井中激电在金矿床上应用的地质效果

本文是长江中下游铁铜成矿带中洋鸡山硫化物型金矿床上井中激电成果之一。通过在矿区初勘阶段中激发极化测井,不仅为地面激电异常解释提供了客观真实的物性参数(η、ρ)依据,合理地评价了地面激电异常,而且在岩矿心采取率不高或空段,发现了漏编的矿层,正确指导补斜。特别是地一井方式方位测量,发现了孔旁盲矿(极化体),所推断引起异常的盲矿体相对钻孔的空间位置,大致深度和产状均与钻探结果相符。在矿区矿床勘探中发挥了良好作用,取得了较为理想的效果。

THE APPLICATION OF BOREHOLE INDUCEDPOLARIZATION TO A GOLD DEPOSIT

This paper presents ohe of the borehole 1Pregults gained in the Yangji-shan sulfide type gold deposit on the Middle and 1.oweI Yangtze iron--coppermetallogenic belt. The 1Plogging peIformed at the preliminaIy exploration sta-g9 of the ore distIict not only Pxovided objective and authentic parametersof physical properties(η,ρ)for the inteIpretation of gtound IPanomalies whichtesulted in the l-ationa1 appIaisal of ground IPanomalies, but also discoveredore beds whiC1 had escaped compilation, thus correctly guiding supplementaIyoblique drilling. The surfaop--borehole azimuth survey, in particular, detecteda blind orebody(polarized body)near the borehole, and t11e spatial location,appIoximate depth and attittide of the inferred blind orebody axousing theanomaly are in agreement with the results of drilling. The bore hole inducedpolarization played a satisfactory role in the exploIation of tl1e ore distIictand led us to gain ideal results.