Estudio comparado de la evolución e inversión de distintas cuencas mesozoicas de la Placa Ibérica
1998; Issue: 24 Linguagem: Inglês
ISSN
2173-6545
AutoresAntonio María Casas Sáinz, ́Ángel Luis Cortés Gracia, Carlos L. Liesa, Ana Rosa Soria de Miguel, Pedro Terrinha, José Carlos Kullberg, R. B. Rocha,
Tópico(s)Archaeological and Geological Studies
ResumoThe marginal zones of the Maestrazgo Basin (Las Parras and Galve basins) and the Algarve Basin show a similar evolution during basin formation (mainly Jurassic and Early Cretaceous) and inversion (Oligocene-Early Miocene). Common features between the two basins are the control of sedimentation during extension by basement normal and transfer faults (NW-SE and NE-SW) and the complete inversion during the Tertiary accomodated by basement-involved E-W thrusts, preserving the extensional geometry with non-reactivated normal faults at the thrusts hanging-walls. Extensional structures in the Las Parras and Calve basins are consistent with a roughly N-S oriented extension (locally NE-SW and NW-SE, perpendicular to the main normal faults). Thrusts show an overall E-W direction compatible with a near N-S shortening between the Late Eocene and the Early Miocene. Extension in the Algarve Basin was accomodated by ENE-WSW to NE-SW late Variscan faults; NW-SE transfer faults dipping to the Northeast also accomodated some extension and divided the area into sub-basins. Inversion in the Algarve Basin pre-dated deposition ofthe Miocene sediments and was accomodated by S- to S-SE directed thrusts, which cross-cut the main extensional faults
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