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张宣高变质花岗岩－绿岩带内早期花岗质侵入体是以英云间长岩和花岗间长岩为主体的ＴＴＧ岩系，经历了麻粒岩相高级变质作用的改造，已变质成以含紫苏辉石为特征的片麻岩类岩石。麻粒岩相峰期变质作用的时代为２３９０±１９Ｍａ。紫苏花岗岩属典型岩浆成因侵入岩，其侵位成岩时代为２３９０±２４Ｍａ，是区域麻粒岩相峰期变质作用期间长英质熔浆直接结晶的产物。钾质花岗岩类具多种不同的岩石类型，为一系列小规模的富钾质花岗岩侵入体，是与紫苏花岗岩同一构造岩浆活动事件的产物。麻粒岩相峰期变质作用、岩浆活动时代的一致性，表明了本区太古宙末－古元古代早期，由于大规模构造运动，麻粒岩相变质作用由峰期变质条件向相对低温低压条件演化、花岗岩－绿岩带基底岩石由地壳深部向地壳浅部抬升、并同时伴随紫苏花岗岩及钾质花岗岩等大规模岩浆侵入活动的区域地壳演化规律。
The Zhangxuangao metamorphic granite-early diabase granite intrusive zone is a TTG series mainly composed of Yingyun and Changgai granites. It has undergone metamorphism of granulite and metamorphism and has been altered to Gneisses characterized by peridotite. The age of granulite facies metamorphism is 2390 ± 19Ma. Perilla is a typical magmatic intrusive rock with an emplacement diagenetic age of 2390 ± 24 Ma, which is the product of the direct crystallization of the felsic magma during peak metamorphism of the regional granulite facies. Potassium-rich granites have a variety of different rock types and are a series of small-scale intrusive, potash-rich granites that are the product of the same tectonic magmatism event from peridotite. The metamorphism of the granulite facies and the congruence of the age of the magmatism indicate that the metamorphism of the granulite facies metamorphosed from the peak metamorphism to the relative low temperature and low pressure at the end of the Late Archean-Early Paleoproterozoic due to the large-scale tectonic movement. Under the condition evolution, the basement rocks of the granite-greenstone belt are uplifted from the deep crust to the shallow crust, accompanied by the regional crustal evolution of large-scale magmatic intrusion activities such as peridotite and potassic granite.