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对云开核部韧性 -流变剪切变形眼球状花岗岩石样品进行了全岩 Sm- Nd、Rb- Sr同位素年龄测定 ,获得 1414±6 8Ma的 Sm- Nd等时线和 490± 36 Ma的 Rb- Sr等时线年龄 ,它们分别代表这套花岗岩的形成时代和加里东期韧性 -流变剪切部分熔融构造热事件发生时间 ,表明云开地区不仅在加里东期发生造山运动 ,而且在中元古晚期发生了更为重要的构造—岩浆造山运动 ,其时代与全球性的格林威尔造山运动时间可以对比
Sm-Nd and Rb-Sr isotope dating of whole-rock Sm-Nd and Rb-Sr isotopes in the open-core ductile-rheological shear granulomagnetism were obtained, and the Sm-Nd isochronal line of 1414 ± 6 8Ma and 490 ± 36 Ma Rb-Sr isochron age, which respectively represent the formation age of this granite and the Caledonian ductile-thermal shear event of the melted tectonic part of the shear section, indicating that not only the orogeny occurred during the Caledonian period but also in A more important structure-magmatic orogeny occurred in the middle and late Paleozoic and its era can be compared with that of the global Greenway orogeny