中国二叠—三叠纪定量牙形石生物地层及相关界线的研究

本文详细讨论了各种二叠—三叠系界线定义的性质。在对牙形石和其它一些重要化石研究的基础上,以我国浙江长兴煤山剖面为标准,在电子计算机上应用回归分析的方法检验了华南地区、四川广元上寺、广元猫儿塘、广元朝天、邻水华蓥、重庆合川、重庆凉风垭、陕西西乡、喜玛拉雅地区西藏聂拉木县、色龙几条重要剖面几种拟议中的界线的等时性问题,并从生物群的演化以及地理分布等方面,阐述了合理定义(Ophiceras层之底)的理由。     

A Quantitative Conodont Biostratigraphy for Permian and Triassic and Their Mutual Boundaries in China

The character of the definition of the Permian-Triassic boundary is discussed in detail. Based on the research on conodonts and other fossils, graphic correlation is used to determine the relationship between the Shangsi, Maoertang, Chaotian, Huaying, Hechuan, Liangfenya, Xixiang, Selong and Changxing sections, in which the Changxing section is selected as a Standard Reference Section. The reason of rational definition (the base of Ophiceras bed) is expounded.