Geological Tours
Southeast Rift
It represents an elongate narrow trough of more than 900 km which is composed of a system of taphrogenic basins and grabens that were installed in the Neoproterozoic Ribeira belt during the Cenozoic (55 - 11 Ma).
It was preceded / activated by a series of alkaline magmatic events during the Mesozoic / Cenozoic (82 - 52 Ma).
The alkaline intrusions of this magmatism are nowadays exposed along the main fault lines of the rift (e.g. Passa Quatro (PQ), Itatiaia (IT), Tinguá (TI), Mendanha (MD)).
The central / oriental segment of the rift encompasses the basins of São Paulo (SP), of the Upper Paraíba Valley; Taubaté (TB), Resende (R) and Volta Redonda (VR) and of the Guanabara Graben; Macacu (MC) and Itaboraí – Rainforest Tours / Brazil.