陕西蓝田锡水洞哺乳动物群的意义

The Significance of the Mammalian Fauna of Xishui Cave,Lanuan,Shaanxi Province

在分析了锡水洞化石哺乳动物群的性质及其所反映的古气候环境后，通过对该时期古人类分布及活动的推断，确定出该动物群的时代为中更新世，进而推算出了第四纪中期以来秦岭大约抬升了１１０ｍ。

Xishui Cave,located at about 20km southeast to Lantian County town,Shaanxi Province,was discovered by associated Professor Huang Chunchang in June, 1981.A lot of study on the field ge-ology,geography and the paleocultural relics has been done by Huang eversince. About 900 specimensof mammalian fossil in association with the cultural relics have been studied and classified to 14 generaand species by the authors of this paper.This is the first time that the mammal fossils of the cave deposits in the Qinling Mountains evercollected by the scientists themselves. Many of these species,except Dicerorhinus lantianensis,one ofthe main element of Gongwangling fauna,have a long span,from the late Early Pleistocene to the Mid-dle Pleistocene,but most of them,such as Pseudaxis grayi,Ursus thibetanus,Macaca robustus,are thecommon members of Middle Pleistocene fauna. So,the geological age of Xishui cave fauna could beconsidered as the Middle Pleistocene. According to the relationships between the elevations of XishuiCave(and other caves in that area) and the terraces of Wangchuan river nearby Xishui Cave and thegeologic age of Xishui Cave deposits containing mammalian fossils,the Qinling Mountains since thatperlod have uplifted about 110m.