亚统和亚世已被批准为《国际年代地层表》中的正式单位Ratification of subseries/subepochs as formal rank/units in the International Chronostratigraphic Chart
邓涛
摘要(Abstract)：
<正>在国际地层年表中,传统上正式的地质年代和对应的年代地层单位由5级组成,即地质年代的宙(Eon)、代(Era)、纪(Period)、世(Epoch)、期(Age),以及年代地层单位宇(Eonothem)、界(Erathem)、系(System)、统(Series)、阶(Stage)。各个单位通常都有各自的专名,如显生宇、中生界、侏罗系、牛津阶等。比较特别的是统(世),通常是由系(纪)的专名加上表示位置或时间的形容词构成,如上泥盆统和晚泥盆世。
关键词(KeyWords)：
基金项目(Foundation):
作者(Author): 邓涛
DOI: 10.19839/j.cnki.dcxzz.2022.0022
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