白银矿田外围物化探找矿模型及找矿预测

Modeling of the Gist with Geophysical and Geochemical Information in the Periphery of Baiyin Ore Field and Promoted Application

关键词:  物化探矿  找矿模型  找矿预测  白银矿田

Key words:  goephysical and geochemical exploration  prospecting model  prospecting for ore deposits  baiyin ore field

摘要:

为了解决白银矿田外围的深部找矿问题和探寻在该类地区寻找隐伏金属矿床的有效方法组合,在甘肃省白银市东南区Ⅰ号铜铅锌金银矿普查区采用地电化学测量法、大功率瞬变电磁法、高精度磁测法来寻找隐伏矿体。结果探取该区存在18处元素地球化学异常,15个TEM异常,可能有火山机构存在;总结出适合白银矿田外围地区的物化探找矿模型2个,并最终圈定了4个深部找矿靶区,同时指出进一步的找矿预测研究应该在2-Ⅲ、10-Ⅰ和10-Ⅱ号靶位开展。

Abstract:

To solve the problem of how to search deeply hidden deposits in the periphery of Baiyin ore field and explore the combination of effective methods which are useful to search for concealed metallic deposits, the geo-electrochemical extraction method, high resolution magnetic method, transient electromagnetic method were used to search for deeply hidden deposits in No.Ⅰ Cu,Pb,Zn,Ag deposit survey area in Baiyin, Gansu province.The geophysical and geochemical research results show that there are eighteen element geochemical anomalies and fifteen ransient electromagnetic anomalies in this area.Also, there may be volcanic apparatus here. Finally, four deep ore-prospecting target have been found, while it is noted that the further study should be carried out in 2-Ⅲ、10-Ⅰand 10-Ⅱ target sites. Moreover, according to the results of previous studies and the information obtained through the geophysical and geochemical method, the geophysical and geochemical prospecting model is applicable to the periphery of Baiyin Ore field.