1887

Abstract

Summary

Salt tectonics is known to be an important control on the structural configuration of many continental margins. It is a critical mechanism that influences syn-deformational sedimentation and depositional style and has a significant impact on potential reservoir distribution, fluid migration pathways and trap formation.

This study adopts an integrated seismic stratigraphic interpretation and forward modelling approach, using a Discrete-Element Technique, to study salt-related deformation with the aim of characterizing and modelling salt tectonics and associated sedimentation on the Offshore Agadir Basin of Morocco, an area of recent renewed exploration interest.This margin is highly structured following remobilisation of underlying Triassic syn-rift salt, and interpretation of a regional 2D seismic grid has allowed the identification of at least three different structural styles: 1) a southern area with upright tear-drop diapirs and adjacent minibasins, 2) a central area dominated by large allochthonous salt tongues and sheets, and 3) a northern section with well-defined extensional, transitional and contractional domains of salt tectonics due to the lower volume of salt that is affected by paleovolcanoes. The integration of seismic interpretation with numerical modelling affords a better understanding of the margin evolution, especially of how the complex allochthonous salt features developed and their effects to sedimentation patterns.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201601648
2016-05-31
2020-05-26
Loading full text...

Full text loading...

References

  1. Finch, E., Hardy, S. and Gawthorpe, R. L.
    [2003] Discrete element modelling of contractional fault-propagation folding above rigid basement fault blocks. Journal of Structural Geology25, 515–528.
    [Google Scholar]
  2. [2004] Discrete element modelling of extensional fault-propagation folding above rigid basement fault blocks. Basin Research16, 489–506.
    [Google Scholar]
  3. Hardy, S. and Finch, E.
    [2005] Discrete-element modelling of detachment folding. Basin Research17, 507–520
    [Google Scholar]
  4. [2006] Discrete-element modelling of the influence of cover strength on basement involved fault-propagation folding. Tectonophysics415, 225–238.
    [Google Scholar]
  5. Tari, G., Molnar, J., Ashton, P. and Hedley, R.
    [2002] Are West Africa deepwater salt tectonics analogous to Gulf of Mexico?Oil and Gas Journal100, 73–82.
    [Google Scholar]
  6. Tari, G., Brown, D., Jabour, H., Hafid, M., Louden, L. and Zizi, M.
    [2012] The conjugate margins of Morocco and Nova Scotia, Canada. In: Roberts, D. G. & Bally, A. W. (eds) Phanerozoic Passive Margins, Cratonic Basins and Global Tectonics Maps.Elsevier, Amsterdam, 285–323.
    [Google Scholar]
  7. Tari, G. and Jabour, H.
    [2013] Salt tectonics along the Atlantic margin of Morocco. In: Mohriak, W. U., Danforth, A., Post, P. J., Brown, D. E., Tari, G. C., Nemcok, M. and Sinha, S. T. (eds) Conjugate Divergent Margins. Geological Society of London, Special Publications, 369, 337–353.
    [Google Scholar]
  8. Schöpfer, M. P. J., Childs, C. and Walsh, J. J.
    [2006] Localisation of normal faults in multilayer sequences. Journal of Structural Geology, 28, 816–833.
    [Google Scholar]
  9. Schuster, D. C.
    [1995] Deformation of allochthonous salt and evolution of related salt-structural systems, Eastern Lousiana Gulf Coast. In: Jackson, M. P. A., Roberts, D. G. and Snelson, S. (eds) Salt Tectonics: a global perspective. AAPG Memoir65, 177–198.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201601648
Loading
/content/papers/10.3997/2214-4609.201601648
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error