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通过对原岩建造、变质作用、ｐＴｔ轨迹和εＮｄ（ｔ）值等综合研究，提出迁安和怀安为两个不同时代不同性质的陆壳，遵化和崇礼为两个不同性质的深变质绿岩带，遵化为裂谷型绿岩带而崇礼为岛弧型绿岩带．２．７Ｇａ之前受地幔柱活动的影响，导致了上地幔的不均一性和ＴＨ１和ＴＨ２两类拉斑玄武岩的紧密共存．２．７Ｇａ之后从地幔柱体制向板块体制转化，造成了冀西北岛弧型造壳事件和碰撞型变质作用
Based on the comprehensive study of the original rock formation, metamorphism, pTt trajectory and εNd (t) values, it is proposed that Qian’an and Huai’an are two different continental crusts of different ages. Zunhua and Chongli are two deep Metamorphic greenstone belt, Zunhua rift type greenstone belt and Chongli island arc type greenstone belt. The mantle plume activity before 2.7Ga resulted in the heterogeneity of the upper mantle and the tight coexistence of two types of tholeiite basalts TH1 and TH2. After 2.7Ga, it transformed from mantle plume to plate system, resulting in the arc-type crustal event and collision metamorphism