Volcanic rocks of Tamulangou-Jixiangfeng cycle in Late Jurassic are alkaline-subalkaline series, and they derived from upper-mantle and were contaminated by continental crust materials.

 
  • 晚侏罗世塔木兰沟-吉祥峰旋回火山岩为碱性系列-亚碱性系列,岩浆来源于上地幔并有陆壳物质的混染;
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