| HAL : hal-00671554, version 1 |
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| Tectonophysics 345, 1-4 (2002) 281-298 |
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| Stratigraphic responses to a major tectonic event in a foreland basin: the Ecuadorian Oriente Basin from Eocene to Oligocene times |
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| Frédéric Christophoul 1Patrice Baby |
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| (15/02/2002) |
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| The Eocene to Oligocene sediments of the Ecuadorian Oriente Basin record two kinds of second-order stratigraphic response to the tectonic evolution. Lower Eocene shows evidences of local scale syntectonic deposits. This tectonic activity can be related to right lateral convergent movements inverting pre-cretaceous extensional structures. Upper Eocene and Oligocene sediments are integrated as the expression of an isostatic rebound characterizing a basin scale syntectonic deposition. This response is evidenced by a reciprocal architecture of the depositional sequences identified in the sedimentary formations. These data have allowed us to propose a new geodynamic model for the Paleogene evolution of the Oriente Basin. |
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| 1 : | Laboratoire des Mécanismes et Transfert en Géologie (LMTG) |
| CNRS : UMR5563 – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III – Institut de recherche pour le développement [IRD] : UMR154 | |
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| Domaine | : | Planète et Univers/Sciences de la Terre/Géomorphologie |
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| Ecuador – Tectonics – Sedimentation – Reciprocal stratigraphy – Retroarc-foreland basin |
| hal-00671554, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00671554 | |
| oai:hal.archives-ouvertes.fr:hal-00671554 | |
| Contributeur : Frédéric Christophoul | |
| Soumis le : Vendredi 17 Février 2012, 16:37:41 | |
| Dernière modification le : Vendredi 17 Février 2012, 16:37:41 | |