【摘要】 讨论了小型脉状金矿的地质及激发极化异常特征,通过已知脉状金矿体的实例,说明寻找隐伏金矿时,要注意研究低缓的,幅度较小但稳定连续的异常,这些激发极化异常有可能是小型脉状金矿体的反映。由于成矿条件的限制,在金属硫化物含量不同的情况下,矿体可以表现为低阻高极化体,也可能表现为高阻高极化体。电阻率法受地形影响大,不易分辨小型脉状体的异常,可以作为评价和解释的参考信息,而激发极化法受地形影响小,是寻找含硫化物的小型脉状金矿体的有效方法。更多还原

【Abstract】 Geology and induced polarization anomaly characteristics of small veinlike gold deposits are discussed in this paper.In the course of gold ore exploration,special attention should be paid to low and stable anomalies in that they might be the reflection of small veinlike gold deposits,and this has been proved by the detection of known veinlike gold ore bodies.Due to different ore-forming conditions,the gold ore body may appear either as a low resistivity and high polarizability body or as a high resistivity and high polarizability body.The resistivity method is affected a lot by topography,and anomalies caused by small veinlike gold ore bodies cannot be easily separated from those caused by topography.These anomalies can serve as the referential information for interpretation.The induced polarization method is an effective means for exploring small veinlike gold ore bodies,because this method is less affected by topography.更多还原