| 刘平,韩忠华,廖友常,聂坤.黔中—渝南铝土矿含矿岩系微量元素区域分布特征及物质来源探讨[J].贵州地质,2020,37(1):1-13 |
| 黔中—渝南铝土矿含矿岩系微量元素区域分布特征及物质来源探讨 |
| Regional Distribution Characteristics and Material Sources of Trace Elements in Ore-bearing Rock Series of Bauxite In Central Guizhou-Southern Chongqing |
| 投稿时间：2019-07-02 |
| DOI： |
| 中文关键词: 铝土矿 含矿岩系 微量元素 地球化学 黔中—渝南 |
| 英文关键词:Bauxite Ore bearing rock series Trace elements Geochemistry Central Guizhou-southern Chongqing |
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| 中文摘要: |
| 黔中—渝南成矿带石炭纪铝土矿含矿岩系，分别形成于修文、息烽—遵义和黔北—渝南三个沉积区，大多数铝土矿属产于碳酸盐岩侵蚀面上的、少数为产于泥页岩侵蚀面上的硬水铝石沉积型铝土矿床。修文沉积区铝土矿中Zr、RE2O3含量最多，息烽—遵义沉积区铝土矿中Ga含量最多，黔北—渝南沉积区Li含量最多，各有特色。修文沉积区铝土矿含矿岩系的母岩，是其下伏寒武系碳酸盐岩与下奥陶统页岩、灰岩、白云岩；息烽—遵义沉积区含矿岩系的母岩为下伏下奥陶统页岩、灰岩及白云岩；黔北—渝南沉积区含矿岩系的母岩，是下伏下志留统泥、页岩和上石炭统石灰岩。碳酸盐岩中Al2O3与稳定的微量元素含量甚少，要演变成大面积铝土矿，必须要配以足够的含Al2O3和微量元素较多的泥、页岩，才可能满足形成大规模铝土矿的物质需求。 |
| 英文摘要: |
| The carboniferous bauxite ore-bearing rock series in the central guizhou - south chongqing metallogenic belt were formed in xiuwen, xifeng-zunyi and qianbei —south chongqing sedimentary areas respectively.The bauxite in xiuwen sedimentary area has the highest content of Zr and RE2O3, the Ga content in xiuwen sedimentary area is the highest, and the Li content in xiuwen sedimentary area is the highest.The parent rock of the bauxite ore-bearing rock series in xiuwen sedimentary area is the lower voltaic Cambrian carbonate and lower ordovician shale, limestone and dolomite;The parent rocks of ore-bearing rock series in the xifeng-zunyi sedimentary area are lower ordovician shale, limestone and dolomite;The mother rocks of the ore-bearing rock series in the northern guizhou - southern chongqing sedimentary area are the lower silurian mud, shale and upper carboniferous limestone.The content of Al2O3 and stable trace elements in carbonate rocks is very low. In order to develop into large-area bauxite, sufficient mud and shale containing Al2O3 and trace elements are necessary to meet the material requirements of large-scale bauxite. |
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