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.

doi:10.1144/0016-76492006-096

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.

Authors

Professor Mark Allen m.b.allen@durham.ac.uk
Head of Department

L. Anderson

R.C. Searle

M. Buslov

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