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大尹格庄—后仓测区位于招平断裂带中段之大尹格庄金矿东侧。根据深部探矿目标区的特点和方法的有效性试验,选择构造地球化学测量和大地电磁测深作为深部矿体定位预测的手段。本次地表构造地球化学测量范围约8 km2,在测区中部、东部和西部发现3处成规模的Au元素异常带,结合因子分析,提出Au-As-Hg-Cu-Pb-Zn元素组合异常对应深部成矿流体活跃地段,Au和As元素可作为深部矿体预测的主要标志元素,Cu、Pb、Zn等元素异常更多地反映了多金属硫化物成矿阶段流体活跃的地段,可作为辅助标志。岩、矿石样品电阻率测定显示,与招平断裂带有直接空间关系的富矿石、黄铁绢英岩化蚀变岩及断层泥表现为显著的低阻体,与上、下盘的胶东群变质岩和玲珑花岗岩电阻率值差异明显,为大地电磁测深的有效性提供了依据。根据大地电磁法获得的深部呈串珠状分布的低阻异常,圈定出玲珑花岗岩与胶东群变质岩界线、招平断裂带位置,深部低阻异常中心指示了断裂带局部膨大和成矿有利部位。根据构造地球化学元素组合异常和大地电磁测深电阻率异常的空间分布关系,共圈定找矿靶位8处,钻探工程验证在1 150～1 450 m深度发现了金矿体。
Dayinge Zhuang - Houcang test area is located in the middle section of the Zhaoping fault zone Yingezhuang gold east. According to the characteristics of the deep prospecting target area and the validity of the method, tectonomagnetism and magnetotellurism are selected as the means to predict the location of deep orebody. The surface tectonic geochemistry measurement range is about 8 km2. Three anomalous Au-anomalous bands are found in the central, eastern and western part of the survey area. Combined with factor analysis, it is proposed that the Au-As-Hg-Cu-Pb-Zn elemental anomaly Corresponding to the active ore-forming fluids, Au and As elements can be used as the main markers for the prediction of deep ore bodies. The anomalies of elements such as Cu, Pb and Zn more reflect the fluid active phases in the polymetallic sulphide mineralization stage. Auxiliary signs. The resistivity measurements of rock and ore samples show that the ore-rich, pyrititic alteration rocks and fault muds that have a direct spatial relationship with the Zhaping fault show significant low-resistivity bodies, which are related to the Jiaodong Group metamorphic rocks of the upper and lower plates And exquisite granite resistivity value difference is obvious, provide the basis for the validity of the earth electromagnetic sounding. According to the deep beaded distribution of low resistivity anomalies obtained by the MT method, the boundaries between the exquisite granite and the Jiaodong Group metamorphic rocks are delineated and the location of the Zhaozhu fault zone is identified. The deep low resistivity anomaly center indicates the local enlargement of the fault zone and the favorable metallogenic site. According to the spatial distribution relationship between the tectono-geochemical elemental anomaly and the EMF resistivity anomaly, a total of 8 prospecting targets were delineated. The drilling project verified that the gold ore body was found at a depth of 1 150-1 450 m.