谢燮;李文明;孙吉明;李军;黄敏;

• 1:中国地质调查局西安地质调查中心
• 2:国土资源部岩浆作用成矿与找矿重点实验室
• 3:新疆地质矿产勘查开发局第六地质大队

摘要(Abstract)：

白山镁铁-超镁铁岩体为新疆北山地区新近发现的一处铜镍矿化镁铁-超镁铁岩体,岩体位于新疆北山裂谷带骆驼峰-矛头山断裂南侧,侵位于敦煌岩群,主要由纯橄岩、辉橄岩、橄长岩、橄榄辉长岩、橄榄苏长岩、苏长岩、辉长岩等组成。全岩成分以低碱、低钛为特征,岩浆演化过程中发生了橄榄石、单斜辉石和斜长石的分离结晶作用,经历了一定程度的地壳混染。通过LAICP-MS锆石U-Pb测年,首次获得白山岩体中橄榄苏长岩形成年龄为(298.4±3.3)Ma。该岩体地质学、岩相学、岩石地球化学特征,以及成岩时代均与区域内及东天山地区含矿岩体有较强的相似性,综合地物化信息显示,岩体具有较好的铜镍成矿潜力,其发现进一步证明新疆北山地区具有较大的铜镍找矿空间。

关键词(KeyWords)： 锆石U-Pb年龄;地球化学特征;镁铁-超镁铁岩体;白山

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局项目“天山-北山成矿带那拉提-营毛沱地区地质矿产调查”(DD20160009)

作者(Author): 谢燮;李文明;孙吉明;李军;黄敏;

Email:

DOI: 10.19509/j.cnki.dzkq.2018.0602

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