【摘要】 在甘肃省金川矿区利用磁法、可控源音频大地电磁法及地震P波层析方法进行了深部探测,几种方法综合研究确定了到达2 500 m以上高阻高速体的岩浆源特征,指出了岩浆上涌到达浅部向两侧扩展的近水平的透镜状分支,作为可能的深部含矿超基性岩体与钻孔已见矿体位置相吻合,为金川铜镍矿床的成因模式提供了地球物理依据。建议在进一步研究中应重视探测产状平缓、近水平的高速、低阻体。更多还原

【Abstract】 Deep exploration was carried out in Jinchuan mine of Gansu Province by using magnetic method,controlled-source audio-magneto-telluric method,and P wave seismic tomography.The comprehensive researches based on the above methods revealed the high resistivity and high velocity characteristics of the magma source to the depth of over 2 500 m,suggesting that the lava came to the shallow part and spread on both sides to form shallow nearly-horizontal lenticular branches.The fact that the possible consistency between the deep ore-bearing ultrabasic rock and the mineral deposit revealed by the drilling hole provides geophysical evidence for the metallogenic model of the Jinchuan copper-nickel mine.Future exploration should focus on investigating relatively gentle,nearly-horizontal,high-velocity,and low resistivity bodies.更多还原