金川铜镍矿床的地球物理深部结构与成因模式
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
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。
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.
引文
甘肃省地质矿产局第六地质队.1984.白家咀子硫化铜镍矿床地质[M].北京:地质出版社.
    李献华,苏犁,宋彪,等.2004.金川超镁铁侵入岩SHRI MP锆石U-Pb年龄及地质意义[J].科学通报,49(4):401-402.
    钱辉,姜枚,等.2011.天山-准格尔地区地震层析成像与地壳结构[J].地震学报,33(3):1-15.
    汤中立.1990.金川硫化铜镍矿床成矿模式[J].现代地质,4(4):55-64.
    汤中立.1991.金川含铂硫化铜镍矿床成矿模式[J].甘肃地质,(2):104-124.
    汤中立,杨杰东,徐士进,陶仙聪,李文渊.1992.金川含矿超铁镁岩的Sm-Nd定年[J].科学通报,37(10):918-920.
    汤中立.1995.金川铜镍硫化物(含铂)矿床成矿模式及地质对比[M].北京:地质出版社.157-160.
    汤中立.1996.中国岩浆硫化物矿床的主要成矿机制[J].地质学报,70(3):237-243.
    汤中立,钱壮志,等.2006.中国铜镍铂岩浆硫化物矿床与成矿预测[M].北京:地质出版社.
    杨合群.1991.论金川硫化铜镍矿床成因[J].中国地质科学院院报,22:117-135.
    张恒磊,刘天佑,朱朝吉,等.2011.高精度磁测找矿结果-以青海尕林格矿区为例[J].物探与化探,35(1):12-16.
    Clark D A.1997.Magnetic petrophysics and magnetic petrophy:aids togeological interpretation of magnetic surveys[J].Journal of Aus-tralian Geology and Geophysics,17(2):83-103.
    Schmidt P Wand Clark D A.1998.The calculaion of magnetic compo-nents and moments from TMI:Acase study fromthe Tuckers ig-neous complex,Queensland[J].Exploration Geophysics,29(4):609-614.
    ①金川铜钴研究设计院矿山分院,甘肃地勘局第二勘查院.2007.金川铜镍矿东延M15磁异常地面物探查证工作报告.
    ②甘肃省地质矿产局第六地质队.1981.甘肃永昌白家咀子铜镍矿-矿区西端隐伏矿体评价及三矿区南侧磁异常验证报告.
    ①甘肃省地质矿产局第六地质队.1984.甘肃金昌白家咀子铜镍矿MV号磁异常补充检查地质报告.
    ①甘肃省地质矿产局第六地质队.1984.甘肃金昌白家咀子铜镍矿MV号磁异常补充检查地质报告.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心