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本文分析了江西寻乌菖蒲盆地中生代晚期火山岩系划分的现状及存在的问题，提出了以不整合面为界，将火山岩系划分为上、下两个不同时期的火山岩系，即下火山岩系称为余田群，上火山岩系称为版石群。依据岩性岩相特征，可进一步将余田群划分为水头迳组和菖蒲组，版石群划分为合水组和优胜组。余田群菖蒲组玄武岩全岩Ｒｂ－Ｓｒ等时线年龄为１７６Ｍａ，流纹岩全岩Ｒｂ－Ｓｒ等时线年龄为１５０Ｍａ；版石群优胜组流纹岩全岩Ｒｂ－Ｓｒ等时线年龄为１０４Ｍａ。因此，余田群的地质时代为中侏罗世—晚侏罗世早期，版石群的地质时代为早白垩世。
This paper analyzes the status quo and existing problems of late Mesozoic volcanic families in the Xiuwu Glaze Basin, Jiangxi Province. It is proposed that the volcanic rocks should be divided into upper and lower volcanic rocks in different periods by unconformity, that is, lower volcanic rocks Yu Tianqun, on the volcanic rock known as the version of rock group. According to the characteristics of lithology and lithofacies, the Yutian group can be further divided into two groups, namely, the Crested Ibis group and the Acorus calamus group, which are divided into the Heshui group and the Yusheng group. The Rb-Sr isochron age of the whole rock of the iris group is 176 Ma, the Rb-Sr isochron age of the whole rock is 150 Ma, and the Rb-Sr isochron age of lithofacies 104Ma. Therefore, the Yutian Group’s geologic age was from the Middle Jurassic to the early Jurassic, and the geologic age of the Plateau Group was Early Cretaceous.