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横贯阴山地区峰值温度压力等值线和岩性一构造特点将该区分为4个不同温度—压力—岩性—构造区,即桑干麻粒岩区、集宁副变质岩区、乌拉山 大青山前缘构造区和色尔腾山区。阴山地区经历了新太古代(2.5Ga±)和古元古代(1.9G±)两期重要的构造热事件。色尔腾山区新太古代 P-T轨迹为顺时针,压力由>1500MPa到1000～2000MPa,显示着岛弧环境。桑干区新太古代P-T轨迹为反时针P-T轨迹,为中太古代微古陆岩浆板底垫托特点。古元古代时期两个太古宙古陆(岛弧)碰撞,乌拉山到桑干区太古宙基底向北逆冲抬升,P-T轨迹由1000～1200MPa到500～700MPa降压过程。南部集宁区
This area is divided into four different temperature-pressure-lithology-tectonic zones, namely the Sanggan granulite area, the Jining anhui metamorphic rock area, the Wulashan Daqingshan area Frontal tectonic zone and Serteng area. The Yinshan area experienced two important tectonic thermal events of the Neo-Archaean (2.5Ga ±) and the Paleoproterozoic (1.9G ±). The new Archean P-T trajectory in the Serteng area is clockwise, and the pressure is from> 1500 MPa to 1000 to 2000 MPa, indicating the island arc environment. The P-T trajectory of the Pacific Ocean in the Sanggan region is an anti-clockwise P-T trajectory, which is a characteristic of the magmatite plate mat in the Middle Pacific. During the Paleoproterozoic, two Archean ancient continent (island arc) collisions occurred. The Archean basement of the Wulashan-Sanggan region was thrust northward and the P-T path was depressurized from 1000-1200MPa to 500-700MPa. Southern Jining District