CAJ | 학술논문

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、Al2O3，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。
길림성금성동지구위우화북지태북연동단，구내원고주화강암발육，기주요암석류형위：조원고주화강섬장암、이장화강암、사장화강암，중원고주화강섬장암。저사화강암균보편부함Na2O、Al2O3，위개감성 계렬암석，각충화학삼수표현출I형화강암적특점。기희토원소모식위경희토부집적우경곡 선，기본무유이상。화강암지구화학특정반영료기구조배경위활동륙연。
Proterozoic granites develop in jinchengdong reg ion, 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 co mmonly rich in Na2O, Al2O3, and evolved to calc-alkalic rock series. Diffe rent 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. T hese geological and geochmical features reflect tectonic environmental cycle.