内蒙古苏尼特左旗北达布锡勒图岩体主微量元素地球化学特征及成因探讨

达布锡勒图岩体位于华北板块与西伯利亚板块兴蒙造山带中的二连-贺根山缝合线北侧附近.通过对岩体各类岩性样品进行稀土和微量元素含量分析,结果显示,花岗闪长岩类(包括黑云花岗闪长岩和花岗闪长岩)成因类型为I-S过渡型花岗岩,成岩岩浆可能为大洋俯冲板片和上覆陆壳变杂砂岩部分融熔的混合岩浆,花岗岩类(包括二长花岗岩、黑云花岗岩和钾长花岗岩)为S-型花岗岩,原岩为变质泥岩,均产出于大陆弧构造环境,非埃达克质岩石.

Major and trace element geochemical characteristics and petrogenesis of Dabuxiletu pluton in the north part of Sonid Left Banner,Inner Mongolia

Content and characteristic numerical values of major and trace elements contain much genetic information,such as source region,evolution and formation environment of magma.The Dabuxile pluton is located near the northern side of the Erlian-Hegenshan suture belt that is part of the suture zone of the North China plate and the Siberian plate(Xing-Meng orogenic zone).Sampling of all rock types of the pluton was conducted to analyze content of REE and trace elements,and the results show that granodiorites compo...