure lines,entropy of pluton combination were used to act as prognosis variables.Finaly,several third grade prospect areas were delineated by the values of posterior probability of the weighted evidence.
出处
《铀矿地质》
CAS
CSCD
2011年第5期302-308,320,共8页
Uranium Geology
关键词
MORPAS
证据权重法
预测
评价
百顺
MORPAS
evidence weighting method
prognosis
evaluation
Baishun
