文章摘要
罗志波,王身龙,张翰奇.西昆仑造山带东段苦阿变质橄榄岩的发现及地质意义初探[J].矿产勘查,2017,8(5):843-848
西昆仑造山带东段苦阿变质橄榄岩的发现及地质意义初探
Discovery and geological significance of the meta-peridotites in Ku’a area, eastern part of western Kunlun orogenic belt
投稿时间:2017-02-07  
DOI:
中文关键词: 航磁异常  变质橄榄岩  蛇绿混杂岩  西昆仑造山带  苦阿
英文关键词: aeromagnetic anomaly, meta-peridotite, ophiolitic melanges, western Kunlun orogenic belt, Ku’a area
基金项目:中国地质调查局新疆和田东三县1∶5万航磁异常查证项目(编号:12120114085701)资助。
作者单位
罗志波 天津市地球物理勘探中心,天津 300170 
王身龙 天津市地球物理勘探中心,天津 300170 
张翰奇 天津市地球物理勘探中心,天津 300170 
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中文摘要:
      基于国土资源航空物探遥感中心圈定的新C-2013-85号航磁异常,通过三级查证工作,于苦阿一带原石炭系阿羌岩组中新发现一套变质橄榄岩,其与变玄武岩、变辉绿玢岩共生。结合以往研究认为,该套岩石可能为西昆仑造山带中残留的原特提斯洋壳物质,在空间上与西侧其曼于特蛇绿混杂岩相连。西昆仑造山带原特提斯缝合带往东延至苦阿一带。变质橄榄岩磁异常明显,Ni含量(0.18%)接近边界品位,指示该异常可能为一处矿致异常,具一定镍矿找矿前景。
英文摘要:
      A set of meta-peridotites associated with meta-basalt and diabase porphyrites, have been newly found by the three-levels of inspection work in previous Carboniferous Aqiang formation located in the aeromagnetic anomaly C-2013-198 which was delineated by China Aero Geophysical Survey and Remote Sensing Center in combination with previous study result, it can be concluded that the set of newly-found meta-peridotites, meta-basalts and diabase porphyrites might be a residual Proterozoic Tethys oceanic crust in western Kunlun orogenic belt, which are joined to the western Qimanyute ophiolitic melanges. Meanwhile, the meta-peridotites, meta-basalts and diabase porphyrites should be disintegrated from Aqiang formation. Consequently, the Proterozoic Tethys suture zone in western Kunlun orogenic belt can extend to Ku’a area. In addition, the meta-peridotites showed distinct magnetic anomaly with 0.83% Ni content which is close to cut-off grade.Therefore, there is prospecting potential for finding nickel ore deposit in meta-peridotites area.
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