| FLUID DYNAMICS OF ORE DEPOSITS |
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| 引用本文： | Ｖ．Ｉ．Ｓｔａｒｏｓｔｉｎ.FLUID DYNAMICS OF ORE DEPOSITS[J].地学前缘,1996(3). |
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| 作者姓名： | Ｖ．Ｉ．Ｓｔａｒｏｓｔｉｎ |
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| 作者单位： | ＭｏｓｃｏｗＳｔａｔｅＵｎｉｖｅｒｓｉｔｙ |
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| 摘 要： | 矿床学中的流体力学是矿产资源地质领域的一个新方向，它研究成矿流体在具孔隙和破碎的地质媒体中运移的一般规律。这种流体运移以其积极参与构造形成和成矿物质迁移为特征。地壳表层（５～１０ｋｍ）是一个流体系统形成和活动的特殊带，因此可以称为流体圈或成矿圈。它具有不同均匀的结构，其９５％（体积）属挤压带，仅５％为张性带。岩石块体中的压实和挤压作用反映了其内的机构能量积累和转换过程，并作为独特的具有高地球化学活性和剧烈质量迁移的推动力。伸展和减压带通常是质量迁移的终点，矿床于岩石物理条件有利的媒体内富集。在流体的参与下，构造活动和成矿作用最为活跃。矿物质迁移和沉淀的决定因素是液压构造作用，这表现为合适的构造物理环境和水动力作用相结合，导致早期形成主要的水动力裂隙和流体房，晚期于流体房中发生多阶段矿化。这一过程在同沉积裂隙带、火山通道边缘、隆起的外围、背斜核部环境中最为发育。
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| 关 键 词： | 流体动力学 质量迁移 成矿作用 水动力作用 |
FLUID DYNAMICS OF ORE DEPOSITS |
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| V.I.Starostin.FLUID DYNAMICS OF ORE DEPOSITS[J].Earth Science Frontiers,1996(3). |
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| Authors: | VIStarostin |
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| Abstract: | Fluid dynamics of ore deposits is a new direction in the field of geology of mineral resources. It investigates regularities of the displacement of mineralized fluid flows in porous and fractured geological media. The flows are characterized by active participation in structure formation and mass transfer of ore material. The upper shell of the Earth′s crust(5-10km) is a specific zone of origin and functioning of fluid systems and may be called as fluid sphere or ore sphere. It has a heterogeneous structure. More than 95% of its volume constitutes the compression zone and only about 5% is the extension zone. The compaction and compression zones in rock massifs reflect the actions of accumulation and transformation of mechanical energy and serve as peculiar reactors with high geochemical activity and intense mass transfer. The extension and decompression zones are end sites of mass transfer where mineral deposits are accumulated in petrophysicaley favorable medium. The structure and ore forming processes are most active with the participation of fluid flows. The determining role in transfer and deposition of ore material is played by hydraulic tectonic processes. This is expressed as the combination of favorable tectonophysical and hydrodynamic processes that lead to the formation of major hydrofractures and fluid chambers at early stages and the formation of multistage ore bodies in the chambers at late stages. Such processes were most active in the consedimentation fracture zones, edges of volcanic troughs, trenches, periphery of block uplifts and core sections of anticlines. |
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| Keywords: | fluid dynamics mass transfer ore forming process hydrodynamic process |
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