| 冀中坳陷饶阳凹陷中北部古近纪沙河街组古生态分析 |
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| 引用本文： | 袭著纲,国景星,赵晓颖.冀中坳陷饶阳凹陷中北部古近纪沙河街组古生态分析[J].地球科学与环境学报,2011,33(4):358-363. |
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| 作者姓名： | 袭著纲 国景星 赵晓颖 |
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| 作者单位： | 1. 中国石油大学地球科学与技术学院,山东青岛,266555
2. 安徽科技学院外国语学院,安徽凤阳,233100 |
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| 基金项目： | 中国石油天然气集团公司华北油田公司科技攻关项目(HBYT-YJY-2008-JS) |
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| 摘 要： | 基于对冀中坳陷饶阳凹陷中北部42口井孢粉化石的鉴定,讨论了该区沙河街组孢粉植物群的古生态分类,建立了一个Quercoidites-Ulmipollenites高比例组合和5个亚组合:Ephedripites-Ulmoideipites亚组合,Pinaceae-Ephedripites-Podocarpidites亚组合,Ephedripites-Pinaceae-Labitricolpites亚组合,Pinaceae-Podocarpidites亚组合和Piceaepollenites-Ephedripites-Cedripites亚组合.通过与黄骅坳陷滩海沙河街组孢粉组合对比,根据研究区各时期孢粉组合的不同特征,探讨了饶阳凹陷中北部古近纪沙河街组古生态的变化.结果表明:研究区各孢粉组合中生组分比例稳定,平均70％以上,而旱生和湿生孢粉组分比例变化细微；沙四段晚期植被类型以常绿落叶阔叶林为主,属半干旱暖温带气候；沙三段植被类型以针叶林为主,阔叶林混生,属半湿润亚热带气候；沙二段植被类型是针叶混交林,属半干旱亚热带气候；沙一段植被类型以针叶混交林为主,湿生草本植被增多,属湿润亚热带气候.
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| 关 键 词： | 古生态 古气候 孢粉组合 沙河街组 古近纪 饶阳凹陷 冀中坳陷 |
Palaeoecological Analysis of Paleogene Shahejie Formation in North Central Raoyang Sag of Central Hebei Depression |
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| XI Zhu-gang
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GUO Jing-xing
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ZHAO Xiao-ying.Palaeoecological Analysis of Paleogene Shahejie Formation in North Central Raoyang Sag of Central Hebei Depression[J].Journal of Earth Sciences and Environment,2011,33(4):358-363. |
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| Authors: | XI Zhu-gang GUO Jing-xing ZHAO Xiao-ying |
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| Institution: | XI Zhu-gang1,GUO Jing-xing1,ZHAO Xiao-ying2(1.School of Geosciences,China University of Petroleum,Qingdao 266555,Shandong,China,2.School of Foreign Languages,Anhui Science and Technology University,Fengyang 233100,Anhui,China) |
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| Abstract: | According to the identification of sporopollen fossils from the 42 wells in north central Raoyang Sag,Central Hebei Depression,the palaeoecological classification of palynoflora in Shahejie Formation was discussed;one palynological assemblage with high proportion of Quercoidites-Ulmipollenites was recognized,and five sub-assemblages were established,including Ephedripites-Ulmoideipites sub-assemblages,Pinaceae-Ephedripites-Podocarpidites sub-assemblages,Ephedripites-Pinaceae-Labitricolpites sub-assemblages,... |
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| Keywords: | palaeoecology paleoclimate palynological assemblage Shahejie Formation Paleogene Raoyang Sag Central Hebei Depression |
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