Late Riphean alkaline magmatism in the western margin of the Siberian Craton: A result of continental rifting or accretionary events?

• Published in: Doklady earth sciences Vol. 419; no. 1; pp. 226 - 230
• Main Authors: Vernikovsky, V. A., Vernikovskaya, A. E., Sal’nikova, E. B., Berezhnaya, N. G., Larionov, A. N., Kotov, A. B., Kovach, V. P., Vernikovskaya, I. V., Matushkin, N. Yu, Yasenev, A. M.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.03.2008; Springer Nature B.V
• Subjects: Accretion; Alkalies; Earth and Environmental Science; Earth Sciences; Geology; Magma; Rifting; Studies; Siberia; Russia; DOKLADY Earth Science; Siberian Craton; Alkaline Rock; Continental Rift; Rodinia
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X08020086

Magmatic evolution in the western margin of the Siberian Craton has attracted the attention of many specialists in the context of debatable problems concerning the formation and breakdown of the Meso- and Neoproterozoic Rodinia supercontinent, the evolution of the Paleoasian ocean, and the origin of the Central Asian Foldbelt. The evolution of the Late Riphean and Vendian alkaline igneous complexes occupies a special place in this problem. According to the paleo-reconstruction by Yarmolyuk et al., these complexes are traced not only along the western and southern margins of the Siberian Craton, but also in North America (Laurentia). Such complexes are commonly regarded as products of anorogenic conditions related to plumes and/or continental rifting. However, models of accretion processes, when a subducted plate reaches the asthenosphere and generates a new alkaline magma source, are also discussed in the literature.