| 南极布兰斯菲尔德海峡晚第四纪有孔虫埋藏群特征及其环境初探 |
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| 引用本文： | 陈超云.南极布兰斯菲尔德海峡晚第四纪有孔虫埋藏群特征及其环境初探[J].极地研究,1996,8(3):16-22. |
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| 作者姓名： | 陈超云 |
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| 作者单位： | 地质矿产部广州海洋地质调查局第二海洋地质调查大队 |
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| 基金项目： | 南极“八五”科技攻关课题资助 |
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| 摘 要： | 分析了采自南极布兰斯菲尔德海峡海槽中ＰＣ１０孔（７５３ｃｍ长）的３９个样品，共鉴定有孔虫１４属２１种。有孔虫埋藏可分为硅质壳、钙质壳和混合壳组合。硅质壳组合代表正常的深海沉积环境，反映了相对弱的海底水动力条件；钙质壳组合是浊流沉积的产物，反映了很强的海底水动力条件；混合壳组合则代表趋于正常的深海沉积环境，反映了由强渐弱的海底水动力条件。晚第四纪以来，本区经历了暖－冷－暖的气候变化过程。
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| 关 键 词： | 南极 布兰斯菲尔德海峡 晚第四纪 有孔虫 沉积环境 |
PRELIMINARY STUDY ON LATE QUATERNARY FORAMINIFERAL ASSEMBLAGE AND ITS SIGNIFICANCE IN ENVIRONMENT FROM THE BRANSFIELD STRAIT,WEST ANTARCTICA |
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| Chen Chaoyun.PRELIMINARY STUDY ON LATE QUATERNARY FORAMINIFERAL ASSEMBLAGE AND ITS SIGNIFICANCE IN ENVIRONMENT FROM THE BRANSFIELD STRAIT,WEST ANTARCTICA[J].Chinese Journal of Polar Research,1996,8(3):16-22. |
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| Authors: | Chen Chaoyun |
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| Abstract: | species of foraminifera,included in 14 genera were encountered from 39 samples of PC10 core,which were drilled in Bransfield Strait of Antarctica Peninsula during the 7th Chinese Expedition to Antarctic.They are divided into 3 assemblages as follow:1.Siliceous shell assemblage;2.Calcareous shell assemblage;3.Mixed shell assemblage. The Siliceous shell assemblage occurred in normal deep sea,with weaker water dynamic condition.The Calcareous shell assemblage was formed by turbidity flow,while the Mixed shell assemblage represented intense to weaker water dynamic condition. It changed from warm to cold to warm during the late Quaternary. |
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| Keywords: | s Antarctica Bransfield Strait late Quaternary foraminifera sedimentary environment |
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