南极长城湾全新世有孔虫研究

南极长城湾９３Ｉ（６２°１７．７４′Ｓ，５８°４９．９１′Ｗ）柱样含有较丰富的有孔虫动物群，计鉴定统计５１９００个体，归属于８６种，有孔虫总丰度以柱样中段较低，浮游类含量较低（〈５％）钙质类底栖有孔虫成占优势，全柱底栖有孔虫分异度变化范围不大，底栖有孔虫五个优势种的优势度占决量的８３．３％，优势种及其组合变化显著一定的古海洋学意义，探讨了长城湾海区晚第四纪环境变迁，为南大洋晚第四纪环境与全球变化关

HOLOCENE FORAMINIFERA IN GREAT WALL BAY,ANTARCTICA

Foraminifera faunas in core NG93 I from Great Wall Bay,Antarctica,were ana-lyzed.Foraminifera faunas are relatively abundant in the sediment of core NG93 I.To-tally are found 51900 speciments from the core which belong to 86 species and mainlycalcareous benthonic foraminifera,The planktonic foraminifera only makes up a percent-age of less than 5%, The lowest abundance of foraminifera occurs in the middle of thecore. The variation of benthonic foraminiferal diversity is very small in this region,Con-tent of five dominant species reaches 83.3%,And the dominant species and their assem-blages reflect sedimentary environment and paleooceanographic features,and provide im-portant evidence for paleoclimatic changes.