胶东地体中麻粒岩相岩石主要分布于米山断裂以西，而榴辉岩等高压岩石组合主要分布于该断裂以东。通过对米山断裂以西的海阳所、葛家集两地基性麻粒岩岩石学、矿物学和岩石热力学研究后得出：海阳所麻粒岩主要经历了３期变质作用，其ＰＴ演化趋势为顺时针方向；葛家集麻粒岩主要经历了２期变质作用，早期为角闪麻粒岩相，晚期为角闪岩相的退变质作用，其ＰＴ演化趋势亦为顺时针方向。海阳所、葛家集麻粒岩均位于米山断裂带附近，二处麻粒岩形成时的温压及演化的差异说明，米山断裂是一构造混杂带，可能代表华北板块和扬子板块俯冲碰撞时的大致界线 The granulite-facies rocks in the Jiaodong terrane are mainly distributed to the west of the Mishan fault, while the high-pressure rock assemblages such as eclogite are mainly distributed to the east of the fault. Through the petrology, mineralogy and rock thermodynamics of the basic granulites in the Haiyang and Gejiaji formations to the west of the Mishan fault, it is concluded that the granulites in the Haiyang area experienced three stages of metamorphism, and the PT The evolution trend is clockwise. Gejiu granulite mainly experienced metamorphism in the second stage, early hornblende granulite facies, late amphibolite facies retrogressive effect, its evolution trend of P  T is also cis Clockwise direction. Haiyang and Gejiadu granulites are located near the Mishan fault zone. The difference in temperature, pressure and evolution during the formation of two granulites indicates that the Mishan fault is a tectonic belt that may represent the subduction collision between the North China Plate and Yangtze Plate When the general boundary