太平洋中部锰结核的稀土元素

被引:5
作者
郭世勤
孙文泓
机构
[1] 中国大洋矿产资源研究开发协会,中国地质科学院矿床地质研究所北京,北京
关键词
锰结核; 稀土元素; 太平洋;
D O I
暂无
中图分类号
学科分类号
摘要
太平洋中部CP区和CC区锰结核中含有丰富的稀土元素。CP区结核较CC区结核富含REE,海山区结核较平原丘陵区结核富含REE。结核内部REE呈带状分布。结核和沉积物的稀土分布模式相同,与海水的模式曲线为镜像关系。三价稀土元素自海水进入结核时没有产生明显分异。造成结核和沉积物中REE丰度差别的主要原因是氧化还原条件。太平洋地区洋底的氧化还原强度主要受南极底流控制。结核中含铁相是REE的主要富集场所。
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页码:135 / 147
页数:13
相关论文
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