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经地质、地球化学综合研究，结果表明，榆树沟麻粒岩地体在经历了高压麻粒岩相的峰期变质之后，普遍经历了角闪麻粒岩相－角闪岩相的退变质作用，退变质期形成了两个世代的角闪石。退变质温压和年龄资料表明，该地体的４个岩性单元经历了相似的退变质作用；退变质作用发生在一个相对封闭的体系中，整个地体为快速抬升。
The results of geology and geochemistry indicate that the Yushugou granulite body generally experienced retrogressive metamorphism of hornblende-facies-amphibolite facies after experiencing the peak metamorphism of high-pressure granulite facies, The retrograde period forms amphiboles of two generations. The tectonic temperature-compression and age data show that the four lithologic units of this site experienced similar retrogressive metamorphism. The degenerated metamorphism took place in a relatively closed system, and the entire terrane was rapidly uplifted.