The first finding of superhigh concentration of REE-rich bed in carbonate rock weathering crusts and its siginificance

查看全文 作　　者：JI Hongbing, WANG Shijie, ZHOU Dequan, OUYANG Ziyuan and SUN Chengxing State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 出　　处：《Chinese Science Bulletin》索引1999年第44卷第S2期,共3页 摘　　要：THE Pingba soil profile developed on the bedrock Triassic dolomitite and morphologically located in uplandin karst terrain in Central Guizhou, China was proven to be in-situ dolomitite weathering pedogeneticproduct. Continuous sampling method was used for taking samples from man-made excavated pit fromthe Pingba profile. REE for samples was measured on ELEMENT ICP-MS in the Institute of Geochemistry, CAS. The standard reference samples GSR-6 and GSS-1,4,7 were used to monitor the precisionof REE measurement. The measurement error was less than ≤10%. For PB-T1 sample, the coefficientof variation (CV) of three analytical run precision is: La, Ce, Pr, Nd, Ho, Er≤10%; Sm, Eu, Dy,Tm≤15%; Y, Lu, Gd, Tb≤20%. 关 键 词：superhigh REE concentration WEATHERING CRUST CARBONATE rock.