Abstract:

species of foraminifera,included in 14 genera were encountered from 39 samples of PC10 core,which were drilled in Bransfield Strait of Antarctica Peninsula during the 7th Chinese Expedition to Antarctic.They are divided into 3 assemblages as follow:1.Siliceous shell assemblage;2.Calcareous shell assemblage;3.Mixed shell assemblage. The Siliceous shell assemblage occurred in normal deep sea,with weaker water dynamic condition.The Calcareous shell assemblage was formed by turbidity flow,while the Mixed shell assemblage represented intense to weaker water dynamic condition. It changed from warm to cold to warm during the late Quaternary.