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研究苏联境内火成岩在时间上的分布,可以确定各个时期的基性和超基性侵入岩的某些分布特征,在我们看来,这对于了解岩浆活动发育的过程有着重大的意义。兹简单地根据有关材料从前寒武纪开始谈起。古期(太古代和元古代)产
Studying the temporal distribution of igneous rocks in the Soviet Union can determine some distributional characteristics of mantle and ultrabasic intrusive rocks in various periods. In our opinion, this is of great significance for understanding the process of magmatic activity development. It is simply based on the material from the Precambrian began to talk about. Ancient (Archean and Proterozoic) production