| The Behaviour of Rare—Earth Elements（REE） During Weathering of Granites in Southern Guangxi,China |
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| 引用本文： | 郑作平,林传仙.The Behaviour of Rare—Earth Elements（REE） During Weathering of Granites in Southern Guangxi,China[J].中国地球化学学报,1996,15(4):344-352. |
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| 作者姓名： | 郑作平 林传仙 |
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| 作者单位： | [1]GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Guangzhou,510640 [2]GuangzhouInstituteofGeoche,ChineseAcademyofSciences,Guangzhou,510640 |
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| 摘 要： | The behaviour of the rare-earth elements(REE)during the weathering of granites was studied in southern Guangxi,China.Based on the study of the weathering profiles,the soil,weathered and sub-weatereb zones are identified with different REE geochemical behaviours throug the weathering profiles of granite.The Ce anomalies of the weathering profiles cover a large range of values with most falling between 1.02 and 1.43in the soil zone and 0.16and 0.40in the weathered and sub-weathered zones.Light rare-earth elements(LREE) and heavy rare-earth elements(HREE)are enriched to varying degree in the weathering profiles as compared to host granites.In the soil zone,more HREEs are leached than LREEs,and HREEs are more enriched than LREE in the weathered and sub-weathered zones.It is considered that infiltration and adsorption on clays are two processes controlling the enrichment and formation of REE deposits in the weathering profiles of granite.
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| 关 键 词： | 稀土元素 地球化学 花岗岩 广西 风化作用 |
The behaviour of rare-earth elements (REE) during weathering of granites in southern Guangxi,China |
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| Zheng Zuoping,Lin Chuanxian.The behaviour of rare-earth elements (REE) during weathering of granites in southern Guangxi,China[J].Chinese Journal of Geochemistry,1996,15(4):344-352. |
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| Authors: | Zheng Zuoping Lin Chuanxian |
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| Institution: | (1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou |
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| Abstract: | The behaviour of the rare-earth elements (REE) during the weathering of granites was studied in southern Guangxi, China. Based
on the study of the weathering profiles, the soil, weathered and sub-weathered zones are identified with different REE geochemical
behaviours through the weathering profiles of granite. The Ce anomalies of the weathering profiles cover a large range of
values with most falling between 1.02 and 1.43 in the soil zone and 0.16 and 0.40 in the weathered and sub-weathered zones.
Light rare-earth elements (LREE) and heavy rare-earth elements (HREE) are enriched to varying degree in the weathering profiles
as compared to host granites. In the soil zone, more HREEs are leached than LREEs, and HREEs are more enriched than LREE in
the weathered and sub-weathered zones. It is considered that infiltration and adsorption on clays are two processes controlling
the enrichment and formation of REE deposits in the weathering profiles of granite.
This project was granted by the National Natural Science Foundation of China. |
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| Keywords: | REE geochemical behaviour weathering granite Guangxi |
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