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本文基于近年来在专题研究中的一系列新的发现,对安徽北部地区的凤台组和罗圈组的层序与特征等,做了新的概括,论证了它们的成因,即属于“陆缘裂谷山岳冰川泥石流和近海浮冰落石相建造”,探讨了其地质时代的归属等问题,进而将其置入更广阔的区域地质背景之上,从古构造和古地理的分析中,对南北方震旦系的对比问题,提出了新的方案。
Based on a series of new discoveries in thematic studies in recent years, this article makes a new summary of the sequence and characteristics of the Fengtai Formation and the Luozha Formation in the northern part of Anhui Province, and demonstrates their causes, namely, the “continental margin Rift Valley Glacial Debris Flow and Offshore Floating Rockfall Facing ”, discussing the issue of its geologic age attribution and so on, and then placing it on a broader regional geological background. From the analysis of palaeotectonics and palaeogeography, Fang Sinian comparison of the Department, put forward a new program.