| 甘肃新金厂金矿伸展滑覆构造及其控矿作用 |
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| 引用本文： | 奚小双. 甘肃新金厂金矿伸展滑覆构造及其控矿作用[J]. 岩土工程界, 1994, 0(1) |
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| 作者姓名： | 奚小双 |
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| 作者单位： | 中南工业大学 |
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| 基金项目： | 有色金属系统高校基础研究基金,国家自然科学基金 |
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| 摘 要： | 甘肃安西县新金厂金矿床受区域性伸展运动形成的滑覆构造控制，由拆离断层、半地堑断层和变质核杂岩组成。新金厂成矿构造为地堑断层的次级雁行断层、老金厂成矿构造为平行地堑断层的局部滑覆系统。矿区矿脉构造类型由成矿热液的流体压力大小来确定，矿床具有浅成低温热液金矿床特征。新的成矿构造类型和矿床成因类型的建立有助于勘探工作的进行。
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| 关 键 词： | 伸展构造，拆离断层，浅成低温热液金矿，甘肃 |
THE EXTENSIONAL GLIDING NAPPE AND ITS CONTROLLING OVER THE METALLOGENY IN THE XINJINCHANG GOLD DEPOSIT, GANSU PROVINCE |
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| Xi Xiaoshang. THE EXTENSIONAL GLIDING NAPPE AND ITS CONTROLLING OVER THE METALLOGENY IN THE XINJINCHANG GOLD DEPOSIT, GANSU PROVINCE[J]. Geotechnical Engineering World, 1994, 0(1) |
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| Authors: | Xi Xiaoshang |
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| Abstract: | The Xinjinchang gold deposit is controlled by a gliding nappe resulted from the regional extension movement.The gliding nappe consists of the detachment faults, the half graben faults and the metaphor'phic core complex. The metallogenetic structures are proximate grade en-echelon fractures of graben fault in the Xinjinchang gold deposit, whereas, they are the local gliding nappe paralleled to the graben fault in the Laojinchang gold deposit. The structural types of the ore veins were determined by the fluid strength of the ore-forming solution. The gold deposits have charactgristies of epithermal deposits.The determination of new strttctural types and the construction of genetic models of the gold deposits will greatly prompt the prospecting of the gold deposit. |
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| Keywords: | extensional tectonics detachment fault epithermal gold deposit Gansu Province |
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