Paleomagnetism of Cryogenian Kitoi mafic dykes in South Siberia: Implications for Neoproterozoic paleogeography

Pisarevsky, Sergei A. and Gladkochub, Dmitry P. and Konstantinov, Konstantine M. and Mazukabzov, Anatoly M. and Stanevich, Arkady M. and Murphy, J. Brendan and Tait, Jennifer A. and Donskaya, Tatiana V. and Konstantinov, Innokenty K. 2013. Paleomagnetism of Cryogenian Kitoi mafic dykes in South Siberia: Implications for Neoproterozoic paleogeography. Precambrian Research. 231: pp. 372-382.

Source Title

Precambrian Research

DOI

10.1016/j.precamres.2013.04.007

ISSN

0301-9268

Remarks

NOTICE: This is the author’s version of a work that was accepted for publication in Precambrian Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Precambrian Research, Vol. 231 (2013). doi: 10.1016/j.precamres.2013.04.007

URI

http://hdl.handle.net/20.500.11937/20414

Collection

Curtin Research Publications

Abstract

We present a new paleomagnetic pole of 1.1°N, 22.4°E, A95 = 7.4° from the 760 Ma gabbro-dolerite Kitoi dykes located in the southern part of the Siberian Craton. The pole is supported by contact tests and suggests closer position of Siberia relative to Laurentia at 760 Ma than in Mesoproterozoic. We propose that this closer configuration was achieved by dextral transpressive motion of Siberia relative to Laurentia between 780 and 760 Ma. This motion was probably initiated at the first stage of the Rodinia breakup and is coeval with the 780 Ma Gunbarrel magmatic event of the western Canadian shield.