Geophysical and geochemical features of the Zhaishang gold area,Gansu

The ZHaishang gold deposit is located in the west of Min County to Li County mineralization belt of western Qinling.The orebody mainly occurs in slate and siltstone of the Permian period,strictly controlled by the NWW trend faults of which the induced secondary (interlayer) faults belong to the host structure. There are 5 high resistivity anomalies,1 lowrsistivity highpolarization belt and 7 polarization rate anomalies that have been blocked out.Gold veins are consistence with the 100～200 Ω·m of lower high resistivity anomalies and 10%～12% of polarization rate anomalies.The stream sediment survey of 1∶200 000 and 1∶50 000 only show the lower anomalies, and the further soil survey may block out the location and trend of gold bodies.Some prospecting methods and clues have been concluded in the article for helping the field geological work of this area and periphery directly.