东南极格罗夫山地区晚第三纪孢粉的发现  

PLIOCENE SPOROPOLLEN IN THE GROVE MOUNTAINS, EAST ANTARCTICA

作　　者：李潇丽[1] 刘小汉[1] 方爱民[1] 琚宜太[1] 严富华[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国地震局地质研究所,北京100029

出　　处：《海洋地质与第四纪地质》2003年第1期35-39,共5页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金资助项目(40202034);中国科学院创新工程项目(KZCX2 303);国家攻关资助项目(98 927 01 06)

摘　　要：对采自东南极格罗夫山地区的7个土壤样品、2个冰碛岩样品和1个剪切泥样品进行了孢粉分析,共获孢子花粉33个种属。乔木和木本花粉总数占94.5%,灌木和草本植物花粉总数占3 2%,蕨类植物孢子总数占2 3%。乔木和木本花粉中主要的优势种属为松属(Pinus)和桦属(Petula)以及少量的栗属(Quercus)、胡桃属(Juglans)、椴属(Tilia)和蒿属(Artemisia)等。根据孢粉组合及形态和颜色特征,认为其时代可能为上新世。说明晚第三纪以来,东南极格罗夫山地区可能有一个暖期存在。The spores and pollen grains from 33 species dealt with in the paper were obtained from sporopollen analyses of seven soil samples, two glacial tillites and one glacial mud sample which were collected from Grove Mountains, East Antarctica. In this sporopollen group, arbor pollen grains are dominant, amounting to 945% of the total, shrub and herbage pollen grains amount to 32%, and pteridophyta spores to 23%. In arbor pollen grains, the dominant species are Pinus and Betula, with a small amount of Quercus, Juglans, Tilia and Artemisia etc. According to the shape and colour, the sporopollen group likely belongs to Neogene or Pliocene in age. This indicates that there used to be a warm period during the Neogene in the Grove Mountains, East Antarctica.

关 键 词：格罗夫山 南极 晚第三纪 孢粉 乔木 灌木 形态 

分 类 号：Q914.81[天文地球—古生物学与地层学] P534.61[生物学—古生物学]