高校地质学报
高校地質學報
고교지질학보
GEOLOGICAL JOURNAL OF CHINA UNIVERSITIES
2014年
4期
590-601
,共12页
早白垩世%孢粉化石%古气候%暗色岩系%浙闽地区
早白堊世%孢粉化石%古氣候%暗色巖繫%浙閩地區
조백성세%포분화석%고기후%암색암계%절민지구
Early Cretaceous%fossil spores and pollen%paleoclimate%dark mudstone%Zhejiang and Fujian provinces
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。
通過定量分析浙閩地區三箇典型剖麵（浙江象山石浦、鬆暘枊城下湖源及福建武夷山崇安）的暗色巖繫沉積期的孢粉化石，研究瞭早白堊紀浙閩地區的古氣侯特徵。研究錶明，石浦地區孢粉中Pinuspollenites，Podocarpidites，Celtispollenites和Ulmuspollenites含量最多，下湖源地區孢粉以Pinuspollenites，Gleicheiniiidites，Classopollis和Deltoidospora為主，崇安地區孢粉以Classopollis，Tracheid，Pinuspollenites和Podocarpidites為主。孢粉化石組閤錶明，石浦地區為亞熱帶潮濕氣候，氣候變化較小；下湖源地區為亞熱帶潮濕-半潮濕氣候，併齣現一次變熱變榦事件；崇安地區為亞熱帶半榦旱氣候，但髮生過數次榦旱與潮濕交替的氣候波動。總體而言，早白堊紀研究區屬于亞熱帶氣候，具有潮濕、榦旱交替變化、自東而西越來越榦旱的特徵。
통과정량분석절민지구삼개전형부면（절강상산석포、송양앙성하호원급복건무이산숭안）적암색암계침적기적포분화석，연구료조백성기절민지구적고기후특정。연구표명，석포지구포분중Pinuspollenites，Podocarpidites，Celtispollenites화Ulmuspollenites함량최다，하호원지구포분이Pinuspollenites，Gleicheiniiidites，Classopollis화Deltoidospora위주，숭안지구포분이Classopollis，Tracheid，Pinuspollenites화Podocarpidites위주。포분화석조합표명，석포지구위아열대조습기후，기후변화교소；하호원지구위아열대조습-반조습기후，병출현일차변열변간사건；숭안지구위아열대반간한기후，단발생과수차간한여조습교체적기후파동。총체이언，조백성기연구구속우아열대기후，구유조습、간한교체변화、자동이서월래월간한적특정。
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 Chongˊan 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 Chongˊan. In conclusion, this study infers a subtropical · paleoclimate with several undulations between half-arid and half-humid and itˊs more and more drought from east to west.
