| 渤海西部及沿岸地区晚更新世以来孢粉组合及地层、古地理研究 |
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| 引用本文： | 金小凤.渤海西部及沿岸地区晚更新世以来孢粉组合及地层、古地理研究[J].海洋科学,1984,8(3):16-24. |
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| 作者姓名： | 金小凤 |
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| 作者单位： | 北京石油勘探开发研究院 |
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| 摘 要： | 渤海为我国内海。有关单位曾对海区中部及海峡地区的六个柱状剖面样进行了孢粉分析,为渤海海洋孢粉研究积累了宝贵资料。为了进一步探索渤海西部及沿岸地区沉积物中孢粉的分布规律,推断沉积物的地质时代,划分、对比地层,恢复古地理和古气候,追溯海盆物质来源和运移等,本文对位于渤海西部的渤25、渤12-2和位于现代滦河三角洲上的乐五杜状剖面样进行了孢粉、藻类研究。
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THE SPORE-POLLEN ASSEMBLAGES AND THE STRATIGRAPHY AND PALAEOGEOGRAPHY IN WESTERN BOHAI SEA SINCE LATE PLEISTOCENE |
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| Abstract: | Through the study of spore-pollen and algae from three column sections, the evolution of vegetation and the variation of climate in western Bohai Sea and its coastal regions are divided into seven stages. The first four stages belong to the late Pleistocene, the rest three stages to the Holocene. At the late Pleistocene, western Bohai Sea has gone through land and sea, and vice versa. At the Dali Warm Glacial Epoch, the sea level lowered greatly because of the bitter climate, making most of the western Bohai Sea twice land areas. The present geomorphologic outline began to take shape with the rise of the sea level in Holocene. |
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