地层是地质工作的基础。远至太古界 ,近至第四系 ,记录地球形成各个时代的地层在中国几乎都能发现 ,且有的具有全球代表性 ,为全球的典型剖面。多年来 ,广大地质工作者对中国的地层做了大量细致的调查研究 ,积累了丰富的资料 ,建立了一系列地层剖面。但是由于地域不同 ,工作进 Stratigraphy is the foundation of geological work. As far back as the Archean, the Quaternary, the stratigraphic record of the Earth to form the era of almost all found in China, and some have a global representation of the typical section of the world. Over the years, the majority of geologists have done a great deal of detailed investigation and research on the strata in China, accumulated rich information and established a series of stratigraphic profiles. However, due to geographical differences, work into