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海底稀土分布及其控制因素研究进展 被引量:2

Advances in Study on Distributions and Control Factors of Marine Rare Earth Elements
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摘要 稀土是不可再生的重要自然资源,在高科技、冶金、石油、农业等领域广泛应用,因此对稀土的研究具有重要的应用价值和战略意义。本研究概述了国内外海洋环境中稀土元素研究进展,总结了稀土元素在海底沉积物、多金属结核(结壳)、热液硫化物以及海水中的来源、分布及控制因素,发现在多金属结核(结壳)及南太平洋东部、北太平洋中部和日本南鸟岛以南地区的深海泥中稀土元素比较富集,有一定开采价值;深海沉积物中的稀土元素主要受沉积物类型和海底火山活动影响,而陆缘海主要受粒度和物源影响,多金属结核(结壳)则主要受构造背景和氧化还原环境影响;对当前稀土研究中可能存在的问题进行了探讨,提出在稀土元素研究中应灵活应用新的研究手段。 Rare earth is a kind of non-renewable natural resources and has been widely used in the fields of metallurgy, petroleum, agriculture and so on. Therefore, research on rare earth is of great significance both in application and in strategy. Progresses in the researches on marine rare earth at home and abroad are outlined and the sources, distributions and control factors of the rare earth elements (REE) in marine sediments, polymetallic nodules/crusts, submarine hydrothermal sulfides and sea water are summarized. It has been found that in the polymetallic nodules/crusts and the deep-sea mud distributed in the eastern South Pacific Ocean, the central North Pacific Ocean and the area south of the Nanniao Islands of Japan the REE are more enriched and have a certain exploitation value. The REE content in deep-sea sediments is controlled mainly by the sediment types and the submarine volcanic activities, while in the epicontinental seas, is chiefly affected by the grain-size and sources of the sediments. The polymetallic nodules/crusts are mainly controlled by tectonic settings and redox environment. The problems that may possibly exist in the REE research are discussed and some new approaches are suggested for the future studies of REE.
出处 《海洋科学进展》 CAS CSCD 北大核心 2014年第2期288-300,共13页 Advances in Marine Science
基金 国家自然科学基金面上项目--中国东部陆架泥质区菌生磁铁矿的形成及环境控制因素研究(41176039) 山东省自然科学基金重点项目--黄河水沙变化及其河口地貌和沉积环境效应(ZR201DZ001)
关键词 海底稀土 海底沉积物 结核(结壳) 热液硫化物 marine REE marine sediments nodules(crusts) hydrothermal sulfides
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