Abstract:

In order to evaluate the resource potential of lead-zinc deposits in Jiangsu Province, the authors firstly analyze the lead-zinc resources situation，then based on the exploration data at moderate or large scales，and by the method of  integrated geo-information modeling, three comprehensive deposit evaluation models are established for different type of deposit and four evaluation working areas are divided in the province. Following above works, the evaluation unit division of the geological unit method are determined, and the 29 smallest evaluation areas are determined by eigen-analysis method. The potential resources of lead-zinc deposits for above 1 000 meters deep in Jiangsu Province are estimated at 968 300 tons  for lead and 1 629 500 tons for zinc respectively. Four potencial areas of lead-zinc deposits west of Nanjing-Zhenjiang area are suggested based on metallogenic condition and the resource potential studies. The present study is benefical to lead-zinc deposit exploration in the province.

Key words: lead-zinc deposit, comprehensive evaluation model, smallest evaluation area, resource potential