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金属矿山 ›› 2012, Vol. 41 ›› Issue (07): 117-119.

• 地质与测量 • 上一篇    下一篇

大兴安岭中段柴河地区碎斑熔岩地球化学特征

司秋亮1,2,王恩德1,崔天日2,李伟2,吴新伟2,江斌2,李林川2   

  1. 1.东北大学资源与土木工程学院;2.沈阳地质矿产研究所
  • 出版日期:2012-07-15 发布日期:2012-07-26
  • 基金资助:

    * 基础地质调查成果集成与综合研究(编号:1212011121134)。

Geochemical Features of the Porphyroclastic Lava in Chaihe Area Middle Daxing′anling Mountains

Si Qiuliang1,2,Wang Ende1,Cui Tianri2,Li Wei2,Wu Xinwei2,Jiang Bin2,Li Linchuan2   

  1. 1.College of Resources and Civil Engineering,Northeastern University;2.Shenyang Institute of Geology and Mineral Resources
  • Online:2012-07-15 Published:2012-07-26

摘要: 在大兴安岭柴河地区开展1∶50 000区调工作时发现了碎斑熔岩体。柴河碎斑熔岩是一种特殊成因的火山岩,属太平洋岩系钙碱质系列岩石,岩石分类属于流纹岩类,稀土配分属铕亏损且轻稀土富集型,Rb、Th元素富集,Ba、K元素亏损明显。

关键词: 碎斑熔岩, 地球化学, 大兴安岭中段, 柴河地区

Abstract: The porphyroclastic lava in Chaihe, Daxinganling region was found during the 1:50 000 regional geological surveys.The porphyroclastic lava of Chaihe area is a special volcanic rock, Studies show that the rock belongs to rhyolites of the Pacific calcium alkali rock series.The REE distribution patterns show a LREE enrichment but a HREE depletion,with remarkable Eu deficiency in the lava.Rb, Th are relatively high and enriched while Ba, K are relatively low.

Key words: Porphyroclastic lava, Geochemistry, Middle Daxinganling mountains, Chaihe area