论文部分内容阅读
苏北郯庐断裂以东,淮阴—响水口断裂以北,为江苏省前震旦系较集中出露区。自从刘季辰等于二十年代建立一套地层系统以来,特别是近二十年来,随着区内地质研究程度的提高,以海泗断裂为界,人们将断裂西北的一套地层纳入华北地层区,称“胶东群”或“胶南群;断裂东南的地层则纳入扬子地层区,自下而上划归朐山组、海州群锦屏和云台组。当本文认识到本区是淮阳隆起的东延部分,并将测区作为一个整体研究后,又重新厘定了区域变质地层层序。一、变质地层层序
To the east of the Tan-Lu fault in northern Jiangsu Province and to the north of the Huaiyin-Xiangshuikou fault, the former Sinian system concentrated outcrops in Jiangsu Province. Since the establishment of a set of stratigraphic system by Liu Jichen in the 1920s, especially in the past two decades, with the improvement of the degree of geological research in the area, a set of strata in the northwest of the fault have been integrated into the North China stratum with the Hai-Si fault as a boundary. Called “Jiaodong group” or "Jiaonan group; the strata in the southeast of the fault are included in the Yangtze stratigraphic zone, and are divided into Jieshan Formation, Haizhou Group Jinping Formation and Yuntaai Formation from bottom to top. When this article recognizes that this area is the Huaiyang Uplift The eastern extension of the area, and the study area as a whole study, but also re-determine the regional sequence of metamorphic strata.