摘要
应用矿物资料统计分析方法研究海洋沉积物的来源、矿物组合区和沉积环境特点在国内外已有一些报导。在石臼所深水港选址期间,我们曾对鲁南近岸带的重矿物来源、扩散型式和分布特征作过初步研究。本文对该区的81个样品(站位)中的24种重矿物资料进行了Q型统计分析。此分析以Q因子为基础,兼用聚类法和多端元相关法。文中并根据统计分析结果给出的分区图示,对重矿物来源和海岸动态作了分析研究。
The heavy minerals of 81 nearshore sediment samples collected from the southern Shandong province were statistically analysed by means of the cluster and multiple end-member methods.The sources and dispersion of the heavy minerals were also discussed on the basis of the dendrograms and the matrix of the cosine-theta coefficient.1.The nearshore sediments of the southern Shandong can be divided into two heavy mineral assemblage provinces:northern hornblende province and southern epidote province.2.The provenances of the heavy minerals are various,mainly from the Liangcheng-Baima,Futuan,Jufeng and Xiuzhen rivers.Those from the Longwang River and the Shijiusuo cliff can hardly have any effect on the components of the bottom sediment owing to their insignificant quantity.3.Longshore sediments are generally transported toward southwest.Sediments from the Liangcheng-Baima River may reach the Futuan River mouth.Sands from the Futuan River are noticeably transported southward.Whereas the Xiuzhen River sediments may be dispersed to the Lanshantou region.4.The concentration of the magmetite in the southern nearshore zone is controlled by the coastal processes and the material sources.Abundant materials from the intrusive rocks,the Futuan River sediments and strongly sorting process occurring on the beach are foundational factors affecting the concentration of the magnetite.
作者
林振宏
范守志
吕亚男
Lin Zhenhong;Fan Shouzhi;Lü Yanan(Shandong College of Oceanology;Institute of Oceanology,Academia Sinica)
出处
《海洋与湖沼》
1983年第5期447-453,共7页
Oceanologia Et Limnologia Sinica
