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中条山北段元古宙未变质和变质的火成岩分属于3大阶段5期岩浆活动的产物。综合分析本区火成岩的岩石学、地球化学特征和沉积相与变质变形作用的关系后提出,中条山北段元古宙时期不是大陆裂谷,而是古大陆边缘活动带。中基性岩浆活动是该区元古宙地壳演化的重要组成部分,幔源基性岩浆的底侵导致了陆壳的垂向增生,而两期火山活动则导致了陆壳的水平侧向增生。
The Proterozoic metamorphic and metamorphic igneous rocks in the northern section of the Zhongtiao Mountains belong to the products of the 5th stage of magmatic activity in the 3 major stages. After comprehensively analyzing the petrological and geochemical characteristics and the relationship between sedimentary facies and metamorphism and deformation in igneous rocks in this area, it is suggested that the northern part of Zhongtiao Mountain was not continental rift but active zone on the ancient continental margin. Meso-basic magmatic activity is an important part of the Proterozoic crustal evolution in the area. The underplating of the mantle-derived basic magma resulted in the vertical proliferation of the continental crust, while the two volcanic activities resulted in horizontal lateral proliferation of continental crust .