【作者】 王乃文； 何希贤；

【Author】 Wang Naiwen He Xixian (Institute of Geology,Chinese Academy of Geological Sciences)

【机构】 中国地质科学院地质研究所；

【摘要】 <正>本世纪六十年代以前,在中国地质学思想中,存在过这样一个概念：燕山运动以来, 中国大陆东部长期处于隆起的大陆环境中。虽曾有人设想过沉降与海水侵入的可能,但无有力依据,未被重视。六十年代初,作者在太行山以西的运城盆地首先发现了第四纪有孔虫,同类化石随即发现于太行山东坡的蔚县(王乃文,1964),因此证实了大幅度海泛的设想。之后,在华北平原、汾渭盆地等处都广泛发现了第四纪海相层,证实了晚新生代以来中国东部发生过大规模的海水进退。关于海水进退旋迥、地层对比与化石的时代,作者更多还原

【Abstract】 Since 1977 we’ve successfully procured an interesting foraminiferal as- semblage from eight cores in the city-sector and suburb counties of Beijing. The preliminary report had been published in 1979.Somewhat later,a calca- reous nannofossil assemblage had been discovered and reported.The present paper deals with taxonomic description of foraminifera.In this fauna fiftyfour species are identified and described including three newly er- ected.They are Textularia megaloculata Copeland,Lagena williamsoni (Alcock),Nodosaria pyrula d’Orbigny,Lenticulina sp.1,Lenticulina sp.2, Lenticulina sp.3.,Pseudopolymorphina suboblonga Cusbman et Ozawa,Sigmo- morphina of.trilocularis Bagg,Oolina borealis(Williamson),O.shunyiensis sp.nov.,O.taiyanggongensissp,nov.,Fissurina pulchella(Brady),Bulimi- na marginata d’Orbigny,Trifarina angulosa(Williamson),T.granulosa sp. nov.,T.fluens(Todd),Buccella frigida(Cushman),B.inusitate Andersen, Cancris auriculus Fichtel et Moll,C.oblongus(Williamson),Elphidium frigi- dum Cushman,El.clavatum Cushman,El.gudinae(Polovoye),Elphidiella arctica (Parker et Jones),Cibicides refulgens Montfort,C.tani Iwasa et Kikuchi, Cibicides lobatulus(Walker et Jacob),C.sintikuensis Nakamnra,C.refulgens var.corticata Earland,Hyalinea baltica(Schroeter),Cassidulina laevigata d’Orbigny,C.crassa d’Orbigny,Nonion tallahattensis Bandy,N.labradoricum (Dawson),Asterononion gallowayi Loeblich et Tappan,Melonis zaandamae (Van Voorthuysen),Melonis barleeanum(Williamson),Paromalina bilateralis Loeblich et Tappan,Globigerina bulloides d’Orbigny,G.pachyderma(Ehren- berg),(d’Orbigny),G.angustiumbilicata Bolli,G.falconensis Blow,G.sp., G.atlantica Berggren,G.triloculinoides Plummet,Globigerinoides sp.,Globoro- talia(T.)acostaensis Blow,G.(T.)acostaensis subsp.pseudopima Blow,G. (T.)mayeri Cushman et Ellison subsp,nympha Jenkins,G.(T.)continuo- sa Blow,G.(T.)humerosa Takayanagi et Saito,G.(T).inflata(d’Orbigny.), Orbulina universa d’Orbigny.更多还原