【摘 要】
：
灯草坪岩体位于衡阳盆地西南缘,出露面积约0. 67km2,为燕山晚期花岗闪长斑岩体。文章通过对灯草坪岩体进行主微量元素地球化学研究,讨论了其与周边铜铅锌矿床成矿的关系。分
【基金项目】
：
湖南省核工业地质局“衡阳盆地铜铀多金属成矿潜力及找矿方向研究”项目(编号:KY-2016-306-01),2017年资助青年地质科技人员项目(编号:QNDZKJ-2017-11)联合资助.
论文部分内容阅读
灯草坪岩体位于衡阳盆地西南缘,出露面积约0. 67km2,为燕山晚期花岗闪长斑岩体。文章通过对灯草坪岩体进行主微量元素地球化学研究,讨论了其与周边铜铅锌矿床成矿的关系。分析显示灯草坪岩体具有高(过)铝、高硅、高K2O/Na2O和高Fe2O3/FeO比值,为镁质、高钾钙碱性岩系,W、Bi、Ag、As、Sb等元素丰度较高,ΣREE值总量中等,轻稀土较富集,δEu值接近1,为铕正常型,δCe值0. 84,具铈的弱的负异常。其岩石学、元素地球化学特征反映岩体形成于碰撞后环境,深部地壳或地幔物质参与了成岩-成矿作用
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