摘要
本文描述了采自河南南部桐柏地区蔡家凹大理岩中的放射虫化石,共计7属8种（其中1新属2新种）, 包括 Archaeospongoprunum compactum Nakaseko et Nishimura, Yangia chinensis Feng,Shengia yini (Feng), Cenosphaera sp., Triassocampe ? sp., Pactarentinia sp., Triassomitra zhangi n. gen. etsp.和Triassomitra litangensis n. gen. et sp..该动物群形成于三叠纪早期半深海环境,这是在桐柏-大别地区首次发现海相三叠纪地层,据此推论,二叠纪至三叠纪早期,古秦岭洋贯通秦岭-大别地区,是沟通古特提斯和古太平洋的重要通道,印支运动使秦岭-大别洋盆最终封闭。
The radiolarian fauna described in this paper was collected from the Caijiawa marble (correlation with the Yianlinggou Fortnation in Qinling Group) in Tongbai region of Henan Provinoe, and includes 8 species (3 uncertain and 2 new species), 7 genera ( 1 new genus) which are Archaeospongopmnum compactum Nakaseko et Ni shimura, Yangia chinensis Feng, Shengia yini (Feng), Cenosphaera sp., Triassocampe? sp., Pactarentinia sp., Triassomitra zhangi n. gen. et sp. and Triassomitra litangensis n. gen. et sp.. It lived in Continental slope environment of subabyss during the early Triassic. According to the marine Triassic strata found here for the first time in Tongbai region,it is thought that Qinling paleo-ocean during the Permian and Early Triassic ran through entire Qinling-Dabie region, was an important passage way between paleo-Tethys and paleo-Pacific, and was finally closed by Indosinian movement .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1994年第6期787-794,共8页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金49302020项目
国家教委博士导师基金资助
关键词
三叠纪
放射虫
构造演化
动物群
地层
Triassic, Radiolaria, Qinling-Dabie orogenic belt, tectonic evolution Qinling paleo-ocean, Indosinian movement , Tongbai region.
