【作者】 黄柱熙；

【Author】 Huang Zhuxi (Changchun College of Geology)

【机构】 长春地质学院；

【摘要】 <正>吉林中部地区晚石炭世地层分布广泛,以盘石、双阳和永吉等地出露较好。下部为磨盘山组,主要为灰岩、含燧石结核灰岩,厚度约93Om；上部为石咀子组,以灰岩为主, 其上可相变为碎屑岩夹灰岩,厚度约1070m。本区上石炭统虽因受构造破坏,层序多不连续,但富含(蜓)和珊瑚等化石,为本区上石炭统的划分和对比提供了重要的依据。更多还原

【Abstract】 In this paper are described 13 species of Rugose corals assigned to 11 genera,among which 9 species are new.They were collected from the Mid- dle Mopanshan Formation of Early Late Carboniferous in central Jilin.Acc- ording to the characteristic of distribution and the nature of these Rugose corals,the Opiphyllum-Cystolonsdaleia assemblage may be set up.This assemblage is s characterized by its richness in fasciculate and massive co- mpound corals.It contains such species as Opiphyllum panshiensis sp.nov., Cystolonsdaleia jilinensis sp.nov.,C.panshiensis sp.nov.,C.tenuis sp.nov., Huananophyllum jizhongense sp.nov.,Lithostrotionella gudingziensis sp.nov., Ivanovia manchurica(Yabe et Hayasaka),I.elegan,sp.nov.,Actinocyathus elegantus sp.nov.,Caninia dulanensis Li et Liao,Carcinophyllum staurum sp.nov.,Siphonodendron kueichowense Chi,Taiziheophyllum sp. The fauna features and the sedimentary type of Late Carboniferous in this area are similar not only to those of the North China platform but also to those of the Tianshan—Xingan geosyncline.In this period,the earth’s crust was rather stable,the terrain remained level,the marine transgression was widespread,the carbonate sediments were mostdeveloped and life was highly prosperous in this area. The Early Late Carboniferous coral assemblage in this area has almost the same features as those of the Benxi area in Liao Ning province,in which,the population of Ivanovia manchurica look much like that of Be- nxi.This shows that marine transgression passed by here and spread sout- hward to the North China platform.Simultaneously,coral larval also passed by here and expanded southward to live and develop in the Benxi area where living conditions suit them.更多还原