Brazil Eco Adventure Tours
Rainforest - Hiking & Biking - Wildlife

The Phanerozoic Eon can be subdivided into the the Eras Paleozoic (542 - 251 Ma), Mesozoic (251 - 65 Ma) and Cenozoic (65 - 0 Ma).

West Gondwana (containing the prototypes of South America and Africa) breaks up, the South American / Patagonian platform drifts westwards and the South Atlantic opens. In the east, the Nazca Plate subducts the South American Plate giving rise to the Andes. In the west, the Paraná Basin is flooded by voluminous basaltic lava flows and alkaline magmatism in southeast Brazil initiates the formation of the Southeast Rift and the mountain ranges Serra do Mar and Mantiqueira.