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浙闽地区早白垩世暗色岩系的孢粉组合与古气候特征
引用本文:刘友祥,胡文瑄,胡广.浙闽地区早白垩世暗色岩系的孢粉组合与古气候特征[J].高校地质学报,2014,20(4):590.
作者姓名:刘友祥  胡文瑄  胡广
作者单位:南京大学地球科学与工程学院,南京,210023
基金项目:中石化海相油气前瞻性课题“中国东南部油气成藏条件与远景分析”
摘    要:通过定量分析浙闽地区三个典型剖面(浙江象山石浦、松阳枊城下湖源及福建武夷山崇安) 的暗色岩系沉积期的孢
粉化石,研究了早白垩纪浙闽地区的古气侯特征。研究表明,石浦地区孢粉中Pinuspollenites,Podocarpidites,Celtispollenites
和Ulmuspollenites 含量最多,下湖源地区孢粉以Pinuspollenites,Gleicheiniiidites,Classopollis 和Deltoidospora 为主,崇安地区
孢粉以Classopollis,Tracheid,Pinuspollenites 和Podocarpidites 为主。孢粉化石组合表明,石浦地区为亚热带潮湿气候,气候
变化较小;下湖源地区为亚热带潮湿-半潮湿气候,并出现一次变热变干事件;崇安地区为亚热带半干旱气候,但发生过
数次干旱与潮湿交替的气候波动。总体而言,早白垩纪研究区属于亚热带气候,具有潮湿、干旱交替变化、自东而西越来
越干旱的特征。

关 键 词:早白垩世  孢粉化石  古气候  暗色岩系  浙闽地区

Spores and Pollen Assemblages and Their Paleo-climate Implication from the Early Cretaceous Dark Mudstone in Zhejiang and Fujian Provinces
Liu Youxiang,Hu Wenxuan,Hu Guang.Spores and Pollen Assemblages and Their Paleo-climate Implication from the Early Cretaceous Dark Mudstone in Zhejiang and Fujian Provinces[J].Geological Journal of China Universities,2014,20(4):590.
Authors:Liu Youxiang  Hu Wenxuan  Hu Guang
Abstract:By quantitative analysis of spores and pollen from early Cretaceous dark mudstones from three typical sections in Zhejiang and Fujian provinces, paleoclimate features of this area were obtained. Primary analysis of fossil spores and pollen shows that Pinuspollenites, Podocarpidites, Celtispollenites, Ulmuspollenites are characterized in Shipu section, Pinuspollenites, Gleicheiniiidites, Classopollis, Deltoidospora in Xiahuyuan section, Classopollis, Tracheid, Pinuspollenites, Podocarpidites in Chong'an section. Quantitative analysis of fossil spores and pollen shows that there has been a humid subtropical climate with less climatic fluctuation in Shipu, a humid-half humid subtropical climate with a short term of hot and dry climate in Xiahuyuan, half dry subtropical climate with a few times of undulations between half-arid and half-humid climate in Chong'·an. In conclusion, this study infers a subtropical paleoclimate with several undulations between half-arid and half-humid and it'·s more and more drought from east to west.
Keywords:Early Cretaceous  fossil spores and pollen  paleoclimate  dark mudstone  Zhejiang and Fujian provinces
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