应用稀土元素示踪森林沼泽区表生介质不同粒级物质来源  

SOURCE TRCKING OF SECONDARY SUBSTANCES OF DIFFERENT GRAIN SIZES ON FOREST-SWAMP AREAS BY REE TRACING

作　　者：杨少平[1] 孙忠军[1] 孔牧[1] 喻劲松[1] 刘华忠[1] 王会峰[2] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [2]陕西省地质调查院,陕西西安71000

出　　处：《物探化探计算技术》2007年第S1期180-183,6,共5页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国地质调查局科研项目资助(2003201300002)

摘　　要：稀土元素广泛地应用于研究不同地质体的同源性判断方面。通过小西林和绰尔水系沉积物和不同层位土壤中稀土元素地球化学特征研究,发现不同粒级(+80目和-80目)的泥炭均具有"Ce亏损型"配分模式,土壤残积层和坡积层的配分模式基本上相同,表明它们来自同一类母体;腐殖层土壤和水系沉积物细粒级(-60目)的配分模式与泥炭基本相同,表明腐殖层土壤是泥炭的重要供给源;水系沉积物细粒级(-60目)部分则主要来自泥炭。REE tracing has been widely used to the co-origin judgment of geological bodies. A study on geochemical characteristics of REE in stream sediments and soils of different layers in the Xiaoxilin and Chao er areas has been made. It is shown that the peat of both meshes +80 and-80 appears as in the partition pattern of "Ce-depletion", and the similar pattern could be found in residual soil and clinosol, indicating they are from the same parent. While the partition pattern of the humic soil and the stream sedim...

关 键 词：森林沼泽区 表生介质 稀土元素 物源 示踪 

分 类 号：P632[天文地球—地质矿产勘探]