吉林延吉盆地早白垩世沟鞭藻类及其它藻类  

THE DINOFLAGELLATES AND OTHER ALGAE OF THE EARLY CRETACEOUS FROM THE YANJI BASIN

作　　者：乔秀云[1] 万传彪[1] 徐衍彬[1] 焦玉国[1] 孔惠[1] 金玉东[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,大庆163712

出　　处：《微体古生物学报》2003年第3期309-317,共9页Acta Micropalaeontologica Sinica

摘　　要：本文研究吉林省延吉盆地下白垩统 2个组中沟鞭藻类及其它藻类组合。其中铜佛寺组二段是延吉盆地下白垩统产沟鞭藻最丰富的层位。 Vesperopsis cf.zhaodongensis- Vesperopsis tongfosiensis组合指示的地质时代可能为Hauterivian- Barremian期 ,代表了淡水—微咸水 (偏淡水 )的沉积环境 ,而 Filisphaeridium- Sentusidinium组合的时代属于 Barremian- Aptian早期 ,指示的水体环境为淡水—微咸水 (偏微咸水 )。文中描述了 1新种 ,对 Vesperopsisyanjiensis Mao,Wan et Qiao。The assemblages of dinoflagellates and other algae in 2 formations of the Lower Cretaceous system from the Yanji Basin, Jilin Province, was studied in this article. The most abundant dinoflagellates come from the Member 2 of the Tongfosi formations of the Lower Cretaceous, Yanji Basin. The assemblage of Vesperopsis cf. zhaodongensis Vesperopsis tongfosiensis indicats a Hauterivian Barremian age and freshwater slight salt water(leaning to fresh water) environment; the assemblage of Filisphaeridium Sentusidinium indicats an Early Barremian Aptian age and fresh water light salt water(leaning to light salt water) environment. A new species is described. Vesperopsis yanjiensis Mao,Wan et Qiao, 1999 is emended in this paper.

关 键 词：吉林 延吉盆地 沉积环境 早白垩世 沟鞭藻类 

分 类 号：Q914[天文地球—古生物学与地层学]