| Geochemical Characteristics and Behaviors of Rare Earth Elements in Process of Vertisol Development |
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| 引用本文： | 黄成敏,王成善. Geochemical Characteristics and Behaviors of Rare Earth Elements in Process of Vertisol Development[J]. 中国稀土学报(英文版), 2004, 22(4): 552-557 |
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| 作者姓名： | 黄成敏 王成善 |
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| 作者单位： | [1]SchoolofEnvironmentalSciences＆Engineering,SichuanUniversity,Chengdu610065,China [2]InstituteofSedimentaryGeology,ChengduUniversityofTechnology,Chengdu610059,China |
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| 基金项目： | 国家自然科学基金，Post-Doctor Foundation of Sichuan Province |
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| 摘 要： | Vertisol developed on argillaceous rocks has its special pedogenic processes and properties, and formed some secondary no,Jules. In study area, contents of rare earth elements (REE) are significantly different in different sedimentary rocks due to varied contents of clay fraction and clay mineral composition, etc. Under the dry and hot climate, REEs were less differentiated than their parent sedimentary rocks. However, REEs in secondary nodules formed in pedogenic process display their specific behaviors. They are more concentrated in iron concretions, the content of heavy REEs increases relatively, and positive Ce-anomaly appeares. But, negative Ceanomaly was found in calcium concretions, while normal Cecontent in parent recks and vertisol.
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| 关 键 词： | 地球化学特征 稀土元素 变性土 土壤 生态学 |
Geochemical Characteristics and Behaviors of Rare Earth Elements in Process of Vertisol Development |
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| Huang Chengmin. Geochemical Characteristics and Behaviors of Rare Earth Elements in Process of Vertisol Development[J]. Journal of Rare Earths, 2004, 22(4): 552-557 |
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| Authors: | Huang Chengmin |
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| Affiliation: | Huang Chengmin ~ |
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| Abstract: | Vertisol developed on argillaceous rocks has its special pedogenic processes and properties, and formed some secondary nodules. In study area, contents of rare earth elements (REE) are significantly different in different sedimentary rocks due to varied contents of clay fraction and clay mineral composition, etc. Under the dry and hot climate, REEs were less differentiated than their parent sedimentary rocks. However, REEs in secondary nodules formed in pedogenic process display their specific behaviors. They are more concentrated in iron concretions, the content of heavy REEs increases relatively, and positive Ce-anomaly appeares. But, negative Ce-anomaly was found in calcium concretions, while normal Ce content in parent rocks and vertisol. |
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| Keywords: | ecology vertisol secondary nodules geochemistry rare earths |
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