1887

Abstract

Summary

Thick basalts are a major challenge for conventional seismic imaging on the Faroe-Shetland Margin. However, gravity and magnetic data record variations in the density and susceptibility of the entire crust. Consequently, the thick basalt piles that are shallow in the section do not hinder the ability to detect deeper features. The principal aim of this study was to investigate the crustal architecture of the Faroe-Shetland Margin, using a combination of high resolution gravity and magnetic data, seismic data and horizons and published information. By combining seismic data with gravity and magnetic data, the strengths of all three data types were exploited; seismic data were used to constrain the shallow geology so that the deeper structure of the margin could be investigated by gravity and magnetic modelling. A network of 2D gravity and magnetic models based on seismic lines provided by PGS, are used to determine the configuration of the basement beneath the Faroe-Shetland Margin. Greater insight into the depth of basins and the timing of rifting is gained, and a model of asymmetric simple shear is proposed for the area.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20141069
2014-06-16
2024-04-19
Loading full text...

Full text loading...

References

  1. Coward, M.., J. F.Dewey, M.Hempton, and J.Holroyd
    [2003], Tectonic evolution, in Millenium Atlas: petroleum geology of the central and northern North Sea, edited by D.Evans, C. G.Graham, A.Armour, and B. P, Geological Society of London.
    [Google Scholar]
  2. Gernigon, L., C.Gaina, O.Olesen, P. J.Ball, G.Péron-Pinvidic, and T.Yamasaki
    [2012], The Norway Basin revisited: From continental breakup to spreading ridge extinction, Marine Peroleum Geology, 35, 1–19.
    [Google Scholar]
  3. Maus, S., J. D.Fairhead, and N.Mogren
    [2008], EMAG3: A 3-arc-minute resolution global magnetic anomaly grid compiled from satellite, airborne and marine magnetic data, in SEG Las Vegas 2008 AGM, pp. 764–768.
    [Google Scholar]
  4. Morgan, R., and C.Murphy
    [1998], The Use of Potential Fields in the Search for Potential Fields in the Faroe-Shetland Area, SPE Reservoir Evaluation & Engineering, 1, 476–484.
    [Google Scholar]
  5. Passey, S., and K.Hitchen
    [2011], Cenozoic (igneous), in Geology of the Faroe-Shetland Basin and adjacent areas, edited by J. D.Ritchie, H.Ziska, H.Johnson, and D.Evans, pp. 209–228, British Geological Survey, Faroese Earth and Energy Directorate.
    [Google Scholar]
  6. Ritchie, J. D., H.Ziska, H.Johnson, and D.Evans
    [2011], Structure, in Geology of the Faroe-Shetland Basin and adjacent areas, edited by J. D.Ritchie, H.Ziska, H.Johnson, and D.Evans, pp. 9–70, British Geological Survey, Faroeses Earth and Energy Directorate.
    [Google Scholar]
  7. Sandwell, D. T., and W. H. F.Smith
    [2009], Global marine gravity from retracked Geosat and ERS-1 altimetry: Ridge segmentation versus spreading rate, Journal of Geophysical Research, 114 [B1]
    [Google Scholar]
  8. Wernicke, B.
    [1985], Uniform normal-sense simple shear of the continental lithosphere, Canadian. Journal of Earth Science., 22, 108–125.
    [Google Scholar]
  9. White, R., and D.McKenzie
    [1989], Magmatism at Rift Zones: The Generation of Volcanic Continental Margins, Journal of Geophysical Research, 94 [B6], 7685–7729.
    [Google Scholar]
  10. White, R. S., J.Fruehn, K. R.Richardson, E.Cullen, W.Kirk, and C.Latkiewicz
    [1999], Faeroes Large Aperture Research Experiment [FLARE]: imaging through basalt, in Petroleum Geology of Northwest Europe and Global Perspectives: Proceedings of the 5th Conference, edited by A. J.Fleet and S. A. R.Boldy, pp. 1243–1252, Geological Society of London.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20141069
Loading
/content/papers/10.3997/2214-4609.20141069
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