3D Restoration of llerdian to Cuisian features across the Central Pyrenees (Campo-Ainsa area): implications on the Graus-Tremp basin tectono-stratigraphic evolution

• J. Babault ^[3] ; E. Remacha ^[1] ; D. Rouby ^[3] ; O. Oms ^[1] ; M. de Urreiztieta ^[4] ; J. Dinarès-Turell ^[2] ; H. Eichenseer ^[4] ; T. Nalpas ^[3]
  1. [1] Universitat Autònoma de Barcelona

     Universitat Autònoma de Barcelona

     Barcelona, España

     
  2. [2] Istituto Nazionale di Geofisica e Vulcanologia

     Istituto Nazionale di Geofisica e Vulcanologia

     Roma Capitale, Italia

     
  3. [3] Géosciences Rennes, CNRS
  4. [4] ELF Exploration & Production

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• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 2, 2000 (Ejemplar dedicado a: IV Congreso del Grupo Español del Terciario (Tremp, 19-21 septiembre, 2000)), págs. 33-36
• Idioma: inglés
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• Resumen

  • The construction and restoration of the 3D geometrical model of the studied area, between the Esera and Cinca valleys, allowed us to (!) evaluate the geometrical consistency of the interpretation of the seimic dataset, (2) quantify the finite displacement and rotation fields and (3) validate it with available paleomagnetic data. From this, we suggest a new structural framework for the area, in which a major part of the shortening (80%) and differential rotations between the Mediano anticline and Foradada area (20°) is accommodated by Los Molinos thrust. The latter is showing a strike slip component of at least 7 km +/-2 and corresponds, to a lateral ramp of the South-Central Pyrenean Unit (sensu Seguret, 1972).