Abstract
This study, based on seismic interpretation, documents three examples of the structural styles found in different areas along the Upper Magdalena Valley (UMV). We present two cross sections in the northern area, where the valley is wider: The northernmost section portrays the boundary of the UMV with the Eastern Cordillera, characterized by thrust systems transporting synclines westwards. While the second cross section from the western zone exhibits the characteristics of the boundary with the Central Cordillera, including the basement uplifted by high angle faults and different phases of deformation in the foreland basin. The southernmost cross section, where the valley is narrower, between the Central and Eastern Cordillera, shows the Neiva Syncline dominated by thick-skin deformation and detachment folds with different oil fields associated. Seismic data in the studied segments reveal different tectonic events marked by two important angular unconformities: the early Eocene and the early Miocene unconformities.
Published Version
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