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秦岭的志留系可大致分为东、中、西三段,东段又可分南、中、北三带,南带以瓦房店—岚皋大断层与中带分界,称高滩—兵房街小区,其沉积性质属秦岭地槽与扬子地台之间的过度型沉积.原地质部秦岭大队最早(1956)在安康、紫阳一带划分了志留系三统,以后地质科学院(1960)、林宝玉曾建立如下地层系统:
The Silurian of the Qinling Mountains can be broadly divided into three sections: the east, the middle and the west. The east section can be divided into three zones: the south, middle and north. The south zone is divided by the Wafangdian - Langao fault and the middle belt, Street area, the sedimentary nature of the Qinling Gully and the Yangtze platform between the over-type sedimentation. The former Department of Geology Qinling Brigade (1956) in the Ankang, Ziyang area divided Silurian system, after the Academy of Geological Sciences (1960), Lin Baoyu has established the following stratigraphic system: