| 长江口北支表层沉积物重矿物分布和磁学特征 |
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| 引用本文： | 张风艳,孟翊.长江口北支表层沉积物重矿物分布和磁学特征[J].海洋地质与第四纪地质,2011(1):31-41. |
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| 作者姓名： | 张风艳 孟翊 |
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| 作者单位： | 华东师范大学河口海岸学国家重点实验室; |
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| 基金项目： | 国家重点基础研究发展规划项目(2010CB951202); 河口海岸国家重点实验室项目(SKLEC-2009KYYW02) |
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| 摘 要： | 分析了长江口北支表层沉积物的重矿物分布,结合磁参数和粒度特征,探讨其在各沉积动力分区的分布特点及控制因素.研究表明:研究区重矿物以角闪石和绿帘石组合为主,其次为云母类和磁铁矿等.其中浅滩和潮流脊处水动力较强,沉积物颗粒较粗,重矿物以片状矿物-稳定矿物组合占优势,磁性参数相对较低;汉道和潮汐通道处水动力相对较弱,沉积物以...
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| 关 键 词： | 重矿物组合 磁性参数 沉积动力 长江口北支 |
HEAVY MINERAL DISTRIBUTION AND MAGNETIC CHARACTERISTICS OF SURFACE SEDIMENTS IN THE NORTH BRANCH OF THE CHANGJIANG RIVER |
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| ZHANG Fengyan,MENG Yi.HEAVY MINERAL DISTRIBUTION AND MAGNETIC CHARACTERISTICS OF SURFACE SEDIMENTS IN THE NORTH BRANCH OF THE CHANGJIANG RIVER[J].Marine Geology & Quaternary Geology,2011(1):31-41. |
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| Authors: | ZHANG Fengyan MENG Yi |
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| Institution: | ZHANG Fengyan,MENG Yi (State Key Laboratory of Estuary and Coastal Research,East China Normal University,Shanghai 200062,China) |
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| Abstract: | Based on data from the surface sediments obtained from the north branch of the Changjiang River,this paper deals with the distribution of heavy minerals,the spatial variations of sediment magnetic properties and their controlling factors.Results indicate that hornblende and epidote dominate in heavy minerals in the research area,followed by mica and magnetite,but mineral assemblages vary in different sedimentary dynamic zones.The mica-stable mineral assemblage mainly occurs in sandspits and tidal sands,wher... |
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| Keywords: | the north branch of the Changjiang River heavy minerals assemblage magnetic parameters variation sediment dynamic zone |
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