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high angle fault plays
相关语句
  相似匹配句对
     angle.
     角。
短句来源
     High Accuracy Angle Examination System
     高精度倾角检测系统
短句来源
     High precision roll angle interferometer
     高精度滚转角干涉仪
短句来源
     high integration ;
     集成度高、携带方便等特点。
短句来源
     high-technology;
     产业高技术化;
短句来源
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The recent research achievments of ore forming and ore controlling structures on lode gold deposits are discussed. The occurrence of lode gold deposits is closely related with the Crust contraction system caused by compression and with the orogenesis of the crust. Most of lode gold deposits occur in or near orogenic belts. Au element precipitates in the particular structure position, such as stronger deformation zone, stacked ductile brittle or brittle fractures in the ductile shear zone. The low angle...

The recent research achievments of ore forming and ore controlling structures on lode gold deposits are discussed. The occurrence of lode gold deposits is closely related with the Crust contraction system caused by compression and with the orogenesis of the crust. Most of lode gold deposits occur in or near orogenic belts. Au element precipitates in the particular structure position, such as stronger deformation zone, stacked ductile brittle or brittle fractures in the ductile shear zone. The low angle fault, being as a geochemical inference of mineralization, is the one of the most important ore bearing structures. Although being multiple sources, tectonic dynamic differentiation in the process of tectonic deformation is one of the most important geneses. The migratory mechanism of Au bearing hydro thermal ore forming solution is mainly controlled by fault fractures. The action of the high angle fault plays a valve effect to cause a periodic change of ore forming liquid inner pressures, which result in the crystal of ore forming material and the deformation of minerals take place alternately at same time. Further research needs to be concerned as follows: the deep seated tectonic setting controlling over the Au mineralization, the couple relation between geochemical field of Au mineralization and the evolution of low angle fault, a high temperature and high pressure experiment on structure dynamic differentiation, and a four dimensional ore controlling mechanism of ductile shear zone.

综述了国内外脉状金矿床成矿控矿构造的新近研究成果, 认为脉状金矿床的产出大多与遭受挤压作用所造成的地壳缩短机制有关, 与地壳大规模造山作用过程关系密切,主要产于造山带及其边缘;金元素沉淀的构造部位主要是韧性剪切带中的强变形部位、叠加的韧-脆性和脆性裂隙, 低角度断层既是成矿地球化学界面也是重要赋矿构造;含金成矿流体虽然有多种来源,但构造变形过程中的构造动力分异作用是成矿流体的一种重要成因;成矿流体的运移机制主要受断裂构造控制,高角度逆断层作为阀门引起成矿流体压力的周期性变化, 并导致成矿物质结晶与变形呈同步交替发生;值得进一步深入研究和探讨的问题有金成矿与深部构造的关系、低角度断层的成生演化与金成矿物理化学场耦合关系、构造动力变形作用引发含金热液形成的高温高压成矿实验以及韧性剪切带的四维控矿机制等。

 
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