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造山带高压麻粒岩的成因是当代岩石学、地球化学、地球动力学等多个科学领域的研究热点之一,它对正确揭示造山带的演化历史和解释其形成机制有重要意义.根据以往的观点,在基性岩体系和长英质/泥质岩体系中,斜方辉石的消失是判别高压麻粒岩相变质的重要标志.然而,在世界少数造山带中,科学家们发现了含斜方辉石的高压麻粒岩.那么,究竟什么样的岩石才能形成这类含斜方辉石的高压麻粒岩?斜方辉石高压麻粒岩形成的地质背景又是怎样的?
The origin of high pressure granulite in the orogenic belt is one of the hotspots in many scientific fields such as contemporary petrology, geochemistry and geodynamics, which is of great significance to correctly reveal the evolution history of the orogenic belt and explain its formation mechanism.According to the past , The disappearance of orthopyroxene is an important indicator for the determination of high-pressure granulite facies metamorphism in the basic rock system and the Chang-Ying / shale rock system.However, in the world’s few orogenic belts, scientists found that With high-pressure granulite with orthopyroxene, then what kind of rock can form such high-pressure granulite with orthopyroxene? What is the geological background of the formation of orthopyroxene high-pressure granulite?