--> ABSTRACT: Cenozoic Deformation Front Evolution, Depocenter Distribution and Paleogeography of the Magdalena Valley, Eastern Cordillera and Llanos Basin of Colombia. Implications for Reservoir Distribution, by Mora Bohorquez, Andres R.; Reyes-Harker, Andres ; Ruiz, Carlos; De la Parra, Felipe ; Rodriguez, Guillermo; Caballero, Victor; Rojas, Luis Ernesto; Lopez, Cristina; Moreno, Nestor R.; Parra, Mauricio; Ramirez Arias, Juan Carlos ; Quintero, Isaid; Mora, Jose Pedro; #90142 (2012)

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Cenozoic Deformation Front Evolution, Depocenter Distribution and Paleogeography of the Magdalena Valley, Eastern Cordillera and Llanos Basin of Colombia. Implications for Reservoir Distribution

Mora Bohorquez, Andres R.*1; Reyes-Harker, Andres 1; Ruiz, Carlos 1; De la Parra, Felipe 1; Rodriguez, Guillermo 1; Caballero, Victor 1; Rojas, Luis Ernesto 2; Lopez, Cristina 2; Moreno, Nestor R.1; Parra, Mauricio 1; Ramirez Arias, Juan Carlos 1; Quintero, Isaid 1; Mora, Jose Pedro 1
(1) ECOPETROL-ICP, Piedecuesta, Colombia.
(2) ECOPETROL, Bogota, Colombia.

A wealth of new geochronologic and thermocronologic data together with seismic information, biostratigraphy and surface geology was used to calibrate the depocecenter evolution compared with the position of the deformation front in the Eastern Andes and adjacent Llanos foreland of Colombia. We recognize a systematic evolution of the deformation front starting in the Late Cretaceous which pushes the depocenter to the west except during the times of tectonic quiescence like the Mid-Eocene. Rates of shortening and sedimentation correlate in different areas of the foreland showing an increase in rates with peaks during the latest Neogene. The combination of multiple techniques provides a unique opportunity to callibrate and assess the presence of distinct tectonic phases and correlate it with sandy or shaly deposition in the foreland. These phases are Paleocene to Early Eocene tectonic activity to the west; Mid Eocene tectonic quiescence, Late Eocene to Early Miocene tectonic activity, Mid Miocene tectonic quiescence and peak tectonism during the Late Miocene to recent times. So far few foreland basins allow this resolution in the correlation between tectonism, depocenter evolution and shaly or sandy deposition.

 

AAPG Search and Discovery Article #90142 © 2012 AAPG Annual Convention and Exhibition, April 22-25, 2012, Long Beach, California