| 成兰铁路绵竹—茂县段茂县群浅变质千枚岩风化指数研究 |
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| 引用本文：王亚暐,吴光.2018.成兰铁路绵竹—茂县段茂县群浅变质千枚岩风化指数研究[J].地球学报,39(6):749-761. |
| DOI：10.3975/cagsb.2018.081701 |
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| 基金项目:西南交通大学“成兰铁路地质勘察试验研究”项目(编号: DK170148) |
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| 中文摘要:本文以成兰铁路茂县群千枚岩为研究对象, 通过电子探针、电子显微镜和岩石地球化学分析等实验方法对其地球化学特征、微观成分结构特征以及原岩特征进行分析研究, 同时对该区风化千枚岩样及其新鲜岩的化学成分进行分析对比, 使用SPSS.22软件对各主要元素进行相关性分析, 得出其风化过程中的控制性元素后进行判别方程式拟合, 同时与前人已有的风化指标进行对比, 得出新生成的判别式更适用于本区域的风化千枚岩类判识。 |
| 中文关键词:千枚岩 地球化学 风化指数 判别方程 |
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| A Study of Phyllite Weathering Index of Silurian Maoxian Group along the Mianzhu–Maoxian Section of Chengdu–Lanzhou Railway |
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| Abstract:In this paper, based on the metamorphic phyllite of Mianzhu-Maoxian section along Chengdu–Lanzhou Railway and using electron microprobe analysis, electron microscope analysis, rock geochemical analysis and other experimental methods, the authors analyzed geochemical characteristics, microstructure characteristics and original rock characteristics. At the same time, the authors analyzed and compared the chemical compositions of weathered phyllite samples and fresh samples in this area. Using SPSS.22 software, the authors conducted correlation analysis of the main elements, obtained the control elements in the weathering process, then fitted the discriminant equations, and compared them with the weathering indexes obtained by previous researchers. It is concluded that the newly generated discriminant is more applicable to the weathering phyllite in this area. |
| keywords:phyllite geochemistry weathering index discriminant equation |
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