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据1985年福建海岸带调查资料,对该区表层沉积物中Mno、Fe_2O_3、MgO、Al_2O_3、CaO、TiO_2的地球化学特征进行研究,结果表明:除CaO 外,其他氧化物在主要港湾中的平均含量分布呈北高南低的特征。Fe_2O_3、MgO、Al_2O_3、TiO_2含量与沉积物粒径相关性好,表明了沉积物类型制约着这几种氧化物的含量分布。Fe_2O_3与MgO、Al_2O_3,TiO_2与MgO、Al_2O_3相关性好,体现了在沉积过程中这些物质存在着伴生关系。本区活性Mn 占总Mn 量78.7%,而活性Al 和Ti 只分别占各自总量的10.3%和11.8%。三沙湾和湄洲湾沉积物中的Mn、Fe、Mg、Ti 相对于Al 有所富集。
The geochemical characteristics of Mno, Fe_2O_3, MgO, Al_2O_3, CaO and TiO_2 in the surface sediments of this area were studied according to the 1985 survey data of coastal zone of Fujian. The results showed that the average of other oxides except CaO in the main harbors The content distribution is characterized by high north to south. The correlations between Fe 2 O 3, MgO, Al 2 O 3 and TiO 2 content and sediment particle size indicate that the sediment types restrict the content distribution of these oxides. The correlation between Fe_2O_3 and MgO, Al_2O_3, TiO_2 and MgO, Al_2O_3 shows that there is an accompanying relationship between these materials in the deposition process. The active Mn in this zone accounted for 78.7% of the total Mn, while the active Al and Ti accounted for only 10.3% and 11.8% of their respective total. Mn, Fe, Mg and Ti in the sediments of Sansha Bay and Meizhou Bay are enriched relative to Al.