文章摘要
曾庆栋,戴新义.吉林省金城洞地区元古宙花岗岩地质地球化学特征[J].地质与勘探,2001,(1):79-81
吉林省金城洞地区元古宙花岗岩地质地球化学特征
THE GEOLOGICAL AND GEOCHMICAL FEATURES OF PROTEROZOIC GRANITES IN JINCHENGDONG REGION, JILIN PROVINCE
  修订日期:2000-11-28
DOI:
中文关键词: 元古宙花岗岩 地球化学 岩石学特征 构造环境
英文关键词: granite geochemistry, Jinchengdong region, Jilin Province
基金项目:原地质矿产部“八五”科技攻关项目!(85 -0 1-0 0 2 -0 2 -0 1),中国科学院“九五”重大黄金项目!(KZ95 1-4 0 4-0 2 )资助
曾庆栋  戴新义
[1]中国科学院地质与地球物理研究所,北京100029 [2]吉林省地质科学研究所,长春130012
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中文摘要:
      吉林省金城洞地区位于华北地台北缘东端,区内元古宙花岗岩发育,其主要岩石类型为:早元古宙花岗闪长岩、二长花岗岩、斜长花岗岩,中元古宙花岗闪长岩。这些花岗岩均普遍富含Na2O、AI2O3,为钙碱性系列岩石,各种化学参数表现出Ⅰ型花岗岩的特点。其稀土元素模式为轻稀土富集的右倾曲线,基本无铕异常。花岗岩地球化学特征反映了其构造环境为活动陆缘。
英文摘要:
      Proterozoic granites develop in jinchengdong region, Jilin Province, locate in the eastern part of the northern margin of North China platform. The major granites are mainly early Proterozoic p granodiorite, adamellite, lagiogranite; mid-Proterozoic adamellite. The granitoid rocks are commonly rich in Na 2O, Al 2O 3, and evolved to calc-alkalic rock series. Different chemical parameters of granite show the characteristics of I-type granite. Their REE model is characterized by enrichment in light REE and no Eu anomaly. These geological and geochmical features reflect tectonic environmental cycle.
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