Spore-Pollen Assemblage Characters from Tertiary Guide Group in Source of the Yellow River
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摘要: 研究了青海省玛多县扎陵湖乡哈拉山第三系贵德群剖面的孢粉化石, 分析得出其孢粉化石组合为麻黄属-拟白刺粉属-藜粉属组合.通过对该区孢粉组合特征的讨论及与国内相关孢粉组合的对比, 认为研究区贵德群的地质时代属于早第三纪渐新世中晚期.据孢粉组合特征推测研究区在这一时期为炎热干旱的气候, 植被为灌丛和草原混生类型.Abstract: The Tertiary Guide Group largely bassets in the north of the source of the Yellow River. The paper describes the spores and pollen grains collected from the Guide Group section in Halashan, Zhalinghu, Maduo County, Qinghai Province. The spore-pollen assemblage is Ephedripites-Nitrarldites-Chenopodipollis. The discussion of the spore-pollen assemblage characters and the correlation with other related assemblages of China show that this assemblage may be of middle to later Oligocene age, when the Eastern Kunlun area could be very dry and torrid, and could have been covered with grassland compounded with jungle.
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Key words:
- Guide Group /
- spore and pollen grain /
- Tertiary /
- source of the Yellow River /
- Qinghai
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