【摘要】 <正> 序言孢子花粉分析这门学科,在我国已有好几年的历史,并且已经取得了一定的成果,但基础仍不巩固,原因之一就是未能足够重视已知(经动物化石或植物化石鉴定的)地层中的孢粉组合的研究。因此,标准未能很快建立起来,从而使地层对比发生一定的困难。1958年,笔者到山东工作时,曾在华北石油普查大队彭世福同志的帮助下了解了一些中新生代地层。笔者当时特别注意到临朐的山旺层。山旺层的植物化石早由胡先骕和钱耐(W.Chaney)教授研究过,其时代已确切无疑,为我国北部中新世上部的标准地层。更多还原

【Abstract】 The Shanwang basin of Shantung peninsula is famous for its rich in fossil flora.Theflora has been critically studied by Profs.H.H.Hu and R.Chaney.According to theiropinions,this flora is of later miocene age.The floristic composition represented by theplant macrofossils is composed mainly of woody dicotyledons.Neither coniferous norfern elements have been observed.In the present paper,the author presents the results of the sporo-pollen analysis.Fromthe rock matrix,the author has found not only some spores of Polypodiaceae,Salvinia?,but also many coniferous pollen,such as Picea,Pinus,Tsuga,Larix and other Pinaceae.Moreover,the pollen grains of herbaceous plants have been frequently found.As far as the present datum is concerned,the Shanwang flora,as represented by thespores of ferns(Polypodiaceac,Salvinia?)amount to 5.01%,while the pollen grains ofconiferae to 23.4% and those of angiosperms to 71.59%;of the latter,woody dicoty-ledons being 57.26%,herbaceous dicotyledons 0.57%,and monocotyledons 13.11%.By the evidence of presence of the fossil pollens of some subtropical elements,suchas Carya and of considerable similarity between the Shanwang flora,as indicated by the sporo-pollen complex,and the recent flora of the Yangtze valley,the author full agreeswith the opinion of Prof.Chaney,that the climate of Shanwang basin during that time waswarmer than that of the present.Age of the Shanwang flora has been considered by Hu and Chaney of later miocene.But,according to the sporo-pollen spectrum,the author suggests it more favourable tomid-late miocene rather than late miocene.The occurrence of fossil leaves of many subtro-pical elements also supports this view.更多还原