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对2007年采自渤海黄河口和莱州湾内250个表层沉积物进行了重矿物研究。结果表明,黄河口和莱州湾重矿物含量很低,平均为1.51%,优势重矿物组合为云母-普通角闪石-绿帘石,其中白云母含量高于黑云母。重矿物分布和组合分区表明沉积物的物质来源主要为黄河口输入物质,莱州湾西南部河流输入物质及山东半岛西部岛屿冲刷产物为次要物质来源;重矿物特别是云母类可作为沉积物输送和扩散的指标,综合其他矿物分布特征得出,黄河入海沉积物的扩散趋势在南北向以北向为主要的输送方向,黄河口物质具有向东扩散的趋势。
A heavy mineral study was conducted on 250 surface sediments collected from the Huanghekou and Laizhou Bay in 2007. The results show that the heavy minerals in the Yellow River Estuary and Laizhou Bay are very low, with an average of 1.51%. The dominant heavy minerals are mica - common amphibole - epidote, in which the content of muscovite is higher than that of biotite. The distribution of heavy minerals and combined zonation indicate that the sediment sources are mainly from the Yellow River Estuary input materials, river input materials from the southwest of Laizhou Bay and scouring products from the islands in the western part of Shandong Peninsula. Secondary minerals, especially mica, can be transported as sediments According to the distribution characteristics of other minerals, the sediment diffusion of the Yellow River into the sea is mainly in the north and south direction, and the material in the Yellow River estuary tends to spread eastward.