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 work, he significantly contributed to creating the initial Tectonic Map of South America. He was among the first geologists to present and discuss Plate Tectonics in Brazil, which led to numerous controversies during discussions with geosynclinal theory proponents.