快速检索 年期检索 高级检索
    马旭东, 陈丹玲. 2006: 柴达木盆地北缘超高压变质岩的围岩长英质片麻岩锆石LA—ICP—MS定年. 地质通报, 25(1): 99-103.
    引用本文: 马旭东, 陈丹玲. 2006: 柴达木盆地北缘超高压变质岩的围岩长英质片麻岩锆石LA—ICP—MS定年. 地质通报, 25(1): 99-103.
    shu
    2006: LA-ICP-MS zircon U-Pb dating of quartzo-feidspathic gneisses--the country rocks of ultrahigh-pressure metamorphic rocks on the northern margin of the Qaidam basin, Northwest China. Geological Bulletin of China, 25(1): 99-103.
    Citation: 2006: LA-ICP-MS zircon U-Pb dating of quartzo-feidspathic gneisses--the country rocks of ultrahigh-pressure metamorphic rocks on the northern margin of the Qaidam basin, Northwest China. Geological Bulletin of China, 25(1): 99-103.
    shu

    柴达木盆地北缘超高压变质岩的围岩长英质片麻岩锆石LA—ICP—MS定年

    LA-ICP-MS zircon U-Pb dating of quartzo-feidspathic gneisses--the country rocks of ultrahigh-pressure metamorphic rocks on the northern margin of the Qaidam basin, Northwest China

      摘要
    • 摘要: 柴达木盆地北缘大柴旦地区超高压变质岩的围岩--长英质片麻岩的主要矿物组合为石榴子石+蓝晶石+多硅白云母+条纹长石+石英+斜长石,形成压力在800MPa以上.在阴极发光图像内部结构研究的基础上,利用LA-ICP-MS对该长英质片麻岩中锆石的变质微区进行了详细的原位微区U-Pb定年,得到206Pb.238U加权平均年龄为427.2 Ma±4.5 Ma,对应的Th/U为0.01～0.06.该年龄与本区已有的榴辉岩的围岩超高压泥质片麻岩、石榴子石橄榄岩的变质年龄在误差范围内一致.

       

      • HTML全文
      • 参考文献(0)
      • 相关文章
      • 施引文献
    • 资源附件(0)

    /

    返回文章
    返回