麦哲伦海山区维嘉平顶海山群富钴结壳伴生有用元素空间分布特征

发布时间：2018-09-08 12:10

【摘要】：本文对麦哲伦海山区维嘉平顶海山群富钴结壳样品中的伴生有用元素(REE、PGE、W、Mo、Au、Te)的空间分布特征进行了研究。研究表明:富钴结壳伴生有用元素在平面上的分布极不均匀,但多以条带状平行水深等深线分布,也有少数区域表现为斑块状分布,且不同的伴生有用元素的富集区域有所差别;REE和PGE主要在南部和西南部斜坡发育,而W、Mo则主要富集于西北部和东部斜坡,Au集中发育在东南部的海斜坡上,Te的分布呈斑块状富集于各向斜坡。随着水深增加,REE和PGE呈现出由最高含量降低后逐渐升高的变化趋势,W、Mo、Au、Te则随着水深增加含量由低升高,后略有降低,再小幅升高的变化趋势。
[Abstract]:The spatial distribution characteristics of associated useful elements (REE,PGE,W,Mo,Au,Te) in the samples of cobalt-rich crusts from the Weijia flat-top seamounts group in the Magellanic sea area have been studied in this paper. The results show that the distribution of useful elements associated with cobalt-rich crusts is very uneven on the plane, but most of them are distributed by strip parallel water depth isobars, and there are a few regions with patch distribution. The enrichment regions of different associated useful elements are different in the south and southwest slopes, and the PGE and REE are mainly developed in the south and southwest slopes. On the other hand, Wimo Mo is mainly concentrated in the northwestern and eastern slopes, and the distribution of Te on the sea slopes in the southeastern part of the region is plastered and enriched on the slopes of different directions. With the increase of water depth, REE and PGE showed a tendency of increasing gradually from the highest content to the lowest, then to a slight decrease, and then to a small increase with the increase of water depth.
【作者单位】：国土资源部海底矿产资源重点实验室;中国地质调查局广州海洋地质调查局;国家海洋局第一海洋研究所;
【基金】：中国大洋协会国际海底区域资源研究开发“十二·五”课题(编号:DY125-13-R-07) 国家自然科学基金资助项目“南海海底铁锰结核/结壳的成因和历史记录”(编号:91428207)的成果
【分类号】：P744

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