| Linglong Gold deposit is mainly distributed in Zhao-Ye metallogenic belt in thenorthern region, as by a series of NEE-NE to the pressure-shear fracture, hot liquid fillingway formed mainly of quartz vein type gold deposits. Jiaojia gold deposit are mainlydistributed in the north of Laizhou to the northwestern of Zhaoyuan and southern Zhaoyuanto the north of Pingdu, the deposit is located in the south of Jiaojia main faults, whichbelongs to the altered rock type gold deposit. From the viewpoint of multistage evolution ofmantle plume, Linglong gold mine and the Jiaojia gold mine are multistage evolution ofmantle plume third tectonic unit of Guo shop mantle branch structure, this will be a newperspective on two types of gold deposits are focus on the analysis and research.Based on the effective use of the previous data,and combining field observation andresearch progress, from the regional structures in this paper, according to the geologicalcharacteristics of the deposit, ore-controlling structure analysis, ore controlling regularity,geophysical characteristics, rock geochemistry and other aspects of research, from the pointof view of multistage evolution of mantle plume of the two gold ore tectonic conditions,analysis of the mantle branch structure ore-controlling characteristics.Linglong gold field and in Jiaojia gold field are ore-controlling fault structure,according to the size and nature of fault structure can be divided into I, II, III grade ofore-controlling fault. From Linglong gold mine and Jiaojia gold ore-controlling tectonicanalysis that, the two mining area all development are quartz vein type gold ore bodies andaltered rock type deposit, quartz vein type deposit is mainly developed in a twist-tenso-shear fault zone, and altered rock type deposit is mainly developed in the pressure–pressure-shear fracture zone.The mineralization types of Linglong gold mine and Jiaojia gold mine in the space areshowing a horizontal zoning characteristics. In Linglong gold mine near the Potouqing faultzone is mainly development altered rock type ore, and near the Linglong fault zone ismainly development quartz vein-type ore, between the two types is transitional type. Nearthe Jiaojia fault mainly development altered rock type ore, and near the Wangershan faultmainly development quartz vein-type ore, between the two transitional type is Hexi Goldmine.Geophysical characteristics indicate that, in the gravitational high level with thenorthwest side, the main indicator of the old metamorphic basement in the distribution area; gravity low area in the gradient belt of South East test, mainly indicates the Linglongsuper-unit and Guo Jialing super-unit granite area. Magnetic gradient with a large scale, andthe NNE direction. Reflect the regional tectonic direction is NNE, the main ore-controllingfaults are NE direction, such as Jiaojia fault belt, Linglong fault belt.According to the hydrogen and oxygen isotope data that showed the main source ofLinglong quartz vein type and Jiaojia altered rock type gold deposit is magmatichydrothermal fluid. The rare earth element data obtained, Linglong ore material most fromthe mantle source, is also part of Jiaodong rock group by metasomatism and remelting,while the main source of Jiao Jia ore material is from mantle minerals, partly from Jiaodonggroup formation.Various data show that Linglong quartz vein type gold deposit and Jiaojia altered rocktype gold deposit have the same metallogenic environment and the same background,resulting in two types of ore deposits in different due to different construction conditions,leading to their experienced different evolution, eventually forming different types of oredeposit. |
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