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豫西小秦岭地区太华杂岩中花岗质片麻岩为古老侵入岩，主要由黑云斜长片麻岩、黑云钾长片麻岩和黑云二长片麻岩等类型岩石组成，具有ＴＴＧ岩系的组成特征，元素地球化学特征反映其形成于类似现代板块碰撞带的构造环境．
The granitic gneisses in the Taihua Complex in the Xiaoqinling area of western Henan are ancient intrusive rocks, which are mainly composed of biotite plagiogneiss, biotite kerogen and biotite monzogranite , Which has the compositional characteristics of the TTG series. The elemental geochemical characteristics reflect the tectonic environment formed in the collision zone similar to the modern plate.