Silva-Arias, A.; Páez-Acuña, L. A.; Gómez-Gutiérrez, P. D.; Rincón-Martínez, D. Petrographic Study and Possible Sources of the San Cayetano Formation Basal Clasts to the South of the San Jacinto Fold Belt, North of Colombia. Bol. Geol. 2019, 41, 15-28.