Oblique rift geometry of the West Siberian Basin: tectonic setting for the Siberian flood basalts

Allen, M.B.; Anderson, L.; Searle, R.C.; Buslov, M.

Abstract

We use magnetic intensity data to determine the geometries of basalt-filled rifts of the West Siberian Basin. En echelon graben arrays suggest a component of right-lateral, north–south shear during east–west extension (present co-ordinates). Several major exposed faults at the basin margins, mainly within the Altaid orogenic belt, underwent right-lateral strike-slip in the Late Permian–Early Triassic interval. The combined datasets show that the Siberian flood basalts were erupted during right-lateral oblique extension between the Urals and the Siberian craton, centred on a triple junction in the NE of the West Siberian Basin.

Citation

Allen, M., Anderson, L., Searle, R., & Buslov, M. (2006). Oblique rift geometry of the West Siberian Basin: tectonic setting for the Siberian flood basalts. Journal of the Geological Society, 163(6), 901-904. https://doi.org/10.1144/0016-76492006-096

• Journal Article Type: Article
• Publication Date: Dec 1, 2006
• Deposit Date: Mar 13, 2015
• Publicly Available Date: Mar 13, 2015
• Journal: Journal of the Geological Society
• Print ISSN: 0016-7649
• Electronic ISSN: 2041-479X
• Publisher: The Geological Society
• Peer Reviewed: Peer Reviewed
• Volume: 163
• Issue: 6
• Pages: 901-904
• DOI: https://doi.org/10.1144/0016-76492006-096