摘要
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。其中下泥盆统又划分南北两个相区。通过生物地层学研究对泥盆系建立若干个生物组合带,进行了年代地层(界线地层)的划分和对比。
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. From which Sinian system (three stratigraphic units) is distinguished, Devonian system is divided into three series of lower Devonian middle Devonian & upper Devonian, nine formation (group) and four mimbers, in which Lower Devonian is divided into south facies area and north facies area.
By means of studying biostratigraphy, several assemblage bio zone in Devonian are eastablished, and the chronostratigraphical (limitary strata) division and its correlation are undertaken.
出处
《甘肃地质》
1991年第12期17-37,共21页
Gansu Geology
