云开地区广泛出露以花岗质岩石为主体的变质杂岩，其周缘为浅变质的新元古代云开群所环绕，彼此间呈断层接触。花岗质岩石普遍遭受韧性流变改造，形成麻状、眼球状和条带状等有序变形组构，长期以来，对这套花岗质岩石的成因和形成时代存在不同的看法，从而制约了对云开地... Most of the metamorphic rocks, mainly composed of granitic rocks, are exposed in the Yunkai area. Their peripheries are surrounded by the metamorphic Neoproterozoic Yunkai Group and are in fault contact with each other. Granitic rocks generally undergo ductile rheological transformation to form ordered deformed structures such as hemp, eyeball and ribbon. For a long time, there are different opinions on the genesis and forming age of the granitic rocks, Open to the clouds ...