福建省明溪组早更新世孢粉组合特征

THE SPORO-POILEN ASSEMBLAGES OF THE LOWER PLEISTOCENE MINGQI FORMATION IN MINGQI COUNTY,FUJIAN

摘要: 本文根据明溪组地层层序,所含孢粉类型和组合特征,以及古植物、同位素地质年龄、区域对比等方面资料的系统分析,确认明溪组的时代属于更新世沉积。

Abstract: The paper discusses the fossil spores and pollen obtained in the sedimen- tary layers overlying the basalt of the Mingqi Formation,Mingqi County,Fujian province.According to the distribution of fossil spores and pollen at vertical section of a drill hole,five assemblages are distinguished:Ⅰ.Fagus+Cycloba- lanopsis;Ⅱ.Cyclobalanopsis+Castanopsis-Pinus;Ⅲ.Fagus-Pinus;Ⅳ.Fagus +Cyclobalanopsis+Castanopsis-Taxodiaceae;Ⅴ.Cyclobalanopsis+Castanopsis+ Altingia,which may be lower Pleistocene in age. The palaeoclimatologg and palaeobotan at that time are also discussed in this paper.