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

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.

Publication Details

  • Type

    Journal Article

  • Title

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

  • Year

    2006

  • Author(s)

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

  • Journal

    Journal of the Geological Society, London

  • Volume

    163

  • Issue

    6

  • Page(s)

    901-904

  • URL

    http://dx.doi.org/10.1144/0016-76492006-096

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