Revista Mexicana de Ciencias Geológicas (RMCG) is a joint publication of Instituto de Geología, Centro de Geociencias and Facultad de Ingeniería of the Universidad Nacional Autónoma de México (UNAM), as well as Sociedad Geológica Mexicana, Instituto Nacional de Geoquímica (INAGEQ) and Sociedad Mexicana de Paleontología. It publishes original research papers dealing with any discipline of the Earth Sciences, with emphasis on works from Spanish America. Three-times-a-year publication.