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本文阐明了用多元分析方法解决四川盆地北部中生代砂岩型铀矿床某些地质问题的效果。1.砂岩物源与铀源的探讨:我们应用砂岩重矿物分析资料(稳定矿物及不稳定矿物)作趋势分析,根据趋势分析图中稳定矿物及不稳定矿物的分布趋势确定砂岩的物源与铀源区。这种方法比一般常规等值图优越,它克服了等值图因人而异的作图弊病。
This paper illustrates the effectiveness of using multivariate analytical methods to solve some of the geological problems in the Mesozoic sandstone-type uranium deposits in northern Sichuan Basin. 1. Discussion on sandstone source and uranium source: We use sandstone heavy mineral analysis data (stable minerals and unstable minerals) for trend analysis. According to the distribution trend of stable minerals and unstable minerals in the trend analysis diagram, we can determine the source of sandstone and Uranium source area. This method is superior to the general conventional isomorphism, which overcomes the drastic changes of the contour drawing.