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Geo-Marine Letters

, Volume 17, Issue 1, pp 12–20 | Cite as

Synthesis of the crustal structure of the transform continental margin off Ghana, northern Gulf of Guinea

  • R. A. Edwards
  • R. B. Whitmarsh
  • R. A. Scrutton

Abstract

 Results of a detailed geophysical transect across the transform continental margin off Ghana, at the eastern end of the Romanche Fracture Zone in the Equatorial Atlantic, are presented. Seismic refraction, single-channel seismic reflection, gravity, and magnetic data were collected, and seismic, gravity, and magnetic models along the transect are shown. The 6- to 11-km-wide ocean–continent transition (OCT) is characterized by a high-velocity, high-density, high-magnetization crustal zone. The models show no evidence for any underplating of the continental crust adjacent to the margin but minor melting and intrusion of the continental crust may have occurred in the vicinity of the OCT.

Keywords

Reflection Refraction Continental Crust Continental Margin Fracture Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • R. A. Edwards
    • 1
  • R. B. Whitmarsh
    • 1
  • R. A. Scrutton
    • 2
  1. 1.Institute of Oceanographic Sciences Deacon Laboratory, Wormley, Godalming, Surrey GU8 5UB, UKGB
  2. 2.Department of Geology and Geophysics, Grant Institute, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, UKGB

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