摘要
By detailed survey of lithostratigraphy,fossil assemblage and sedimentary facies,the information about lithology assemblage characteristic,fossil assemblage characteristic and facies are collected.The sedimentary cycle,sedimentary facies and lithology assemblage in the period of target area are studied.It’s known the target area is platform margin sedimentary environment,and the type,geometry and lithofacies palaeogeography are find out. It will afford beneficial information for perfecting the lithofacies palaeogeography in this period of this area.