张建新, 孟繁聪, 杨经绥. 2003: 柴达木盆地北缘西段榴辉岩相变质泥质岩的确定及意义. 地质通报, 22(9): 655-657.
    引用本文: 张建新, 孟繁聪, 杨经绥. 2003: 柴达木盆地北缘西段榴辉岩相变质泥质岩的确定及意义. 地质通报, 22(9): 655-657.
    ZHANG Jianxin, MENG Fancong, YANG Jingsui. 2003: Eclogitic metapelites in the western segment of the northQaidam basin and their geological implications. Geological Bulletin of China, 22(9): 655-657.
    Citation: ZHANG Jianxin, MENG Fancong, YANG Jingsui. 2003: Eclogitic metapelites in the western segment of the northQaidam basin and their geological implications. Geological Bulletin of China, 22(9): 655-657.

    柴达木盆地北缘西段榴辉岩相变质泥质岩的确定及意义

    Eclogitic metapelites in the western segment of the northQaidam basin and their geological implications

    • 摘要: 在柴北缘西段的鱼卡—落凤坡一带,识别出榴辉岩相的变质泥质岩,其典型的矿物组合为石榴子石+蓝晶石+硬绿泥石+多硅白云母±十字石±钠云母+石英+金红石。温压估算获得其峰期变质条件为p=2.3~3.1GPa,T=615~700℃,与相邻榴辉岩形成的温压条件相似。结合大理岩和正片麻岩中保存有残留的榴辉岩相的矿物,认为榴辉岩与围岩经历了共同的变质历史,它们之间的关系是“原地”关系,而不是“构造侵位”关系。

       

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