Abstract: Jinggu Basin is a Mesozoic and Cenozoic depression in a parageosyncline located in Lanping and Simao areas in western Yunnan Province.It is a NNE oriented graben typefault-depression and depression basin.Neogene in the basin is divided into Shanhaogou andHuihuan Formations of Miocene and Dahongmaochun Formation of Pliocene in an as-cending order.Five spore-pollen assemblages have been recognized i.e.Monoletes-promi-nent assemblage,Coniferpollen assemblage,Clavato sporis-Liquidambarpollenites assem-blage Fraxinoipollenites-EphedripitesComposite assemblage and Pinaceae assemblage.Threeostracoda assemblages are also established i.e.Cyprinotus-Potamocypris assemblage,Herpetocyprella-Metacypris assemblage,and Leucocythere-Ilyocypris assemblage.Palaeobotany fossils called Jinggu flora are mainly yielded from the middle member ofShanhaogou Formation.

摘要： 景谷盆地位于滇西准地槽兰坪思茅中、新生代坳陷中、为一北北东向的晚第三纪地堑型断陷-坳陷盆地.上第三系自下而上划分为中新统三号沟组、回环组,上新统大红猫村组.并建立了五个孢粉组合,即单缝孢类优势组合、松柏类花粉优势组合、棒面单缝孢-枫香粉属组合、梣粉属-麻黄粉属-菊粉属组合及松科花粉组合.三个介形类化石组合,Cyprinotus-potamocypris组合、Herpetocyprella-Metacypris组合、LeucoCythere-Ilyocypris组合.古植物主要分布于三号沟组中段,称景谷植物群.

关键词: 景谷盆地, 晚第三纪, 地层对比, 地层划分, 地层剖面, 地质时代对比