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在中生代山东分为鲁东、鲁西、华北平原三个地层分区。鲁西地层分区在不同时期、不同研究者建立和使用了许多不同的岩石地层单位,使用比较混乱。本文对相关的岩石地层单位进行了讨论,提出了新的划分方案。侏罗系建议使用淄博群,划分为中、下侏罗统的坊子组和中、上侏罗统的三台组;白垩系建议使用下白垩统蒙阴组和西洼组;上白垩统固城组。其中固城组的时代根据所产化石由原来归为古新统而改为上白垩统。同时建议,废除“汶南(亚)组”和“分水岭(亚)组”,并且在鲁西地层分区不使用鲁东地层分区的“杨家庄组”、“曲格庄组”、“八亩地组”等岩石地层单位。
In Mesozoic Shandong is divided into Ludong, Luxi, North China Plain three strata. Lusi stratigraphic zoning In different periods, different researchers have established and used many different lithostratigraphic units, which are quite confusing to use. This article discusses the related lithostratigraphic units and proposes a new classification scheme. The Jurassic suggests the use of the Zibo Group, which is divided into the Middle and Lower Jurassic Fangzi Formation and the Middle and Upper Jurassic Santai Formation. The Cretaceous suggests the use of the Lower Cretaceous Mengyin and Xiwa formations. The Upper Cretaceous Gucheng group. Among them, the age of the Gucheng Formation was changed to the Upper Cretaceous according to the fossils produced from the original Paleocene. At the same time, it is suggested that “Wennan (Asia) formation” and “watershed (sub) formation” should be abolished, and the “Yangjiazhuang formation”, “Qugezhuang formation”, “ Group ”rock formation unit.