期刊
MOSCOW UNIVERSITY GEOLOGY BULLETIN
卷 71, 期 1, 页码 8-17出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.3103/S0145875215060046
关键词
paleomagnetism; East European craton; Fennoscandia; Paleoproterozoic; paleomagnetic pole; Nuna/Columbia supercontinent
类别
资金
- Russian Foundation for Basic Research [14-05-000731]
Reliable paleomagnetic poles were calculated for 1.80-1.78 and 1.76-1.75 Ga as a result of the detailed paleomagnetic studies of the Late Paleoproterozoic igneous complexes and the North Ladoga region and Onega structure of the East European craton. According to the new paleomagnetic data, the final assembly of the Superior and Fennoscandia cratons in structure of the Paleoproterozoic Nuna/Columbia supercontinent began at 1.80-1.78 Ga and led to the formation of the Hudsonland megacontinent. Comparison of the coeval poles of 1.76-1.75 Ga of Fennoscandia and Volga-Sarmatia allows reconstruction of the oblique collision among these segments of the East European craton and substantiation of the final assembly at similar to 1.70 Ga.
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