By means of the theory and method of multiple-stratigraphic classification, It is divided anew for sea facies Devonian system to distribution south section of western Qinling in Gansu.

• 本文运用多重地层划分的理论和方法,对分布在甘肃省西秦岭南部的海相泥盆系,重新进行了划分。 从中分出震旦系(三个地层单位),泥盆系划分了下、中、上三统9个岩组(群)、4个岩段。