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外贝加尔地区中生代浅成侵入体的地质产状、岩石化学和地球化学特征,在一些文献中巳经进行了多次的研究.在这些文献中,指出了外贝加尔西部含有铝以及钼一钨矿体的中生代花岗岩类不同于外贝加尔东部含锡—钨矿的花岗岩,它的碱度较高,并且对于酸性花岗岩岩浆作用的特征元素来说含量较低.根据这两个地区的上述差别,可以推断比较偏碱性的岩浆中挥发元素和稀有元素是贫乏的.这里感兴趣的是,在花岗岩类中碱性程度和基度—酸度的连续变化与稀有元素的浓度值之间是否存在着依赖关系.关于花岗岩类的碱度,可以根据马拉库舍夫等建议的碱度的矿物学
The Mesozoic plutonic intrusions in the Mesozoic Ebaikal region have been geologically productive, petrochemically and geochemically characterized and have been studied several times in several literatures.In these documents, it is pointed out that the western Outer Baikal region contains aluminum and molybdenum-tungsten ore The Mesozoic granitoids are different from the granites containing tin and tungsten in the eastern Outer Baikal and have high alkalinity and low content for the characteristic elements of acid granite magmatism.Based on the above differences of these two areas, It is inferred that the relatively alkaline magmatic lakes are depleted in both volatile and rare elements, and it is of interest here whether there is a dependency between the continuous changes in basicity and the basicity-acidity and the concentrations of the rare elements in the granitic classes Relationships. The alkalinity of granitoids may be based on the mineralogy of the alkalinity recommended by Malakushev et al.