Although the University of Buenos Aires was founded in 1821, it was not until 1865 that geology was taught in its classrooms. The hiring of Pellegrino Strobel, an Italian naturalist, allowed the first Geology classes to be given in the country. These courses were intended for engineering students. Strobel not only taught Geology classes but also organized the first geological expedition of an Argentine scientific institution to the Andes, which resulted in innovative publications. Upon his return to Italy, the classes continued with another Italian professor, Juan Ramorino, until his premature death in 1876. Shortly after, they continued with the first Argentine professor of geology, the engineer Eduardo Aguirre, who taught Geology and Mineralogy courses for 30 years. From 1907 onwards, the courses were taught by Engineer Enrique M. Hermitte, an Argentine who studied at the École Nationale Superieure des Mines in Paris. This marked a profound change, given that in those years Hermitte led the discovery of economically exploitable oil in Comodoro Rivadavia and Neuquén. His courses attracted the first students of geology and within a few years, starting in 1914, the first Argentine doctors in Natural Sciences with a geological orientation graduated at the University of Buenos Aires.