北半球有四个主要前寒武地层分布区,即:东欧、西伯利亚、印度和北美地台,连同其周围不同时代的褶皱带。东欧克拉通是世界最大前寒武地层区之一,前寒武地层在波罗的海和乌克兰地盾组成其基底,而且也是地台大部分沉积盖层下部的重要组成部分,已知的如俄罗斯板块。在乌克兰地盾内这些得自不同深度钻孔的沉积 There are four major Precambrian stratigraphic distributions in the Northern Hemisphere, namely the Eastern Europe, Siberia, India and North America, along with folds of different epochs surrounding it. The Eastern European craton, one of the largest Precambrian stratigraphic zones in the world, comprises the basement of the Precambrian strata in the Baltic and Ukrainian shields and is also an important part of most of the basement sedimentary cover, known as the Russian plate. These deposits from boreholes of different depths in Ukrainian shields