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对前寒武系不同部分上地壳岩石组合主要特征的分析,可阐明地球岩石圈、水圈、生物圈和大气圈的物理和化学环境演化的许多重要问题。并已得出了某些概念,但新资料,特别是有关地层和地质年代顺序的新资料,现在可允许我们对这些问题作更详细的探讨。太古代太古代的上地壳岩层多半是很特征的。它们不仅在所经历的高级变质作用方面不
The analysis of the main characteristics of the upper crustal rock assemblages in different parts of the Precambrian can illuminate many important issues concerning the evolution of the physical and chemical environments of the Earth’s lithosphere, hydrosphere, biosphere and atmosphere. Some concepts have been arrived at, but new information, especially new information on the sequence of geology and geology, now allows us to examine these issues in more detail. The Archean Archean upper crust strata are mostly characteristic. They do not not only suffer from the high level of metamorphism they have undergone