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Integrated Paleomagnetism and U㏄b Geochronology of Mafic Dikes of the Easter

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发表于 2018-4-13 11:59:06 | 显示全部楼层 |阅读模式
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This article reports the first joint paleomagnetic and U-Pb geochronologic study of Precambrian diabase dikes in the Anabar Shield and adjacent Riphean cover of Siberia. It was undertaken to allow comparison with similar published studies in Laurentia and to test Proterozoic reconstructions of Siberia and Laurentia. An east-trending Kuonamka dike yielded a provisional U-Pb baddeleyite emplacement age of 1503+/-5 Ma and a virtual geomagnetic pole at 16 degrees S, 221 degrees E (dm=17&j0;, dp=10&j0;). A paleomagnetic pole at 6 degrees N, 234

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 楼主| 发表于 2018-4-13 17:38:00 | 显示全部楼层
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