Geochemistry of rare earth elements in cobalt-rich crusts from the Mid-Pacific M seamount

作     者：崔迎春 刘季花 任向文 石学法 

作者机构：Institute of Oceanology Chinese Academy of Sciences Key Lab of Marine Sedimentology and Environmental Geology of State Oceanic Administration First Institute of Oceanography Graduate University of Chinese Academy of Sciences 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2009年第27卷第1期

页      面：169-176页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(40704029 40376016) China International Science and Technology Cooperation Project (2006DFB21620) the Young People Marine Science Foundation of State Oceanic Administration (2005304) 

主　　题：rare earth elements cobalt-rich crusts Mid-Pacific ocean M seamount 

摘      要：Rare earth elements（REEs） and major elements of 25 cobalt-rich crusts obtained from different depths of Mid-Pacific M seamount were analyzed using inductively coupled plasma-atomic emission spectrometer and gravimetric *** results showed that they were hydrogenous crusts with average ∑REE content of 2084.69 μg/g and the light REE（LREE）/heavy REE（HREE） ratio of *** shale-normalized REE patterns showed positive Ce *** total content of strictly trivalent REEs increased with water *** Ce content and LREE/HREE ratios in Fe-Mn crusts above 2000 m were lower than those below 2000 *** change in REE with water depth could be explained by two processes：adsorptive scavenging by setting matters and behaviors of REE in ***, the Ce abundance took no obvious correlation with water depth reflects the constant Ce *** Ce in crusts existed mainly as Ce（IV）, implying that the oxidative-enriching process was controlled by kinetic factors.