The cementation of the conglomerate, dating back to the Jurassic period is so compact that it has hardened into rock and comes into contact with the limestone of the ordovician system in angular uncoformity.

• 砾岩胶结紧密已硬化成岩石,与奥陶系灰岩呈角度不整合接触,时代为侏罗纪。