| 西北地区铝土矿成矿规律概论 |
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| 引用本文： | 杨合群.西北地区铝土矿成矿规律概论[J].地质与勘探,2012,48(1):1-11. |
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| 作者姓名： | 杨合群 |
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| 作者单位： | 西安地质矿产研究所,陕西西安 |
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| 基金项目： | 国家专项(编号:12120111121034,1212011085083)资助 |
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| 摘 要： | 西北地区铝土矿均为碳酸盐岩古风化壳沉积型，其主要矿床式有：新疆阿依里式，分布于塔里木地块北缘西段，形成于晚石炭世；陕西天桥则式，分布于鄂尔多斯地块的东缘北段、南缘东段，形成于晚石炭世；甘肃大台子式，分布于鄂尔多斯地块的西缘南段，形成于早二叠世；陕西关坪式，分布于扬子地块北缘，形成于中二叠世。对比分析表明，西北已知有铝土...
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| 关 键 词： | 铝土矿 时空分布 成因类型 矿床式 成矿规律 西北地区 |
| 收稿时间： | 6/9/2011 12:00:00 AM |
| 修稿时间： | 9/6/2011 12:00:00 AM |
On Metallogenic Regularities of Bauxite Deposits in Northwest China |
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| YANG He-qun.On Metallogenic Regularities of Bauxite Deposits in Northwest China[J].Geology and Prospecting,2012,48(1):1-11. |
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| Authors: | YANG He-qun |
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| Institution: | Xi'an Institute of Geology and Mineral Resources , Xi'an , Shaanxi |
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| Abstract: | Abstract:All the bauxite deposits in Northwest China formed in carbonate sediments with ancient weathering crusts. Their primary deposit types are as follows. The Xinjiang Ayili type, located in the western section of the northern margin of the Tarim block, formed in the Upper Carboniferous. The
Shaanxi Tianqiaoze type, located in the northern section of the eastern margin and the eastern section of the southern margin of the Ordos block, formed
in the Upper Carboniferous. The Gansu Dataizi type, located in the southern section of the western margin of the Ordos block, formed in the Cisuralian
Permian. And the Shaanxi Guanping type, located in the northern margin of the Yangtze block, formed in the Guadalupian Permian. Comparison analysis
shows that in Northwest China, from the known distribution and display sections, the most favorable conditions for forming bauxite deposits are in the Ordos block that belongs to westward extension of the bauxite layer in Northern China. It should be the best strategic selection for prospecting of bauxite deposits in Northwest China . |
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| Keywords: | bauxite deposit temporal and spatial distribution genetic type deposit type metallogetic regularity Northwest China |
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