| 摘要: |
| 本文测定了中太平洋北部锰结核的主要化学元素的含量。研究表明,元素的含量分布与组成锰结核的主要矿物有关;与共生元素及渗入锰结核中的粘土矿物和其他碎屑矿物有关。文中还指出了锰结核中富Mn贫Ca,沉积物中富Ca贫Ti,而沉积物对Ca的富集又与海洋生物相关。同时说明,Mg在锰结核与沉积物之间的交换比例约为1∶1。锰结核区的海水深度、pH和Eh值的大小对锰结核的形成产生重要影响。 |
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| THE CHEMISTRY OF MAJOR ELEMENTS IN MANGANESE NODULES IN THE NORTHERN PART OF THE CENTRAL PACIFIC OCEAN |
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| Abstract: |
| The contents of major elements, which are more than one percent, such as Mn, Fe, Si, Al, Ti, Mg, Ca and Na in manganese nodules in the northern part of the Central Pacific Ocean were determined as shown in this paper. These elements can be classfied according to cluster analysis into three groups, namely manganese group (Mn, Mg, Ca), iron group (Fe, Ti), and silicon group (Si, Al, Na). The contents of two elements in same group vary in positive correlation, and in different group in negative correlation. Then study indicates that the content distributions of elements are related to main minerals composing the nodules, and then to intergrowth elements and clay minerals incorporated into nodules as well as other detrital minerals. This paper deals not only with the relations among theses elements, but also with the parameters of sedimental environment. The results show that the nodules are rich in Ma and poor in Ca, but the sediments are rich in Ca and poor in Ti, Ca in sediments is concerned in marine organisms; and that the ratio of Mg exchange between nodules and sediments is about 1:1, an important influence on the formation of nodules results from the depth of seawater and the values of pH and Eh in the nodule region. |
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