元谋古猿的生活环境与年代  

LIVING ENVIRONMENT AND TIME OF YUANMOU HOMINOID FAUNA

作　　者：钱方[1] 凌小惠[1] 

机构地区：[1]中国地质科学院地质力学研究所

出　　处：《成都理工学院学报》1998年第2期311-318,共8页Journal of Chengdu University of Technology

摘　　要：元谋古猿化石主要发现于云南元谋县小河村地区的小河组中。通过对小河组的沉积特征、粘土矿物分析、古植物孢粉和哺乳动物群的研究及地貌和新构造运动研究，可以认为，在元谋古猿生活时期，元谋盆地已开始断陷；盆地中河流、湖泊发育；植物群落为稀树林—草原型；气候温干，降水量年变幅大，年平均温度１０℃左右。通过对小河组磁性地层研究，得出小河组年代约为距今３．８～５．５Ｍａ，含元谋古猿化石层年代约为距今３．９～５．２Ｍａ，所以，可以说元谋古猿的年代为距今４～５Ｍａ。The fossil of Yuanmou Hominoid Fauna were mainly discovered in the Xiaohe Formation of Xiaohe Village in Yuanmou County of Yunnan. By analyzing the sedimentary characteristics of the Xiaohe Formation and the clay minerals and by studying the sporopollen of paleobotany, the mammal fauna, the land form and neotectonism, the authors consider that during the living period of the Yuanmou Hominoid Fauna, the Yuanmou Basin started to fault and sink, the rivers and lakes in the basin developed, the plant community belonged to sparse forest\|grasslands, the climate was warm and dry, the annual precipitation rate various, and the annual even temperature about 10℃ They conclude that the Xiaohe Formation was 3 8￣5 5 Ma B. P., the time of the fossil layer containing the Yuanmou Hominoid Fauna 3 9￣5 2 Ma B.P. and the time of the Yuanmou Hominoid Fauna 4￣5 Ma B.P. by studying the Xiaohe Formation magnetostratigraphy.〖WT〗

关 键 词：元谋古猿 生活环境 年代 古动物化石 早更新世 

分 类 号：Q915.663.1[天文地球—古生物学与地层学] Q981.3[生物学—古生物学]