| 江西赣县花岗岩型红土剖面常量元素地球化学特征 |
| |
| 引用本文： | 熊平生.江西赣县花岗岩型红土剖面常量元素地球化学特征[J].高校地质学报,2015,21(3):553. |
| |
| 作者姓名： | 熊平生 |
| |
| 摘 要： | 对赣县田村花岗岩红色风化壳剖面常量元素的迁移特征和化学风化强度的研究结果表明：（1）红土常量元素组成以 SiO2、Al2O3、Fe2O3为主，三者占总量的90%以上，其中又以SiO2的含量最高，K2O、CaO、Na2O与MgO等易溶组分的含量则 相对较低；（2）红土剖面风化过程中，常量元素的地球化学行为多表现为迁移淋失，迁移程度由剖面底部向上逐渐增强， 其中CaO与Na2O平均迁移量分别为97.34%、94.94%，属于强迁移元素；MgO、K2O和SiO2平均迁移量分别为52.50%、 39.89%、22.72%，属于易迁移元素，Fe元素表现为高度富集；（3）综合分析铝铁系数、化学蚀变指数和风化淋溶系数，指 示赣县花岗岩型红土在炎热、潮湿环境下遭受了强烈的化学风化作用，风化强度顶部向下渐弱。
|
| 关 键 词： | 花岗岩型红土 化学风化强度 元素迁移 田村剖面 |
Major Elements Geochemical Characteristics of the Granite-type Laterite Profile in Gan Xian,Jiangxi Province |
| |
| XIONG Pingsheng.Major Elements Geochemical Characteristics of the Granite-type Laterite Profile in Gan Xian,Jiangxi Province[J].Geological Journal of China Universities,2015,21(3):553. |
| |
| Authors: | XIONG Pingsheng |
| |
| Abstract: | The chemical weathering intensity and element migration features of the Granite-type Laterite Profile in Tiancun, Gan xian are studied in this paper. The results indicate that: (1) The laterite is mainly composed of SiO2, Al2O3, Fe2O3, which account for over 90% of the total and the SiO2is the highest. The content of soluble constituents such as K2O, CaO, Na2O, MgO, are relatively lower. (2) Major element geochemistry behavior present the migration leaching during the process of weathering in the Granite-type Laterite Profile and the degree of migration is strengthened gradually from the bottom to the top. CaO, Na2O migration amount are 97.34%, 94.94% on average, respectively, and belong to the strong migration elements; MgO, K2O, SiO2 average migration quantity are 52.50%, 39.89% and 22.72%, respectively, belong to the easy transition element, the element characterized by high concentration was Fe. (3) We found the Granite-type Laterite Profile suffered strong chemical weathering in hot and humid environment in Gan xian and the weathering intensity became gradually weak form the top to the bottom, on the basis of the comprehensive analysis of the coefficient of aluminum and iron, chemical alteration and weathered eluvial. |
| |
| Keywords: | Granite-typeLateriteProfile chemicalweatheringintensity elementmigration Tiancunsection |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《高校地质学报》浏览原始摘要信息 |
|
点击此处可从《高校地质学报》下载全文 |
|
