2014年12月，第20卷，第4期，590-601页 December2014，Vol.20，No.4，Pp.590601
高校地质学报
Geological Journal of China Universities
浙闽地区早白垩世暗色岩系的孢粉组合与古气候特征
刘友祥，胡文瑄，胡广
南京大学地球科学与工程学院，南京210023
摘要：通过定量分析浙闽地区三个典型剖面（浙江象山石浦、松阳柳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，Celtispollenite 和Ulmuspollenites含量最多，下湖源地区孢粉以Pinuspollenites，Gleicheiniidites，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，但发生过数次干早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：早白墨世；孢粉化石；古气候；暗色岩系；浙闽地区
中图分类号：Q913.84
文献标识码：A
文章编号：10067493（2014）040590-12
SporesandPollenAssemblagesandTheirPaleo-climateImplication
fromtheEarlyCretaceousDarkMudstonein
Zhejiang and FujianProvinces Liu Youxiang, Hu Wenxuan', Hu Guang
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
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, Celtispllenites, Ulmuspollenites are characterized in Shipu section, Pinuspollenites, Gleicheiniidites, 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 elimate 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.
Key words: Early Cretaceous; fossil spores and pollen; paleoclimate; dark mudstone; Zhejiang and Fujian provinces
Corresponding author: HUWenxuan,Professor,E-mail: huwx@nju.edu.cn 收稿日期：20120502；修回日期：20120904
基金项目：中石化海相油气前瞻性课晒“中国东南部油气成缴条件与运景分析”（YPH08115）资助
作者简介：刘友祥，1986年生，男，硕士研究生，地球探测与信息技术专业；E-mail:jzliuyouxiang@163.com
*通讯作者：胡文，1959年生，教授；E-mail:huwx@nju.edu.en