摘要
湘,桂两省栖霞组中的生物化石常以一定的组合类型出现,各种生物化石组合的形成都受到各种环境因素控制,因此它们具有指相意义。多种组合的存在证明了栖霞期沉积环境的多样性。对化石组合的描述和古生态分析作出其沉积环境的推论,研究这些化石组合的时空分布规律则得出该地区岩相古地理概貌。图8,参7。
Seven typical fossil associations have been found frequently in Lower Permian Qixia Formation in Hunan and Guangxi. They are: Skolithos association, Oncolithes association, Welkengia—Orthotetina association, Lophophyllidium—Tyloplecta association, Wentzellophyllum—Fistulipora association, Fenstella—Waagenites association and Zoophycos association. Each of them indicates the ecological factors of the environments, in which they formed. This paper describes the organic compositions and ecological character of these associations and discusses their significance in environmental analysis. According to the synecological analysis of these associations, some palaeogeographic inferences of Hunan and Guangxi in Lower Permian Qixia Stage have been drawed. 8figs., 7refs.
出处
《湘潭矿业学院学报》
1992年第1期21-30,共10页
Journal of Xiangtan Mining Institute
关键词
古生态学
沉积相
群体
二叠世
Qixia Formation
fossil association ecological facters
facies and paleogcography
