| 庄志贤,陶泳昌,周安乐.贵州猫场超大型铝土矿床成因浅析[J].贵州地质,2016,33(4):272-277,283 |
| 贵州猫场超大型铝土矿床成因浅析 |
| Genesis Discussion of Maochang Super-large Bauxite Deposit |
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| 中文关键词: 铝土矿 古喀斯特 含矿岩系 沉积旋回 风化溶蚀淋滤作用 贵州 |
| 英文关键词:Bauxite deposit Ancient karst Ore-bearing rock series Sedimentary cycle Weathering corrosion and leaching progress |
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| 中文摘要: |
| 猫场铝土矿床位于大威岭背斜北东端猫场穹窿背斜。由于寒武系碳酸盐岩古喀斯特侵蚀面，经长期风化溶蚀淋滤作用，在古喀斯特正地形上先形成粘土层，粘土层进一步风化溶蚀经脱硅、脱铁形成三水铝石的矿源层，而古喀斯特负地形则为铝土矿的沉积提供了充足的场所。本文通过对含矿岩系的特征分析，结合沉积相与古地理环境等研究，揭示了猫场铝土矿床的形成严格受大地构造和古喀斯特地形的控制。 |
| 英文摘要: |
| Maochang bauxite deposit situated in Maochang dome anticline of northeast Daweiling anticline. Because the carbonate rock ancient karst erosion surface of Cambrian suffered long time weathering corrosion and leaching progress, claypan formed on the ancient karst positive landform, then the claypan formed ore source bed of gibbsite by further weathering corrosion desilication and deferrization, the negative landform supported enough space for bauxite sediment. By analysis the characteristics of ore-bearing rock series, with the study of sedimentary facies and paleographic environment, improved that the formation of Maochang bauxite deposit was controlled strictly by geotectonics and ancient karst topography. |
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