| Behaviours of REE and Other Trace Elements During Pedological Weathering-Evidence from Chemical Leaching of Loess and Palaeosol from the Luochuan Section in Central China |
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| 作者姓名： | Chen Jun Wan Hongtao |
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| 作者单位： | Chen Jun，Wan Hongtao，Department of Earth Sciences，Nanjing University，Nanjing，Jiangsuand Lu HuayuKey Lab. of Loess and Quaternary Geology，Chinese Academy of Sciences，Xi an，Shaanxi Liu Xinzhu |
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| 摘 要： | The chemical leaching method is used for a systematic analysis of distribution characteristics of acid-soluble and acid-insoluble REE and other trace elements from the Luochuan loess deposits. The study shows that the acid-insoluble phase in loess and palaeosol is a stable component of old aeolian dusts and is characteristic of the provenance; the acid-soluble phase is the unstable component in the weathering pedogenic process and reflects rock-forming features after accumulation of aeolian dusts. The acid-insoluble REE and acid-soluble Sr and Pb can be used as geochemical indicators respectively to trace the provenance characteristics and the weathering pedogenic process.
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Behaviours of REE and Other Trace Elements During Pedological Weathering-Evidence from Chemical Leaching of Loess and Palaeosol from the Luochuan Section in Central China |
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| Authors: | Chen Jun Wan Hongtao |
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| Institution: | Chen Jun,Wan Hongtao,Department of Earth Sciences,Nanjing University,Nanjing,Jiangsuand Lu HuayuKey Lab. of Loess and Quaternary Geology,Chinese Academy of Sciences,Xi an,Shaanxi Liu Xinzhu |
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| Abstract: | The chemical leaching method is used for a systematic analysis of distribution characteristics of acid-soluble and acid-insoluble REE and other trace elements from the Luochuan loess deposits. The study shows that the acid-insoluble phase in loess and palaeosol is a stable component of old aeolian dusts and is characteristic of the provenance; the acid-soluble phase is the unstable component in the weathering pedogenic process and reflects rock-forming features after accumulation of aeolian dusts. The acid-insoluble REE and acid-soluble Sr and Pb can be used as geochemical indicators respectively to trace the provenance characteristics and the weathering pedogenic process. |
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| Keywords: | chemical leaching loess and palaeosol REE geochemistry provenance characteristics weathering pedogenesis |
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