Gaps and currents in the Scotia Arc (Antarctica): the tectonic role

• Fernando Bohoyo ^[2] ; F. Javier Hernández-Molina ^[3] ; Jesús Galindo-Zaldívar ^[4] ; Andrés Maldonado ^[5] ; F. José Lobo ^[5] ; José Rodríguez-Fernández ^[5] ; Anatoly Schreider ^[6] ; Emma Suriñach ^[7] ; J. Tomás Vázquez ^[1]
  1. [1] Instituto Español de Oceanografía

     Instituto Español de Oceanografía

     Madrid, España

     
  2. [2] Istituto Geológico y Minero de España
  3. [3] Universidad de Vigo
  4. [4] Universidad de Granada
  5. [5] Instituto Andaluz de Ciencias de la Tierra (IACT). CSIC/UGR
  6. [6] P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
  7. [7] Universitat de Barcelona

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• 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. 23-24
• Idioma: inglés
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• Resumen

  • The tectonic evolution of the Scotia Arc since Oligocene has developed a complex array of stretched and submerged continental blocks together with small oceanic basins.The evolution of the main southern Scotia Seabasins, which allows deep circulation from Weddell to Scotia seas, reached roughly the present configuration in Middle-Upper Miocene. The most recent oceanic gateways, as Bruce Passage or Deep Basin in Discovery Bank, are deep extensional basins associated with the sinistral transcurrent fault zone of the Scotia-Antarctic plate boundary, formed from Upper Miocene to present.