Except for a small part where the Jurassic deposits are cut into by basalts of Cretaceous Period, Jurassic stratum exposures are almost continuous in this area.

• 在这个地区，除了在小张村北面很小的一片地区侏罗系被白垩系玄武岩大量侵入以外，侏罗纪地层露头几乎是连续的。