The Mesozoic Intracontinental Magmatic Core Complex Detachment-spondylolisthesis Zone Mineralization And Deep Forecast In Northwest Of Jiaodong

Jiaodong gold mine’s scale is on a global level, related to the floor area’s Mesozoicgranite. Most researchers believe that it is closely related to the causes and effects ofplate tectonic collision. However, Jiaodong gold mine belongs to an intracontinentaltectonic magmatic environment, only use plate tectonics theory can not explain thecauses exactly. This paper points out that Northwest of Jiaodong develop a dome-shapedor ovate mineralization granitic intrusive complex, peripheral is metamorphic andMesozoic strata. The author believes that it is different from the metamorphic corecomplex, but a "magmatic core complex” structure, then systematically studied therelationship between geological characteristics and gold mine.The author participated in several research projects related to the Jiaodong goldmine during graduate. There are: Shandong Gold Group research projects“linglong mineJiuqu-DaKaitou-1000~-1500m deep geological prospecting direction research” and“LingShangou gold spatial distribution of altered rock and regularity of ore body”,Shandong Bureau of Geology and Mineral six teams “Structure and mineralization ofthe Jiaodong gold ore concentration area control”, National Land Agency explorationprojects in Shandong“Laizhou-Zhaoyuan law of evolution and mineralization tectonicphase system” and other research projects. According to the topics for papers, in theprocess of participating in research projects all of above,the author conducted a numberof field geological survey of the field and underground, then finish the collate andanalyze in the interior, gained lots of measured data.After studying literature and theresults of a comprehensive analysis of previous work, the author completed a master’sdegree thesis, the main research progress are:1. Participate in the preparation of plastic Northwest Mesozoic tectonic magmaticphase diagram, the Mesozoic granites associated with mineralization points: Linglonglike gneissic biotite granite, Luanjiahe coarse-grained granite and monzonite Guojialingporphyritic granodiorite, and three types of mineralization is closely related with granitecalled "core complex magma rock"; 2. From the geological characteristics, geometry, kinematics, dynamics and stressfield inversion, etc., systematic research detachment zone geological features, whichdetermine the direction of the relative movement of the disc is about SE130°, structuralmorphology of the plane "S "type, cross-section of the steep relief under the" shovel"structure;3. The initial establishment of glue Northwest magma core complex structure,namely the core magma-main detachment zone (shear zone)-composed modecaprock;4. Discussed the Northwest of Jiaodong magma core complex patterns and deep oreprospecting direction, gold mostly produced from the demolition of the magmatic corecomplex parts from slipping with both lead ore structure is host structures. The presenceof gold,"the second enrichment zone" in the deep, have a great prospecting potential.