The ca. 1.83 Ga Trans‐Hudson orogeny resulted from collision of an upper plate consisting of the Hearne, Rae, and Slave provinces with a lower plate consisting of the Superior province. While the geologic record of ca. 1.83 Ga peak metamorphism within the orogen suggests that these provinces were a single amalgamated craton from this time onward, a lack of paleomagnetic poles from the Superior province following Trans‐Hudson orogenesis has made this coherency difficult to test. We develop a high‐quality paleomagnetic pole for northeast‐trending diabase dikes of the post‐Penokean orogen East‐Central Minnesota Batholith (pole longitude: 265.8°; pole latitude: 20.4°; A₉₅: 4.5°; K: 45.6 N: 23) whose age we constrain to be 1,779.1 ± 2.3 Ma (95% CI) with new U‐Pb dates. Demagnetization and low‐temperature magnetometry experiments establish dike remanence be held by low‐Ti titanomagnetite. Thermochronology data constrain the intrusions to have cooled below magnetite blocking temperatures upon initial emplacement with a mild subsequent thermal history within the stable craton. The similarity of this new Superior province pole with poles from the Slave and Rae provinces establishes the coherency of Laurentia following Trans‐Hudson orogenesis. This consistency supports interpretations that older discrepant 2.22–1.87 Ga pole positions between the provinces are the result of differential motion through mobile‐lid plate tectonics. The new pole supports the northern Europe and North America connection between the Laurentia and Fennoscandia cratons. The pole can be used to jointly reconstruct these cratons ca. 1,780 Ma strengthening the paleogeographic position of these major constituents of the hypothesized late Paleoproterozoic supercontinent Nuna.

中文翻译：

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劳伦西亚（Laurentia）早期的古地理：古元古代的东-明尼苏达州中部基底岩层的新限制

该CA。1.83 Ga Trans-Hudson造山运动是由一个由Hearne，Rae和Slave省组成的上板块与一个由Superior省组成的下板块碰撞而成的。而大约ca的地质记录。从造山带内部的1.83 Ga峰变质表明，这些省份从那时起一直是单一的混合克拉通，Trans-Hudson造山后上层省份缺乏古地磁极，使得这种相干性难以测试。我们为后彭诺肯造山带东明尼苏达州岩基的东北趋势辉绿岩堤开发了高质量的古磁极（极经度：265.8°；极经度：20.4°； A _95）：4.5°; K：45.6 N：23）我们将其年龄限制为新的U-Pb日期为1,779.1±2.3 Ma（95％CI）。退磁和低温磁力计实验确定了低钛钛磁铁矿具有的堤坝剩磁。热年代学数据限制了侵入体在初始位置时已冷却到磁铁矿阻挡温度以下，并在稳定的克拉通内部具有较弱的后续热历史。这个新的上级省级极点与奴隶和雷省的极点相似，建立了跨哈德逊造山运动后劳伦西亚的一致性。这种一致性支持这样的解释，即各省之间较早的2.22–1.87 Ga极位置是通过移动盖板构造运动的差异运动的结果。新的极点支持劳伦蒂亚和芬诺斯坎迪亚克拉通之间的北欧和北美连接。极可用于共同重建这些克拉通CA。1,780 Ma增强了假设的古元古代晚期超大陆努纳这些主要成分的古地理位置。