Instituto Brasileiro de Geografia e Estatística

About the publication - Structural Sub-provinces

In this new volume, third in the Macro-characterization of Brazilian Natural Resources collection, the Geology subject presents what can be considered a complement to the first volume, which is the subdivision of the structural provinces into sub-units, or tectonic domains, called structural sub-provinces. As a result, 97 sub-provinces in the 14 provinces adopted in the first volume, released in 2019, are identified, characterized and discussed.

The compartmentalization into provinces and structural sub-provinces aims at spatially representing the major geo-tectonic events already identified with the sub-provinces in the National Territory, grouping the litho-stratigraphic units directly involved in their formation, or deformation, and geo-dynamic transformation. Such events are directly related to internal dynamics of Earth, more precisely to the movement/interaction of the lithosphere fragments known as tectonic plates, to the resulting formation and/or agglutination of continents, as well as to the opening and/or closure of oceans and continental sedimentary basins over the last 4.5 billion years of the geological history of the planet.