【作者】 毕治国； 王贤方； 朱鸿； 王自强； 丁放；

【Author】 Bi Zhiguo Wang Xianfang (Regional Geological Survey Party,Bureau of Geology and Mineral Resources of Anhui Province) Zhu Hong Wang Zhiqiang Ding Fang (Wuhan College of Geology)

【机构】 安徽省地质矿产局区域地质调查队； 武汉地质学院；

【摘要】 <正>皖南地处江南古陆的东端。震旦系沿古陆两侧呈条带状较规则地展布。地层发育齐全, 分布广泛(图1),出露良好,各组岩性特征和接触关系清楚,是我国南方震旦系发育良好的重要地区之一。早在三十年代初期,李毓尧、李捷首先发现体宁蓝田地区的震旦系。 1935年李毓尧、许杰重赴休宁蓝田,测制了系统剖面,创立了“休宁砂岩”,确定了“冰碛层”的存在,并认为可以与李四光在三峡建立的震旦系剖面对比。同年丁毅也对蓝田剖面更多还原

【Abstract】 Sinian deposits with characteristic formations and distinct contact are widespread and well developed in South Anhui,where they may be divided into two series and four formations,the Xiuning and Leigongwu Formations of the Lower Sinian,and the Lantian and Piyuancun Formations of the Upper Sinian viz.A detailed description of the stratigraphy including sedimentary and the sedimentary types,the palaeoglaciation,and the migration of the apparent palaeomagnetic pole is given here.Such questions as the division and correlation of the strata,the boundary of the top and the base of the Sinian,the palaeogeography,and the origin of mineral resources are also dis- cussed,Abundant fossils including macroscopic algae such as Tyrasotaenia, Epiphyton,Gordonophyton,Kordephyton,?Bija,Chuaria and Shousienia are collected for the first time from the Upper Sinian Lantian Formation.These fossils provide the palaeontological basis for the division and correlation of the strata.更多还原