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陕西洛南县石门至陈耳沟一带的上前寒武系,属华北地层区南缘的金堆城—鲁山小区。地层出露良好,构造简单,各群、组之间的接触关系清楚。三十年代,赵亚曾、黄汲清等先后在该区进行过路线地质调查。解放以后,不少单位又相继进行了较为系统的地质调查及专题研究,使本区的地质研究程度不断提高,建立了晚前寒武纪地层系统。以往,本区除叠层石外,缺少其它古生物资料及直接的同位素年龄数据,其地层划分对比相差悬殊,长期来难以统一。本文试图运用微古植物资料对该区上前寒武系的划分及对比进行探讨。
Luanshan County, Shaanxi Province to the vicinity of Chen Ear ditch Precambrian, belonging to the southern margin of North China Jinducheng - Lushan District. Stratum well exposed, simple structure, all groups, the contact between groups clearly. In the thirties, Zhao Yazeng, Huang Jiqing and other successively carried out geological survey in the area. After the liberation, quite a few units conducted successively more systematic geological investigations and special studies so as to continuously improve the geological research in this area and establish the Late Precambrian stratigraphic system. In the past, except for the strata, this area lacks other palaeontological data and direct isotope age data. The stratigraphic division and contrast have great disparities and are difficult to unify in the long term. This paper attempts to use the micropanut plant data on the area of Precambrian division and comparison.