【摘要】 在福建沙县高地船山组?类及其生物地层研究的基础上,分析船山组地层碳酸盐岩的微相及沉积环境,结合对该地层?类生物化石分布特征的定量研究,探讨?类生物的演化与海平面变化之间的关系.研究表明:本区晚石炭世逍遥期海平面总体处于上升期,形成海侵层序,?类属种以小纺锤形为主,分异度小;早二叠世紫松期的海平面总体趋于稳定后缓慢下降,?类属种以壳体较大的球形或亚球形为主,分异度大;之后,海平面继续下降,?类属种又以中小纺锤形为主,分异度小,物种逐渐衰退.更多还原

【Abstract】 Based on the Chuanshan formation fusulinid fauna and biostratigraphic studies in the highlands of Sha County,Fujian province,a detailed investigation has been conducted to study the microfacies and sedimentary environment of carbonate rocks in Chuanshan formation.Combined with the quantitative research of the fusulinid fossil distribution,relationship between the evolution of fusulinid fauna and sea level change has been discussed.According to the study,the sea level of the late Carboniferous period in the region is generally on the rise,forming a sequence of invasion,and the genera of fusulinid fauna are mainly shaped by small spindles,with small differences.In the early Permian period,the sea level generally stabilized and decreased slowly,and the genera are mainly shaped by big spheroid or subspheroid,with big differences.Since then,the sea level has continued to fall,and the species have been declined by small and medium spindles with small differences.更多还原