【摘要】 本文介绍了发现于祁连山主脊——柴达木盆地北缘地区的红崖子山—带含三趾马动物群的上新世沉积——红崖子组,含 Hipparion platyodus、Chilotherium sp.(cf.xizangensis)、Palaeotragusmicrodon 等哺乳动物化石,并含属于上新世的轮藻组合.红崖子组三趾马动物群的发现表明,上新世以来,青藏高原北部上升亦达2700——3200米,当时的青藏高原与华北地区有过动物群的交流.更多还原

【Abstract】 A mammalian fauna—bearing,formation is located at Mount Hongyazlin the main range of Qilian Mountains-northern rimland of ChaidamBasin between Gansu and Qinghai Provinces,was discovered in thespring of 1983The deposits in the area of Mount Hongyazi mainly consists of Plio-cene fluvial-lacustrine origin.Its animals include the following species. Hipparion platyodusHipparion sp.Chilotherium sp.(cf.xizangensis)Paleaotragus microdonGazella sp.(cf.gaudryi)Cervidae indet.Carnivora indet.Besides above,Charaphyta from Hongyazi Formation also have someother species as follows:Nittelopsis(Tectochara)Huangi(Lu)S.WangN.megarensis S.M(?)rscheChalites papii S.M(?)rscheCroftiella zhui(S.Wang)Z.W.LiAmblyochara Subeiensis Huang et HuBased on the analysis of the above mentioned tauna and charaphy ass-emblage,it was suggested that the Hongyazi Formation can be comparedin the characteristics with Woma Formation of Guizhong Basin in Xizangand Hipparion Beds in North China.Thus,the Hongyazi Formationshould be in the middle and late Pliocene.Fromthe fact that the Hi pparionBegs in North China is 500～1000m above sea level,but the HongyaziFormation is located at 3700m a.s.l, at present,therefore,it must havebeen uplifteed about 2700～3200m since,Pliocene更多还原