Growth of the South Pyrenean orogenic wedge
Article Abstract:
The sediments that were deposited during the thrusting of the South Pyrenean foreland fold-and-thrust belt in Spain were analyzed to characterize the topographic and structural development of the orogen. Reconstruction of the South Pyrenean fold-and-thrust belt based on topographic slope and thrust-front advance indicated the role of internal slope deformation in maintaining the surface slope angle of the orogen. Furthermore, the flexural rigidity of the lower plate regulated the taper angle of the Pyrenean thrust wedge.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1997
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Kinematics around a large-scale oblique ramp, southern Pyrenees, Spain
Article Abstract:
Th Gavarnie thrust sheet of the southern Pyrenees was probably emplaced over an oblique ramp along its western boundary, within the southern Pyrenees. Along the length of the ramp, regional-scale shortening appears constant at about 25% and are accommodated by faulting and the development of regional-scale anticlines in the thrust sheet. As the attitude of the ramp of the Gavarnie thrust fault varies from oblique to frontal, the trend of regional hanging wall fold axes change from zero-180 degrees to about 110 degrees.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1995
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Crustal structure and orogenic material budget in the west central Pyrenees
Article Abstract:
A study was conducted on the crustal structure and orogen of the western central Pyrenees at the boundary between the European and Iberian plates. The structure was analyzed using the ECORS-Arzacq reflection profile and refraction data. Results showed that the structure of the west central Pyrenees is a crustal-scale double tectonic wedge and that the total orogenic contraction is around 75-80 km and occurred between the latest Cretaceous and early Miocene.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1998
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