Sporopollen Assemblages and Stratigraphical Significance of Paleogene Dongying Formation in Nanpu Sag, Eastern Hebei Province

• 责任者：Zhang Yingfang (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Jiang Junwei
• 刊名：Geoscience
• 出版年：2010
• 卷期：24(2)
• 关键词：孢粉组合 ; palynological assemblage ; 渐新世 ; Oligocene ; 河北 ; Hebei Province
• 页码：p.205-213
• 图表：4 illus., 1 table, 1 plate, 32 refs.
• 分类号：1102
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

The palynological analysis of 124 samples in this paper was carried out from B13, B26, B28, G6, G7, Gl0, G20, G27 and G39 wells of Dongying Formation, Nanpu sag, eastern Hebei Province. According to the sporopollen contents, one assemblage has been proposed which was characterized by the predominance of Ulmipollenites undulosus, with high content of Pinaceae among gymnospermous pollens and abundant Ulmipollenites, Quercoidites, Juglanspollenites and Betulaceae among angiospermous pollens. The studied assemblage with high content Ulmipollenites undulosus may be assigned to Oligocene in age based on distribution of major Gymnospermous pollens, Angiospermous pollens and the first occurrence of a few Neogene pollens.