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Cordilleran Section - 97th Annual Meeting, and Pacific Section, American Association of Petroleum Geologists (April 9-11, 2001)

Paper No. 0
Presentation Time: 3:30 PM

NUMERICAL 3D RESTORATION OF EOCENE FEATURES ACROSS THE CENTRAL PYRENEES (CAMPO-AINSA AREA)


BABAULT, J.1, URREIZTIETA, M. de2, ROUBY, D.1, REMACHA, E.3, OMS, O.3 and EICHENSEER, H.2, (1)Géosciences Rennes, CNRS, Campus de Beaulieu 35042 Rennes, Cedex, France, (2)ELF Exploration & Production, CSTJF Avenue Larribau, 64018 Pau, Cedex, France, (3)Dpt. de Geologia (Fac. Ciències), Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, MARC.Urreiztieta@elf-p.fr

The construction and restoration of the 3D geometrical model of the studied area, between the Campo and Ainsa (Central Pyrenees), provided (1) a validation of the geometrical consistency of the interpretation of the seismic dataset, (2) a quantification the finite displacement and rotation fields. The numerical results are consistent with available paleomagnetic data.

From this 3D numerical study, we propose a new structural framework for the area. We suggest that most of the regional shortening (80%) and differential rotations between the Mediano anticline and Foradada area (20°) is accommodated by Los Molinos thrust. The latter is showing a right lateral strike slip component of at least 7 km +/-2 and corresponds, to a lateral ramp of the South-Central Pyrenean Unit (sensu Seguret, 1972).

Session No. 11

T1. 3D Visualization and Geologic Modeling
Monday, 9 April 2001: 1:40 PM-4:30 PM
Geological Society of America Abstracts with Programs. Vol. 33, No. 3, March 2001, p.41
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