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地质科学  1995, Vol. Issue (2): 139-146    DOI:
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南京湖山地区下二叠统孤峰组放射虫动物群
王汝建
同济大学海洋地质与地球物理系, 上海200092
RADIOLARIAN FAUNA FROM GUFENG FORMATION(LOWER PERMIAN)IN HUSHAN AREA OF NANJING,JIANGSU PROVINCE
Wang Rujian
Department of Marine Geology and Geophysics, Tongji University, Shanghai 200092
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摘要 南京湖山地区下二叠统孤峰组含有极丰富的放射虫化石,主要由阿尔拜虫类albaillellids.球形多囊虫类sphericalpolycystine和十字多囊虫类stauraxonpolvcystine组成。文章对部分化石进行了描述,并建立1新属新种。根据放射虫在地层中的分布,提出两个组合带,即Pseudoalbaillella fusiformis-P. longtanensis带和Ruzhencevispongus uralicus带,并将这两个组合带与国内外时代大致相当的放射虫组合进行了比较,还讨论了这两个组合的时代。
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王汝建
关键词放射虫动物群   组合带   孤峰组   南京     
Abstract: Diverse, abundant and well-preserved radiolarians were discovered from the chert of middle and upper members of the Gufeng Formation(Loer Permian)in Hushan area, Naming(Jiangsu Province). Fourteen genera and twenty seven species are recognized and described. Of these, one genus(Quadrilobata)and one species(Quadrilobata ephippiomorpha)are new. These radiolarians are composed of three basic types of microfossils, namely, the albaillellids, the spherical polycystine and the stauraxon polycystine. Pseudoalbaillella fusiformis, Hegleria mammilla and Ruzhencevispongus uralicus are dominant in the Gufeng Formation. Based on the distribution pattern of the radiolarians in the Gufeng Formation, two assemblage zones, namely, the Pseudoalbaillella fusiformis-P. longtanensis Assemblage(Ass.)in the lower part and the Ruzhencevispongus uralicus Ass. in the upper part of studied Formation of Hushan, Nanjing(Jiangsu Province)have been proposed, Biostratigraphically, the first Ass. is correlated with the Pseudoalbaillella scalprata-P. fusifo rmis Ass. from Gufeng Formation in Longtan, Naming and the Pseudoalbaillella.longtanensis Ass. of Southwest Japan. The second Ass. is considered as equivalent to the Pseudoalbaillella globosa Ass. of Southwest Japan and the Ruzhencevispongus uralicus Ass. of Southern Urals, USSR. Therefore, it is considered that the two zones fall into the middle and late Maokouan stage respectively, corresponding to middle and late Guadalupian.
Key wordsRadiolarian fauna   Assemblage zone   Gufeng Formation   Nanjing(Jiangsu Province)   
收稿日期: 1993-04-26;
基金资助:同济大学创业基金
引用本文:   
王汝建. 1995, 南京湖山地区下二叠统孤峰组放射虫动物群. 地质科学, (2): 139-146.
Wang Rujian. RADIOLARIAN FAUNA FROM GUFENG FORMATION(LOWER PERMIAN)IN HUSHAN AREA OF NANJING,JIANGSU PROVINCE[J]. Chinese Journal of Geology, 1995, (2): 139-146.
 
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