| 珠江口盆地第三纪孢粉组合及其意义 |
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| 引用本文： | 雷作淇.珠江口盆地第三纪孢粉组合及其意义[J].Acta Botanica Sinica,1985(1). |
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| 作者姓名： | 雷作淇 |
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| 作者单位： | 地质矿产部南海地质调查指挥部实验室 |
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| 摘 要： | 珠江口盆地第三系十分发育。在六个层段中自上而下分为七个孢粉组合带:万山组的壳斗粉-水龙骨科组合、粤海组的藜粉-壳斗粉组合、韩江组的光极弗氏粉-罗曼娜环孔粉(比较种)组合和三瓣弗氏粉-半瓣弗氏粉组合、珠江组的栎粉-网面三沟粉组合、珠海组的苗榆粉-双束松粉组合和宝安组的杉粉-高腾粉组合。本文根据各孢粉组合带的特征,讨论其相关层段的地质时代,同时阐述了珠江口盆地第三纪时期古植物群的更替、古气候的演化和古环境的变迁。还讨论了弗氏粉的起源及其在南海海侵过程中的指相意义。
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| 关 键 词： | 珠江口盆地 第三纪 孢粉组合 古气候 |
TERTIARY SPORO-POLLEN ASSEMBLAGE OF ZHUJIANGKOU(PEARL RIVER NORTH)BASIN AND ITS STRATIGRAPHICAL SIGNIFICANCE |
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| Authors: | Lei Zuo-qi |
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| Institution: | Laboratory of South China Sea Geological Survey Headquarters Ministry of Geology and Minerals Resouces |
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| Abstract: | The Tertiary sediments in the Zhujiangkou (Pearl River North) Basin are well developed,containing very rich pollens and spores.Polynological research has been going on since 1977.According to the characters,they may be divided into seven palynological assemblages as follows: 1.Taxodiaceaepollenites-Gothanipollis assemblage (Corresponding to the Baoan Formation).The assemblage mainly consists of Alnipollenites,Quercoidites,Liquidam- barpollenites,Taxodiaceaepollenites and Pinuspollenites.In addition it contains some Polypoiisporites,Ostryoipollenites,Retitricolpites,and rare characteristic species:Utri- culariapollis tritremites,U.tetratremites,Trilobapollis leps,T.ellipticus,Operculumpol- lis operculatus,Ulmoideipites krempii,Ulmipollenites minor and Gothanipollis bassensis, referring to Early-Middle Oligocene age. |
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| Keywords: | Zhujiangkou Basin Tertiary Sporo-pollen assemblage Paleoclimate |
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