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Schematic cross section of the Llanos Basin showing first the foreland monocline dipping westward and the main petroleum system elements, that is, the reservoirs, the potential source rocks, and the regional top seal. On the left, a stratigraphic colum...
Schematic cross section of the Llanos Basin showing first the foreland monocline dipping westward and the main petroleum system elements, that is, the reservoirs, the potential source rocks, and the regional top seal. On the left, a stratigraphic column of the siliciclastic sequence presents the main formations of the Llanos Basin. The early Paleocene Barcos (sandy) and Los Cuervos (shally) formations are rather thin and, therefore, have not been represented in this schematic column. From AAPG Memoir 114: Petroleum Systems Analysis—Case Studies, [[http://store.aapg.org/detail.aspx?id=1285 Chapter 08]].