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中国拥有众多白垩纪陆相沉积湖盆,尤其是东北地区发育了以松辽盆地为主的大型白垩纪沉积盆地。该盆地是亚洲古陆上最大的白垩纪湖盆之一,是我国陆相白垩系发育最完整的地区。连续沉积的以富有机碳黑色页岩为主的砂泥碎屑岩建造,使得该区成为建立我国陆相地层格架的理想地区。对松辽盆地白垩系的研究围绕油田勘探与开发的需要已经做得较为深入,对盆地中陆相古生物的研究也已达到较高水平,基本完成了介形类和孢粉化石的系统描述;但对于建立可与全球标准对比的生物—年代地层格架,各界仍存在不同的认识。主要利用松科1井南孔连续岩心资料,分析底栖轮藻和浮游沟鞭藻等
China has many Cretaceous continental sedimentary basins, especially the large Cretaceous sedimentary basins dominated by Songliao Basin in northeast China. The basin is one of the largest Cretaceous lake basins on the ancient continent of Asia and is the most developed region of continental Cretaceous in China. The continuous deposition of sands and clastic rocks dominated by organic-carbon black shales makes this area an ideal area for the establishment of continental stratigraphic frameworks in China. The study of the Cretaceous in the Songliao Basin has made a deep research on the exploration and development of oil fields. The study on the paleo-paleontology in the basin has also reached a high level, and the systematic description of the ostracods and sporopollen fossils has basically been completed. However, there is still a wide range of different understandings from all walks of life to establish a bio-geochronostratigraphy framework that can be compared with global standards. The data of continuous core of Nankong 1 well in Songke are mainly used to analyze the distribution of benthic macroalgae and planktonic dinoflagellates