Stratigraphic responses to a major tectonic event in a foreland basin: the Ecuadorian Oriente Basin from Eocene to Oligocene times

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...

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Bibliographic Details
Published inTectonophysics Vol. 345; no. 1-4; pp. 281 - 298
Main Authors Christophoul, Frédéric, Baby, Patrice, Dávila, Celso
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.02.2002
Elsevier
Subjects
Earth Sciences
Ecuador
Geomorphology
Reciprocal stratigraphy
Retroarc-foreland basin
Sciences of the Universe
Sedimentation
Tectonics
Retroarc-foreland basin
Ecuador
Reciprocal stratigraphy
Tectonics
Sedimentation
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Summary: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.
ISSN:0040-1951
1879-3266
DOI:10.1016/S0040-1951(01)00217-7