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一九七二年在加拿大蒙特利尔举行的一次国际地质会议上,国际地科联寒武系地层学会决定对前寒武系—寒武系的界线进行工作,以便在世界范围内选出层型剖面及其界线,以供各国有关科学研究人员参考。近几年来,前寒武系—寒武系界线工作组先后到澳大利亚、摩洛哥、苏联等地检查和验证层型剖面和层型界线。据目前所了解的情况,现在尚未得到一个统一的地层层序,作为前寒武系和寒武系界线的参考标准。但是目前已描述了许多个值得进一步审查
At an international geological conference held in Montreal, Canada, in 1972, the International Commission of the Cambrian Stratigraphy of the Earth’s Forests decided to work on the Precambrian-Cambrian boundary in order to select stratigraphic sections worldwide And its boundaries for reference of relevant scientific researchers in various countries. In recent years, the Precambrian-Cambrian Boundary Working Group has successively examined and verified the stratigraphic and stratigraphic boundaries in Australia, Morocco and the Soviet Union. As far as is currently known, a unified sequence of stratigraphy has not yet been obtained as a reference for the Precambrian and Cambrian lines. However, many have been described so far for further review