| 焦家金矿床成矿流体运移的通道、方式及驱动机制 |
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| 引用本文： | 郭涛,邓军,吕古贤,孙之夫.焦家金矿床成矿流体运移的通道、方式及驱动机制[J].地球学报,2008,29(1):81-88. |
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| 作者姓名： | 郭涛 邓军 吕古贤 孙之夫 |
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| 作者单位： | 中国地质科学院地质力学所，北京100081;中国地质大学，北京100083;中国地质科学院地质力学所，北京100081;山东省黄金工业公司焦家金矿,山东莱州261441 |
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| 基金项目： | 国土资源部科技项目“构造作用下流体的运移及物理化学效应”(编号:992027); 中国地质科学院地质力学研究所基本科研业务费项目“成岩成矿深度构造校正测算研究”(编号:DZLXJK200702) |
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| 摘 要： | 流体输导系统是成矿研究中的一个重要内容.本文通过焦家金矿床地质特征研究及趋势面分析等手段,探讨矿床成矿流体运移的通道和方向,进而对流体运移的方式和驱动作了分析.认为矿体的形成和空间分布受断裂流体输导系统的控制,流体总体从南西向上和侧向运移;由于断裂构造带不同部位岩石破碎程度不同,从而导致具有差异的孔隙度和渗透率,进而影响流体的运移方式;流体运移的驱动力主要由构造产生的附加静水压力所引起,同时重熔岩浆的上侵作用加速了流体的运移速率.
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| 关 键 词： | 趋势面分析 运移通道 运移方式 驱动力 流体 焦家 |
The Channel Way, Style and Driving Mechanism of Ore Fluid Migration in the Jiaojia Gold Deposit |
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| Institution: | Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081;China University of Geosciences, Beijing 100083;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081;Jiaojia Gold Mine, Shandong Company of Gold Industry, Laizhou, Shandong 261441 |
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| Abstract: | The fluid conduction system is an important component part of the metallogenic research.Based on geological studies of the Jiaojia gold mine and trend surface analysis,the authors investigated the channel way and direction of ore fluid migration in this mine and,on such a basis,analyzed the style and driving force for fluid migration.It is held that the formation and spatial distribution of ore bodies were controlled by the fault fluid conduction system,and that the ore fluid moved on the whole from southwest upward and laterally.As the shatter degrees of rocks in the faulted structural zone were different in different positions,the porosities and rates of percolation were also different in different places,which affected the migration style of the fluid.The authors consider that the driving force of fluid migration was mainly caused by additional static water pressure resulting from structures,and that the upward intrusion of the anatectic magma accelerated the fluid migration. |
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| Keywords: | trend surface analysis migration channel way migration style driving force fluid Jiaojia |
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