加拿大的拉布拉多北部地区位于劳伦克拉通东北部 ,其基底构造由 3个太古宙地块和缝合它们的 5个古元古代造山带组成。苏必利尔和奈恩两个较大地块汇聚时 ,把一些太古宙的麻粒岩和初始地壳夹在中间 ,称中心带。中心带和其西边苏必利尔的缝合线称为新魁北克造山带 ,与之对应的中心带东边和奈恩的缝合线称为汤加特造山带。和世界上许多克拉通相似 ,拉布拉多北部也是在古元古代末克拉通化的。 The northern part of Labrador, Canada, is located northeast of Laurentikatong and consists of three Archean blocks and five Paleozoic orogenic belts that seamed them. When two of the larger plots of Superior and Nair converged, some Archean granulites and initial crusts were sandwiched between them to form a central belt. The center belt and its west Superior will be referred to as the Neo-Quebec orogenic belt, with its corresponding eastern belt and Nair’s seam known as the Tongat orogen. Similar to many cratons in the world, northern Labrador was also cratoned at the end of the Paleoproterozoic.