| The Linglong Gold Mine is the largest quartz vein type gold deposit in the Jiaodong area,and the fault structure is the main ore-controlling element.As the depth of mining increases,the study of the laws governing the deep structure is particularly important.This paper relies on the “Linglang gold ore field controlled rock control structure analysis and prospecting target area prediction” and the “Lingling Lingshangou gold ore field control rock control structure analysis and prospecting prediction” project,before collecting,sorting and analyzing a large number of research Based on human geological data,using mineral deposits,structural geology,and geochemical theoretical methods,the geological characteristics and tectonic ore-controlling characteristics of the Linglong gold ore field are studied from the aspects of modern tectonic geology and dynamics,and the ore-forming rules are summarized.It has played a positive role in promoting the prospecting of deep prospecting in Linglong Goldfield.The research work mainly achieved the following understanding:(1)The tectonic movement of the Linglong gold deposit has the characteristics of multi-stage multi-stage superposition,and the structure is staged and matched.According to the intersection relationship between the structures,the structure is divided into pre-mineral structure,metallogenic structure and post-metallogenic structure.The NE,NEE,and NNE ore-controlled fault structures are structural combinations of different directions and different mechanical properties formed under the same tectonic stress.Among them,the NNE structure is mostly shear fracture,and the plane is characterized by right-line shear;the NEE structure is mostly shear-shear fracture,and the plane is characterized by left-type shear;the NE-trending structure is mostly tensile.The EW-oriented structure is the basement structure in the area,and the NW-oriented structure is formed later,which has a destructive effect on the deposit.(2)By counting the inner joints of the exquisite gold ore field,the projections are calculated to the three principal stress directions of Wu's network,and it is concluded that the ore field is mainly subjected to the compression of NE to SW.(3)The broken head blue fault and its derived secondary fault system control the scale of the Linglong gold ore field and form a set of “in” shape structure combinations in space.(4)By calculating the dislocation density of quartz mineral crystals in the altered rock,the difference stress in the ore-forming period is calculated.It is found that the tectonic activity is strong in the place with large difference stress,and the rock is deformed after being squeezed and easily broken.The structural correction measurement algorithm is used to estimate the metallogenic depth of the Jiuqu ore section from 1962.48 to 2204.84 m,and the denudation depth is 1662.48 m to 1904.84 m. |
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