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    王忠, 安春杰, 邵军, 孟二根, 张明. 大兴安岭莫尔道嘎地区新元古代巨斑状碱长花岗岩地球化学特征[J]. 地质与资源, 2005, 14(3): 187-191. DOI: 10.13686/j.cnki.dzyzy.2005.03.006
    引用本文: 王忠, 安春杰, 邵军, 孟二根, 张明. 大兴安岭莫尔道嘎地区新元古代巨斑状碱长花岗岩地球化学特征[J]. 地质与资源, 2005, 14(3): 187-191. DOI: 10.13686/j.cnki.dzyzy.2005.03.006
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    WANG Zhong, AN Chun-jie, SHAO Jun, MENG Er-gen, ZHANG Ming. GEOCHEMICAL CHARACTERISTICS OF NEOPROTEROZOIC LARGE-PORPHYRITIC ALKALI-FELDSPAR GRANITE IN MORDAGA AREA[J]. Geology and Resources, 2005, 14(3): 187-191. DOI: 10.13686/j.cnki.dzyzy.2005.03.006
    Citation: WANG Zhong, AN Chun-jie, SHAO Jun, MENG Er-gen, ZHANG Ming. GEOCHEMICAL CHARACTERISTICS OF NEOPROTEROZOIC LARGE-PORPHYRITIC ALKALI-FELDSPAR GRANITE IN MORDAGA AREA[J]. Geology and Resources, 2005, 14(3): 187-191. DOI: 10.13686/j.cnki.dzyzy.2005.03.006
    shu

    大兴安岭莫尔道嘎地区新元古代巨斑状碱长花岗岩地球化学特征

    GEOCHEMICAL CHARACTERISTICS OF NEOPROTEROZOIC LARGE-PORPHYRITIC ALKALI-FELDSPAR GRANITE IN MORDAGA AREA

      摘要
    • 摘要: 莫尔道嘎地区巨斑状碱长花岗岩是额尔古纳地块最早的岩浆活动的产物.对巨斑状碱长花岗岩的地质学、岩石地球化学特征进行了阐述,确定岩体形成于新元古代,属同碰撞期陆壳改造型钙碱性花岗岩.认为自新元古代开始,额尔古纳地块进入了强烈碰撞增生演化阶段.

       

      Abstract: The large-porphyritic alkali-feldspar granite in Mordaga area is the product of the first magmatic activity of Ergun block. Study on the geological and geochemical characteristics of the large-porphyritic alkali-feldspar granite shows that the batholith was formed in Neoproterozoic Era during the continental crust evolution in syn-collision setting. From then on, the Ergun block started its intense collision-accretion period.

       

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