Publication: Modelling of extension and dyking-induced collapse faults and fissures in rifts

This publication is an output of the research conducted by SFA researchers in Uganda on ‘Understanding the structure, permeability and activity of faults in and around the Rwenzori mountains, Albertine rift system’

Koehn, D., Steiner, A. and Aanyu, K. (2018). Modelling of extension and dyking-induced collapse faults and fissures in rifts. Journal of Structural Geology, 118, pp.21-31.

Highlights

  • This contribution presents modelling of fissures and faults in rifts induced by extension and dyking.
  • Faults nucleate as hybrid shear surfaces and migrate upwards as fissures and downwards as shear fractures.
  • Dyking tends to localize faults on top of dykes and produces narrow vertical collapse structures.
  • Collapse structures are rhomboid blocks that form along conjugate fault sets and move down with normal and reverse sense.
  • The most localized collapse structures develop on top of thin and shallowly intruding dykes.

For more information, you can find the publication by using the DOI: https://doi.org/10.1016/j.jsg.2018.09.017