| 河南桐柏地区三叠纪早期放射虫动物群及其地质意义 |
| |
| 引用本文： | 冯庆来,杜远生,张宗恒,曾宪友.河南桐柏地区三叠纪早期放射虫动物群及其地质意义[J].地球科学,1994,3(6). |
| |
| 作者姓名： | 冯庆来 杜远生 张宗恒 曾宪友 |
| |
| 作者单位： | 中国地质大学地质系 武汉430074(冯庆来，杜远生)，河南省地矿厅第三地调队 信阳464000(张宗恒，曾宪友) |
| |
| 基金项目： | 国家自然科学基金49302020项目，国家教委博士导师基金资助 |
| |
| 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。
|
| 关 键 词： | 三叠纪 放射虫 秦岭-大别造山带 古秦岭洋 构造演化 印支运动 桐柏地区 |
Early Triassic Radiolarian Fauna of Tongbai Region in Henan and Its Geologie Significance |
| |
| Feng Qinglai,Du Yuansheng.Early Triassic Radiolarian Fauna of Tongbai Region in Henan and Its Geologie Significance[J].Earth Science-Journal of China University of Geosciences,1994,3(6). |
| |
| Authors: | Feng Qinglai Du Yuansheng |
| |
| Abstract: | 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 . |
| |
| Keywords: | Triassic Radiolaria Qinling-Dabie orogenic belt tectonic evolution Qinling paleo-ocean Indosinian movement Tongbai region |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
|
