Late Cretaceous Spores and Pollen Assemblages and Paleoclimate Record of the Nenjiang Formation in Nong’an, Jilin Province
详细信息
- 责任者：Jing Xia (China University of Geosciences ; Beijing 100083 ; China) ; Li Shun
- 刊名：Acta Micropalaeontologica Sinica
- 出版年：2011
- 卷期：28(2)
- 关键词：嫩江组 ; Nenjiang Formation ; 孢粉组合 ; palynological assemblage ; 古气候 ; paleoclimate ; 吉林 ; Jilin Province
- 页码：p.193-203
- 图表：3 illus., 1 plate, 1 table, 22 refs.
- 分类号：1200
- issnNo：ISSN1000-0674
- isbnNo：CN32-1189/Q
摘要
Fossil spores and pollen are abundant at the Shenjiatun section in the Nong’an area, Southeast Songliao Basin. The lithology of this section is dominated by mudstone, and referred to the Member 3 to Member 4 of Nenjiang Formation. Based on the analysis of the spores and pollen of the Shenjiatun section, the authors have identified three fossil assemblages: the Aquilapollenites-Dictyotriletes-Rugubivesiculites assemblage, the Schizaeoisporites-Classopollis-Beaupreaidites assemblage and the Rugubivesiculites-Schizaeoisporites-Quercoidites assemblage. The assemblages of Shenjiatun section can be correlated to the Campanian Stage. The quantitative analysis of spores and pollen fossils, infers a subhumid mid-subtropical paleoclimate with less climatic fluctuation.