Contourites in the deepwater sequence stratigraphic framework

• Rachel Brackenridge ^[2] ; Dorrik A.V. Stow ^[2] ; F. Javier Hernández-Molina ^[1]
  1. [1] Universidade de Vigo

     Universidade de Vigo

     Vigo, España

     
  2. [2] IPE-ECOSSE, Heriot Watt Univ. Edinburgh
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 11, 2010 (Ejemplar dedicado a: Deep-Water Circulation: Processes & Products. International Congress. Baitona, Pontevedra, Spain. 16 & 17 June 2010), págs. 27-28
• Idioma: inglés
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• Resumen

  • The present contribution represents an important first attempt to place contourite depositional systems firmly within a sequence stratigraphic framework. The model presented builds on earlier work by Diez et al (2008)and is based on many examples of contourite systems from around the world, which collectively show the complexity of controls on deposition and erosion by bottom currents. However, within this complexity we recognise the roleof sea-level in the evolution of contourite systems as follows: LST – Muddy Sheeted Drifts intercalated with basinfloor and slope fans; TST to HST – principle development (progradation and aggradation) of Mounded ElongateDrifts; HST – development of widespread Erosive Surfaces and Sandy Sheeted Drifts. Other controlling factors can significantly modify the distribution and development of contourite elements linked to sea-level variation.