摘要
德尔尼矿区勘探比较成功的找矿经验就是自电方法的应用。德尔尼铜矿在勘探初期,自电方法取得了非常好的找矿效果,前人在矿区及外围开展了1/1万自电测网工作,累计工作面积达52 km2,发现自电异常28处,经过验证为矿致异常的14处,可以说,单一物探方法在德尔尼矿区取得了良好找矿效果。因此进入矿区外围勘探后,自电方法仍然作为该类型矿床的首选方法之一。经过几十年的工作,围绕自电异常开展了一系列查证工作,除了发现几处小矿(化)点以外,在找矿规模上均没有形成突破。反思外围找矿停滞不前的原因,有必要对自电异常进行重新认识。文章中围绕矿区超基性岩带上自电异常特征分析入手,从已知区到未知区进行详细解剖,进而对外围找矿方法提出了进一步思考和建议。
The SP method application is the best successful experience in Der＇emy mining area. In the initial ore-prospocting in Der＇emy mining area, SP method have taken an extraordinary effect in ore prospecting, while SP survey on 1/10000 scale has been made in mining area and around it, the area that has been surveyed was summed up to 52 km^2, delineating 28 self-potential abnormities, of which 14 abnormities were validated to be caused by ores. Because of these successes, the SP is still priority for this type ore deposit if the exploration is in the vicinity of mining area. A series of investigation for the SP abnormities has been carried out for tens of years, but no breakthrough in finding big ore deposits has been achieved except for several prospects. So it is necessary to recognize the SP abnormity while seeking the reason of logjam in exploration. On the base of analysis on SP abnormities over ultrabasie rock belt, the paper has anatomized the knew area, then applied to unknew area and put forward some advice in exploration in the vicinity of mining area.
出处
《甘肃冶金》
2007年第6期25-28,32,共5页
Gansu Metallurgy
