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Neoproterozoic evolution of Rodinia; constraints from new paleomagnetic data on the western margin of the Siberian Craton

D. V. Metelkin, V. A. Vernikovsky and A. Yu. Kazansky
Neoproterozoic evolution of Rodinia; constraints from new paleomagnetic data on the western margin of the Siberian Craton (in Geodynamic evolution of the Central Asian mobile belt; from ocean to continent, E. V. Sklyarov (editor))
Russian Geology and Geophysics (January 2007) 48 (1): 32-45

Abstract

The paper summarizes paleomagnetic results obtained from the Neoproterozoic rocks of the western margin of the Siberian craton. On the basis of the obtained paleomagnetic poles and available paleomagnetic data for the Precambrian of Siberia, a new version of the Neoproterozoic segment of the apparent polar wandering path (APWP) is proposed for the craton and is compared with the Laurentian APWP. The superposition of these paths suggests that in the Neoproterozoic the southern margin of the Siberian craton (in modern coordinates) faced the Canadian margin of Laurentia. Most likely, in the end of the Mesoproterozoic and during the Neoproterozoic the Siberian craton and Laurentia were connected to form the supercontinent Rodinia. At 1 Ga the western margin of the Siberian craton was a northern (in modern coordinates) continuation of the western margin of Laurentia. The available paleomagnetic data on Laurentia and continental blocks of Eastern Gondwana (Australia, Antarctica, India, South China) and the proposed APWP trend allowed a new model for the breakup of this segment of Rodinia. Analysis of a total of the data available suggests that strike-slip movements on the background of the progressive opening of the oceanic basin between Siberia and Laurentia were predominant in the south of the Siberian craton during the Neoproterozoic. Similar kinematics is typical of the western margin of Laurentia, where strike-slip motions are probably associated with the progressive opening of the ocean basin between Laurentia and eastern Gondwana.


ISSN: 1068-7971
Serial Title: Russian Geology and Geophysics
Serial Volume: 48
Serial Issue: 1
Title: Neoproterozoic evolution of Rodinia; constraints from new paleomagnetic data on the western margin of the Siberian Craton
Title: Geodynamic evolution of the Central Asian mobile belt; from ocean to continent
Author(s): Metelkin, D. V.Vernikovsky, V. A.Kazansky, A. Yu.
Author(s): Sklyarov, E. V.editor
Affiliation: Russian Academy of Sciences, Siberian Division, V. Sobolev Institute of Geology and Mineralogy, Novosibirsk, Russian Federation
Affiliation: Russian Academy of Sciences, Institute of the Earth's Crust, Irkutsk, Russian Federation
Pages: 32-45
Published: 200701
Text Language: English
Publisher: Allerton Press, New York, NY, United States
Accession Number: 2018-095181
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Based on Publisher-supplied data
N42°00'00" - N84°00'00", W141°00'00" - W52°00'00"
N50°00'00" - N80°00'00", W170°00'00" - E60°00'00"
N52°30'00" - N75°00'00", E82°00'00" - E139°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
Update Code: 201851
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