东天山圪塔山口铜镍矿地球物理特征及深部矿产勘查方法探讨

Geophysical Characteristics of Getashankou Copper-Nickel Deposit in East Tianshan and Discussion on Deep Mineral Exploration Methods

随着地质找矿技术的发展,金属矿产勘查逐渐由地壳浅部向深部开展,地球物理勘查在其中起着至关重要的作用。当目标地质体、围岩、岩矿石物性特征相近时,需结合多种地球物理组合方法才能较好地识别目标地质体。基性-超基性杂岩体对应典型的高磁、高重、高极化率及中低电阻率的“三高一低”综合物探异常特征,随着岩体埋深增加,位场急剧衰减,普通地球物理探勘方法很难识别深部的地球物理场。本文借助重力、磁法、常规激电、可控源音频大地电磁(CSAMT)方法进行深部勘查探讨,结合多种地球物理方法识别目标体及干扰体。

With the progress of geological prospecting in recent years, the exploration of metal minerals is gradually carried out from the shallow part of the crust to the deep part, geophysical exploration plays a vital part in it. When the target rock mass is similar to the surrounding rock and the physical properties of a certain rock or ore, it is necessary to combine multiple geophysical methods to better identify the target geological body. The mafic complex corresponds to a typical high magnetic, high weight, and "three highs and one low" comprehensive geophysical prospecting anomaly characteristics of polarizability and medium and low resistivity, as the buried depth of the ore body increases, it is difficult for ordinary geophysical prospecting methods to identify the deep geophysical field. This article uses gravity, magnetic methods, the conventional induced polarization, controlled source audio magnetotelluric(CSAMT) method is used for deep exploration and exploration, combined with a variety of geophysical methods to identify target and interference objects.