新城金矿床主容矿构造成生应力场的反演估算

Based on elastic mechanics, Mohr-Coulomb shear fractural theory and geometric relationship between pinnate arrangement and shear zone in structural geology, the analytic inverse estimation method and result of principal stress occurrence and magnitudes formed by main host structure of Xincheng gold deposit was introduced to study the metallogenetic regularities and prediction and to guide exploring ores of Jiaojia-type gold deposits, northwestern Jiaodong peninsula. The main host structure of Xincheng gold mine was formed by the NNW gently inclined tension principal stress, the NE over-dip compressive principal stress and Jiaojia structural belt plane with rightward twist. Pitch and rake of orebody were controlled by the NWW middle principal stress. The upper bound of metallogenic depth was estimated about 2750m.