杨高学;闫存兴;李永军;金朝;吴宏恩;司国辉;夏昭德;

• 1:长安大学地球科学与国土资源学院
• 2:新疆维吾尔族自治区有色地质矿产勘察院

摘要(Abstract)：

新疆东准噶尔卡拉麦里地区库布苏南晚古生代后碰撞准铝质过铝质花岗闪长岩体中广泛发育大量的暗色微粒闪长质包体。岩石学、矿物学、主量元素和微量元素地球化学研究表明,包体在地球化学特征上表现为与寄主花岗岩既相互联系又受其制约。库布苏南花岗闪长岩体具有低锶初始比值I(Sr)和正εNd(t)值,表明花岗岩的来源有地幔物质参与,而大量发育的暗色微粒闪长质包体是壳幔岩浆混合作用最直接的证据,微粒包体是基性源岩部分熔融作用形成的残余体。与准噶尔碱性花岗岩一样,载荷包体的准铝质过铝质花岗岩是晚古生代后碰撞阶段构造岩浆活动的岩石类型之一,其形成和演化标志了准噶尔地区后碰撞幔源岩浆底侵作用导致大陆地壳垂向生长的过程。

关键词(KeyWords)： 微粒闪长质包体;花岗岩;地壳生长;卡拉麦里;准噶尔

Abstract:

Keywords:

基金项目(Foundation): 新疆国土资源厅地质大调查项目“新疆青河、奇台县红柳沟-苏吉泉一带1∶5万区域地质矿产调查”(QD200508)

作者(Author): 杨高学;闫存兴;李永军;金朝;吴宏恩;司国辉;夏昭德;

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DOI:

参考文献(References)：

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