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ore controlling role
相关语句
  控矿作用
     A STUDY OF ROCK CONTROLLING AND ORE CONTROLLING ROLE OF THE MACHAOYING FAULT IN WESTERN HENAN
     豫西马超营断裂带的控岩控矿作用研究
短句来源
     ORE CONTROLLING ROLE OF SUBVOLCANIC ROCK IN THE DONGAN GOLD DEPOSIT, HEILONGJIAN
     黑龙江东安金矿潜火山岩的控矿作用
短句来源
  相似匹配句对
     Controlling F.
     因此控制F.
短句来源
     and ore-controlling geological interface.
     地质界面控矿。
短句来源
     Quality of Controlling Output of Ore with Computers
     应用电子计算机控制输出矿石的质量
短句来源
     YUANMOU METAMORPHIC CORE COMPLEX AND ITS ORE-CONTROLLING ROLE
     元谋变质核杂岩及其控矿作用
短句来源
     The Gold in the Ore
     矿藏里的金子
短句来源
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Washan area is the well-known locality of "porphyrite iron deposits" in middle and lower reaches of the Yangtze River. Most of the rich orebodies are distributed in circular pattern, obviously formed by ore-bearing solutions filling ring-shaped fissures or fracture zones. Much controversy exists concerning the genesis of such kind of structural body. The main opinions include: (1) cupola-like fissures resulting from the difference between the surrotmding pressure and the internal pressure of the magma;...

Washan area is the well-known locality of "porphyrite iron deposits" in middle and lower reaches of the Yangtze River. Most of the rich orebodies are distributed in circular pattern, obviously formed by ore-bearing solutions filling ring-shaped fissures or fracture zones. Much controversy exists concerning the genesis of such kind of structural body. The main opinions include: (1) cupola-like fissures resulting from the difference between the surrotmding pressure and the internal pressure of the magma; (2) cooling-contraction fissures of the intrusions; (3) remnant paleovolcanic structures; and (4) attache structures of explosive breccia pipes. Since 1960s, according to the viewpoint of geomechanics, the author has made detailed investigation into five ore deposits and on such a basis, summarized the following basic facts:(1) There unexceptionally exist well-developed schistose rock zones surrounding the ring-shaped or broom-like orebodies and, what is more interesting, some peculiar fissures have been observed, such as arc fissures, snail-shaped sliding surface and "8"-shaped fissures.(2) The center of the ring-shaped orebody or the convergent part of the broom-like ore veins contain mainly breccia bodies or brecciated ore bodies.(3) In some cases, sphenoidal breccia zones nearaly perpendicular to ring-shaped orebodies are seen, whose pinching-out end points to the center of the ringed vein.(4) Orebodies are thick, large and relatively rich at the center of the ring shaped ore veins or the convergent part of the broom-like ore veins, and gradually become thinner and poorer outwards.In addition, the regional joint measurement and the subsequent computer simulation of the ancient strain field demonstrate that the Washan area had the largest shear stress during the whole ore-forming epoch. Generally speaking,the unhomogeneous concentration of shear stress may result in the formation of vortex structure. It is inferred from the magnetic high upward continued to 5 km that there exists in the northwest part of the Washan area a concealed basic rock body around which the main ore deposits and ore-bearing zones are arranged in turbine form along the vortex structure.As none of the above-mentioned opinions can explain satisfactorily these basic facts, the author considers that although not only the ring-like ore veins but also the whole orebodies have complex geneses, the vortex structures must have played the leading ore-controlling role.

本文从凹山地段各种旋扭构造与环状铁矿床的关系,探讨了旋扭构造对整个铁矿床形成的控制作用,并分析了控矿过程,指出了以往遵循的岩性、火山构造控矿理论的局限性,为进一步找矿开辟了一条新的思路。

A large mylonite zone is distributed on the footwall of Nanxiong fault,which is parallelto the fault. On the hanging wall,there is a Meso-Cenozoic basin. As sedimentation centersare moved towards the side of the fault,the strata become more younger. By investigation ofthe mylonite zone along the profile on the footwall of the fault,the author studies in detailvarious kinds of ductile deformation fabrics in mylonites such as S--C fabrics,rotational porphyroclasts and stretching lineations etc. In the light of...

A large mylonite zone is distributed on the footwall of Nanxiong fault,which is parallelto the fault. On the hanging wall,there is a Meso-Cenozoic basin. As sedimentation centersare moved towards the side of the fault,the strata become more younger. By investigation ofthe mylonite zone along the profile on the footwall of the fault,the author studies in detailvarious kinds of ductile deformation fabrics in mylonites such as S--C fabrics,rotational porphyroclasts and stretching lineations etc. In the light of the kinematic direction of deformational fabrics,together with the characteristics of brittle tectonites in the fault and the distribution of normal faults in the basin,the author believes that Nanxiong fault is a big--size denudational fault. According to the formation and evolution of the denudational fault,its rockand ore-controlling roles,the relations between the fault and uranium metallogenesis are alsopreliminarily discussed.

南雄断裂带下盘发育规模较大,平行于断裂走向的糜棱岩带,上盘为一中新生代盆地,随着地层时代的变新,沉积中心向断层一侧迁移。本文通过对断裂下盘糜棱岩带的剖面测量,对糜校岩中S-C面理、旋转碎斑和拉伸线理等各种韧性变形组构的详细研究,根据变形组构的运动学指向,结合断裂带内脆性构造岩及盆地中正断层的发育状况和展布特征,确定南雄断裂为一规模巨大的剥离断层。对剥离断层与铀成矿的关系本文也进行了初步探讨。

The Gezhen auriferous shear zone controlling all gold deposits in western Hainan island underwent at least three times of structural deformations and three related mineralizations. At an earlier stage it was formed in Caledonian cycle,allocated in the contacting zone between western Hainan terrain and eastern Hainan terrain, and featured by ductile rheologic deformation, while in the later stage auriferous felsic veins were formed.In Hercynian Indosinian cycle the Gezhen auriferous shear zone underwent superimposition...

The Gezhen auriferous shear zone controlling all gold deposits in western Hainan island underwent at least three times of structural deformations and three related mineralizations. At an earlier stage it was formed in Caledonian cycle,allocated in the contacting zone between western Hainan terrain and eastern Hainan terrain, and featured by ductile rheologic deformation, while in the later stage auriferous felsic veins were formed.In Hercynian Indosinian cycle the Gezhen auriferous shear zone underwent superimposition of ductile brittle deformation. The zonation of deformation intensity of such structure has a close connection with spatial location and zonation of gold ore types. Mylonite type gold deposits occur in the center of northeast part of the shear zone characterized by ductile deformation, strong strain and stress concentration, whereas gold quartz veins lie on the margin or in the southwestern part of the shear zone characterized by weak deformation intensity, dispersal stress and ductile brittle deformation type. In Yanshanian cycle the Gezhen shear zone was transformed by brittle deformation with magmatic hydrothermal activity, forming shatter altered rock type gold deposits. Mylonite type, quartz vein type and shatter altered rock type gold deposits constitute a whole metallogenic series for the auriferous shear zone, with the three types of deposits named Hongfumenling type, Bumo type and Bainiu type. In addition, based on researches of geological features of the three types of deposits, the authors set forth the ore controlling role of source bed, metallogenic fluids and physicochemical parameters, and put foward four stage metallogenic model for auriferous shear zone according to the isotopic age data for relationship between the shear zone and the gold mineralization.

古生代以来,海南西部戈枕含金剪切带至少经历了三次类型不同的构造变形,并发生了三次相关的金矿化。该剪切带的构造变形,在加里东旋回发生于抱板群矿源层下构造层次,表现为韧性剪切,其晚期形成含金长英质脉;在海西-印支旋回发生于中构造层次,表现为韧-脆性变形,形成糜棱岩型和石英脉型金矿床;燕山旋回的构造变形发生于上构造层次,表现为脆性特征,并伴有岩浆热液作用,形成最具工业价值的破碎蚀变岩型金矿床。本文在此基础上提出了含金剪切带型金矿成矿系列概念,具体厘定出红甫门岭糜棱岩型、不磨石英脉型及北牛破碎蚀变岩型三种矿床式,并总结了含金剪切带构造成矿四阶段模式。

 
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