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Cadena-Mejía, M.P., Córdoba-Ortiz, F. , Kairuz-Hernández, Édgar C., Mejía-Molina, A. and Duque-Valenzuela, N. 2024. Geochemical characterization of the Cretaceous Gachetá Formation, in the Casanare area, and its contribution of hydrocarbon charge as a source rock for petroleum systems present in the Llanos Orientales basin, Colombia. Boletín de Geología. 46, 3 (Nov. 2024), 13–38. DOI:https://doi.org/10.18273/revbol.v46n3-2024001.