He also made a major contribution to the first Tectonic Map of South America. He was one of the first geologists to introduce and publish on Plate Tectonics in Brazil and thus caused many polemics during debates with the geosynclinal theory-oriented geologists.
In his research, he contributed notably to the creation of the initial Tectonic Map of South America. He was among the first geologists to introduce and publish on Plate Tectonics in Brazil, which caused many discussions and debates with geosynclinal theory-oriented geologists.