吉南地区新元古代地层沉积模式

吉南地区新元古代地层系古华北板块东北部第一套具有典型意义的盖层沉积，由四个不同类型的不整合面所限。可划分为三个沉积序列（层序）。其沉积相序分别为：河流相（属早期深切河谷沉积）—陆缘斜坡相—滨滩相（席状砂）相结合；近岸砂坝—坝后泻湖—滨滩相组合；碳酸盐台地（开阔缓坡）—台缘生物（藻）礁—礁后盆地相组合，进而建立了其沉积模式。

The sedimentary model of the Neoproterozoic strata in the southern part of Jilin province

The Neoproterozoic strate in the southern part of Jilin province is the first typical cap deposition in the northern part of the palaeo-North China plate, which is only distributed on 4 different surfaces of unconformity. A sedimentary model is established. It can be divided into 3 depositional sequences(succession of strata), i.e. fluvial facies(an early deep river valley deposition)-epicontinental declivity facies-offshore facies(sheet-like sand); inshore bar-barback lagoon-offshore facies; carbonate paltform(open gentle slope)-plate border bioherm(algal)-reef back basin facies.