生物作用在二氧化硅聚集沉淀过程中的意义--以皖南浙西的硅岩为例

在皖南浙西分布着一条近北东向的上震旦统（皮园村组）-下寒武统（荷塘组）在硅岩条带，作者通过野外、室内的研究，对岩石的结构、构造、矿物成分各个方面进行了系统的研究，找到了放射虫壳体结构，证实了生物作用对硅岩聚集沉淀的重要意义，主元素及有机碳的分析也显示了生物作用的痕迹。

The Influence of Biogenic Procession on the Accumulation and Precipiation of Silica--An example from South of Anhui and West of Zhejiang

In the South of Anhui and West of Zhejiang,there is a zone of upper Sinian and lower Cambrian siliceous rocks which strech strch praximately NE.After field trip and laboratory studies,We understood all aspects of thier texture and structure and mineral composition and found shell of radiolarian.It is proved that biogenic procession plays an important role in the fomation of cherts of cherts and the analysis of major elements shows it clearly.