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西伯利亚乌楚尔—马亚地区的里菲沉积物,根据许多特征的组合是可以区别的,这些特征是:剖面的地层位置、地理分布范围、丰富的植石、以及与最老的下寒武统和最年轻的前里菲(上阿菲宾)建造存在明显的地层关系。我们认为该地区里菲岩层是非常重要的参考剖面。一般把它当作里菲的副层型剖面,就确定的界线和各划分单位的古生物特征来说,是一种主要的附属层型剖面。况且,在里菲期间具有不同发展历史的几组构造带汇聚的这个重要地区(650×750公里)(图1),可作为讨论上前寒武纪的岩石地层、
The riftific sediments in the Uchuar-Maya region of Siberia are distinguishable on the basis of a combination of a number of characteristics: the position of the stratigraphic formation, the geographical distribution, the abundance of vegetation, and the association with the oldest Lower Cambrian There is a clear stratigraphic relationship between the system and the youngest former Philippine (Upper Afyon Line). We think the Reilly formation in the area is a very important reference profile. It is generally regarded as a subfamily profile of the Rifphy, which is a major sublayer profile in terms of the defined boundaries and palaeontological features of each subdivision unit. Moreover, this important area (650 x 750 km) where several tectonic belts with different development histories converged during the Rift period (Figure 1) can be used as a basis for discussing the Precambrian lithosphere,