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按地质省编辑了北美和欧洲波罗的海地区14亿年前的前寒武纪岩石A类古地磁资料。目的是试图建立各个构造省的极移曲线,以便检验加拿大和费诺—萨尔马提地盾的克拉通内部完整性。根据这种见解,由于资料贫乏,对大多数省来说,不可能得出任何结论。有可能提出若干试验性的意见,供以后检验: (1)单条极移曲线满足可利用的北美24亿年前的资料。 (2)从距今22亿年到18亿年,在苏必利尔省(十南方省和怀俄明省)和邱吉尔省(十斯拉夫省和拉布多省)之间形成威尔逊环。 (3)单条极移曲线满足了怀俄明省和苏必利尔省的资料。 (4)就每个省来说,有些资料不易适合任一简单极移曲线型式。
According to the Ministry of Geology edited Precambrian A Class A paleomagnetic data from North America and the Baltic region of Europe 1.4 billion years ago. The aim was to try to establish the polar curve for each tectonic province in order to test the internal integrity of the craton in Canada and the Feyno-Salmati shield. Based on this opinion, it is impossible for most of the provinces to draw any conclusions due to the paucity of information. It is possible to make a few tentative observations for later examination: (1) A single pole-shift curve satisfies available North American 2.4 billion-year-old data. (2) From 2.2 billion years to 1.8 billion years ago, the Wilson Ring was formed between the provinces of Superior (Ten Southern and Wyoming) and Churchill (Tensev and Labrador). (3) A single polar curve satisfies the data of Wyoming and Superior. (4) For each province, some data do not fit well with any simple polar curve.