Prospecting methods for gold deposits covered by loess: a case study of the neighboring areas of Shenjiayao gold deposit, western Henan Province

The Shenjiayao gold deposit and its neighboring areas are mostly covered by Quaternary loess. Ore-control structures under loess cover can be effectively detected by such means as high resolution magnetic method, very Low frequency electromagnetic method, CO2 survey and Rn survey, which are all portable geophysical or geochemical methods. Anomalies in structures can be discovered by mobile metals survey method. The combination of these methods can be used in search for gold deposits in areas covered by loess.