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吕梁运动 (1.90～ 1.70Ga)长久以来被认为是华北克拉通最终稳定固结的造山运动 .事实上 ,在古元古代末期华北克拉通以伸展 -裂解构造为主 ,表现为拗拉谷系发育、非造山岩浆活动 (环斑花岗岩、斜长岩、辉长岩、花岗岩类及伟晶岩脉等 )、大规模基性岩墙群侵位以及早期变质基底隆升或退变质构造热事件等 .对已有的大量同位素年代学资料分析后证明 ,这一时期的岩浆侵位与基底构造 -热事件在时间上的分布具有多峰式特点 ,克拉通基底隆升退变质事件滞后于岩浆侵位 ,明显区别于造山带普遍记录的构造变形 -变质 -岩浆侵位的事件序列 .古元古代末期构造格局的重新认识 ,为我国克拉通在元古代超大陆中的再造模式提供了最基本的制约条件 .
The LüLiang movement (1.90 ~ 1.70Ga) has long been considered as the final stable orogeny orogeny of the North China Craton. In fact, the North China craton was dominated by extensional-cracking structures at the end of the Palaeo-Neoproterozoic period, , Non-orogenic magmatism (ringed granite, plagioclase, gabbro, granite and pegmatite, etc.), large-scale basic dyke swarm emplacement and early metamorphic basement uplift or retrogressive tectonic thermal events, etc. After analyzing a large amount of isotopic geochronological data, it is proved that the magmatic emplacement and basement tectono - thermal event in this period have a multimodal distribution over time, and that the cratonic basement uplifting and retrogressive metamorphism lags behind the magmatic intrusion The sequence of tectonic deformation-metamorphism-magma emplacement generally recorded in the orogenic belt is obviously different from that recorded in the orogenic belt.Re-understanding of the structural pattern of the Late Paleoproterozoic provides the most basic Constraints.