论文部分内容阅读
识别古代沉积环境,必须根据沉积剖面结构和沉积岩的成分、结构、构造,以及生物组合与古生态等方面的特征进行综合分析。对于沉积环境的反映,沉积物中有机组分比无机组分更为灵敏,因此,研究沉积物中生物组合与生态特点,是恢复古环境必须采用的方法。生物组合与古生态特点是判断沉积相的重要标志之一。在湖南,
Recognition of ancient sedimentary environment must be based on the sedimentary profile and composition of sedimentary rocks, structure, structure, and biological combinations and paleoecology and other aspects of a comprehensive analysis. As for the depositional environment, organic components in sediments are more sensitive than inorganic components. Therefore, studying the biological assemblages and ecological features in sediments is the method that must be adopted to restore paleoenvironment. Biological assemblages and palaeoclimates are one of the most important markers for determining sedimentary facies. In Hunan,