北黄海南部海域表层沉积物粒度和黏土矿物特征及其物源指示  

Grain size and clay mineral characteristics of surface sediments in the southern North Yellow Sea and their source indications

作　　者：李佳林 冯永财 褚宏宪 郝连成 姜文钦 黄杏 远继东 陈玉海 LI Jialin;FENG Yongcai;CHU Hongxian;HAO Liancheng;JIANG Wenqin;HUANG Xing;YUAN Jidong;CHEN Yuhai(Yantai Center of Coastal Zone Geological Survey,China Geological Survey,Yantai 264000,China;Ministry of Natural Resources Observation and Research Station of Land-Sea Interaction Field in the Yellow River Estuary,Yantai 264000,China)

机构地区：[1]中国地质调查局烟台海岸带地质调查中心,烟台264000 [2]自然资源部黄河入海口陆海交互作用野外科学观测研究站,烟台264000

出　　处：《海洋地质前沿》2024年第11期91-102,共12页Marine Geology Frontiers

基　　金：中国地质调查局项目(DD20211553,DD20230412)。

摘　　要：通过分析北黄海南部海域138个站位的表层沉积物粒度和黏土矿物组成及其分布特征,探讨了不同区域沉积物来源及其控制因素。研究结果显示,研究区海域表层沉积物平均粒径为1.47Φ~6.56Φ,主要沉积物类型为砂质粉砂、粉砂和粉砂质砂。Pejrup三角图解显示,区内沉积动力整体较强,特别是成山头近岸的深水区。黏土矿物组成主要是伊利石(61.08%)和蒙脱石(19.78%),其次是绿泥石(10.92%)和高岭石(8.22%)。物源分析表明,北黄海南部海域表层沉积物主要来自黄河携带的陆源碎屑物质,对是否存在鸭绿江物源存疑。山东半岛沿岸流和冬季北上的黄海暖流为区内主要水动力来源,二者决定了沉积物的运移趋势,主导了研究区沉积物的空间分布。To identify the sources of sediment materials across different regions and their controlling factors,surface sediments from 138 stations in the southern region of the North Yellow Sea were sampled and the grain size and clay mineral composition and distribution characteristics were analyzed.Results show that the average particle size (Mz) of the surface sediments in the study area ranges from 1.47Φ-6.56Φ,of which sandy silt,silt-like sand,and silt were the predominant types.The Pejrup triangular diagram shows that the overall sedimentary dynamics in the area were strong,particularly in the deepwater areas off Chengshantou.The clay minerals were primarily composed of illite (61.08%) and smectite (19.78%),followed by chlorite (10.92%) and kaolinite (8.22%).The primary source of surface sediment material in the southern North Yellow Sea is continental detritus carried by the Huanghe (Yellow) River,with a potential presence of Yalu River material on the northeast edge of the area.The coastal current of Shandong Peninsula and the northward-moving warm current of Yellow Sea in winter were the main sources of hydrodynamics in the area,and they determined the trend of sediment transport and dominated the spatial distribution of sediments in the study area.

关 键 词：粒度特征 黏土矿物 北黄海南部 物源指示 山东半岛沿岸流 

分 类 号：P736.2[天文地球—海洋地质]