One of the most important processes of heat generation from the Earth's interior is the radioactive decay of isotopes. The main hosts of the major radiogenic elements U, Th and K in the crust are granitoids. The Sierras de Córdoba are formed of dissimilar granitic intrusions emplaced by a series of magmatic events that occurred during the Paleozoic. The different granitoids are classified as A-type, I-type, and S-type, and there is also a magmatic expression corresponding to the Famatinian period which exhibits TTG-type characteristics. In this work, the geochemical concentrations of the radiogenic elements of the granitic intrusions making up the Sierras de Córdoba were compiled in a single database. The radiogenic heat production of the Sierras de Córdoba granitoids was evaluated, making this the first study of radiogenic heat generation in the area. The radiogenic heat production showed variability for the different events, with the highest values found in Achalian magmatism and early Carboniferous magmatism, which are represented by A-type granitoids. The Capilla del Monte pluton has the highest heat production rate, with a value of 4.54 ± 1.38 µW/m3. The lowest values were found in the TTG-type granitoids and in the S-type granitoids, all of which belong to the Famatinian magmatic event. The range of values for this magmatic event goes from 0.26 ± 0.05 µW/m3 for the San Agustin pluton to 1.19 ± 0.50 µW/m3 for the La Playa pluton. An empirical ternary model is presented for the Sierras de Córdoba that involves the concentrations of the elements U, Th and K, and the radiogenic heat production, with a distinction for the petrogenetic types according to the S-I-A-M classification. The thermal manifestations located on the Capilla del Monte pluton could be related to the radioactive heat generation of the intrusion, involving both the neotectonic activity of the area and the radiogenic heat production. The results provide new opportunities for studying temperature variation within some of these intrusions and to evaluate the geothermal potential of the granitoids of Córdoba.

La caverna del Valle de Los Lisos conforma el cierre de una cuenca hidrográfica de aproximadamente 133 hectáreas, ubicada en el macizo Los Gigantes del batolito de Achala, en la Provincia de Córdoba, en la parte central de Argentina. Se compone de una serie de intrincados pasadizos desarrollados en litología granítica, con 20 metros de avance horizontal en sentido Norte-Sur y 25 metros de descenso total. Por su nivel inferior circula el arroyo que drena la cuenca. De acuerdo con las observaciones realizadas, se propone un modelo genético-evolutivo de la caverna que es consistente con la evolución geomorfológica regional de las Sierras de Córdoba, y consta de tres etapas luego del emplazamiento del cuerpo intrusivo: 1) Desarrollo de un perfil de meteorización profundo que condiciona la formación de un paleo-relieve con predominio de una morfología abochonada. 2) A partir de un escarpe mixto (erosivo y estructural), la generación de la cuenca hidrográfica que alimenta el cauce que circula a través de la caverna. 3) Formación de las galerías principales en sucesivas fases de erosión.

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