| 渤海沿岸黄土中有孔虫化石对古风场的指示意义 |
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| 引用本文： | 李杰,旺罗,等.渤海沿岸黄土中有孔虫化石对古风场的指示意义[J].地质学报,2002,76(3):409-412. |
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| 作者姓名： | 李杰 旺罗 |
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| 作者单位： | 1. 中国地质大学,北京,100083
2. 中国科学院地质与地球物理研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金重大课题(编号49894170)资助成果。 |
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| 摘 要： | 通过对渤海沿岸末次冰期黄土中有孔虫化石的研究。发现含有主要生活在南黄海和东海水体较深的浮游有孔虫化石：Globigerina flaconensis、Globorotalia pumilio和Neogloboquadrina dutertrei，后者的含量高达6.4%，进一步对比沉积在不同地貌单元上黄土中有孔虫的丰度和浮游有孔虫化石出现的频率，发现沉积在北坡（阴坡）和南坡（阳坡）的有孔虫化石有显著的差异，北坡的有孔虫丰度和出现频次明显高于南坡，分析认为渤海沿岸的黄土不但具有西北风和东北风从渤海和北黄海搬运来的成分，还有东南风从南黄海和东海搬运带来的成分。
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| 关 键 词： | 黄土 有孔虫 季风 丰度 出现频次 古风场 渤海 |
| 修稿时间： | 4/3/2001 12:00:00 AM |
The Significance of Foraminifera from Loess along the Coast of the Bohai Sea for Palaeowind Directions |
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| LI Jie,WANG Luo,ZHAO Hu,LIU Tungsheng China University of Geosciences,Beijing, Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing.The Significance of Foraminifera from Loess along the Coast of the Bohai Sea for Palaeowind Directions[J].Acta Geologica Sinica,2002,76(3):409-412. |
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| Authors: | LI Jie WANG Luo ZHAO Hu LIU Tungsheng China University of Geosciences Beijing Institute of Geology and Geophysics Chinese Academy of Sciences Beijing |
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| Institution: | LI Jie,WANG Luo,ZHAO Hu,LIU Tungsheng China University of Geosciences,Beijing, Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing |
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| Abstract: | An investigation of foraminifera was conducted in the last glacial loess along the coast of the Bohai Sea. Some deep-water planktic foraminifera were found in the loess in the southern Yellow Sea and the East China Sea; they are: Globigerina falconensis, Globorotalia pumilio and Neogloboquadrina dutertrei. The authors anal-ysed the abundance of the foraminifera and the frequency of planktic foraminifera appearance in two different loess sections, and available data indicate that the abundances and frequencies of fossils have significant differ-ences. The abundance and frequency of the fossils from the section distributed on the northern hillside are high-er than those of the fossils from the section distributed on the southern hillside. The authors therefore interpret that the Aeolian dust was carried not only by the northwesterly and northeasterly monsoons from the Bohai Sea but also by the southeasterly monsoon from the southern Yellow Sea and the East China Sea during the last glacial stage. |
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| Keywords: | loess f oraminifera southeasterly monsoon |
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