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中国地层委员会2014年发布的《中国地层表》,在年代地层和岩石地层划分等方面和原地层表相比都有很大变化,作者在对该表进行初步解读的基础上,将冀北侏罗系与其做了对比,以期引起广大同行的关注和重视。作者认为:河北省北部的下花园组时代应由早—中侏罗世改为中侏罗世,层位与西山窑组一致;南大岭组与八道湾组层位相当;九龙山组和髫髻山组的层位相当于头屯河组;后城组时代为晚侏罗世,同层位地层是土城子组;张家口组划归下白垩统。
The Chinese Stratigraphic Table published by the Chinese Stratigraphy Commission in 2014 has great changes compared with the original stratigraphic table in terms of stratigraphy and lithostratigraphic division. The author, based on the preliminary interpretation of the table, Luo Department and its comparison, with a view to arouse the concern and attention of the majority of peers. The author believes that the age of Xiahuanyuan Formation in the northern part of Hebei Province should be changed from early-middle Jurassic to Middle Jurassic and the horizon is consistent with that of Xishanyao Formation; that of Nandalaing Formation and Badaowan Formation is similar; The layers of the Jishan Formation correspond to the Toutunhe Formation; the Houcheng Formation era is Late Jurassic and the Tujiakou Formation belongs to the Tuchengzi Formation; and the Zhangjiakou Formation is under the Cretaceous.