小兴安岭东南部晚二叠世地层新认识A NEW OPINION ON LATE PERMIAN STRATA IN SOUTH EAST XIAOXINGANLING
金建华,杜小弟
Jin Jianhua (Zhongshan University;Guangzhou)Du Xiaodi (Changchun University of Earth Sciences);
摘要(Abstract):
黄本宏将小兴安岭东南部晚二叠世地层划分为早期的三角山组和晚期的红山组。笔者认为它们属异地同时沉积,时代为晚二叠世。三角山组命名较晚,建议取消,保留红山组名,代表本区晚二叠世陆相碎屑沉积,而原三角山组上段的火山碎屑沉积仍归五道岭组。此外,在红山组中首次发现了数层煤线,这为在本区寻找晚二叠世可采煤层提供了线索。
Based on analysing the petrological characteristics and fossil plants in Hongshan Formation andlower part of Sanjiaoshan Formation,south east Xiaoxinganling,the authors concluded that Hongshan Forma-tion and lower part of Sanjiaoshan Formation are synchronous deposition in two different areas,belong to LatePermian. Because of Sanjiaoshan Formation named later,the authors propose that Sanjiaoshan Formation must becancelled and only use the name of Hongshan Formation to represent late Permian terrigenous deposits.Pyro-clastic rock of the upper part of the former Sanjiaoshan Formation is incorporated into Wudaoling Formation.Itmust be emphasized that several coal seams are discovered in researched area,which is a important clue to seeklate Permian practical coal beds in south east Xiaoxinganling.
关键词(KeyWords):
红山组;三角山组;五道岭组;晚二叠世;植物群研究;小兴安岭东南
Hongshan Formation;Sanjiaoshan Formation;Wudaoling Formation;Late Permian Epoch;floral studies;south east Xiaoxinganling
基金项目(Foundation):
作者(Authors):
金建华,杜小弟
Jin Jianhua (Zhongshan University;Guangzhou)Du Xiaodi (Changchun University of Earth Sciences);
参考文献(References):
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- 红山组
- 三角山组
- 五道岭组
- 晚二叠世
- 植物群研究
- 小兴安岭东南
Hongshan Formation - Sanjiaoshan Formation
- Wudaoling Formation
- Late Permian Epoch
- floral studies
- south east Xiaoxinganling