The basalt samples at Paraná and Etendeka have an age of about 132 Ma. Indirectly, the rifting and extension are probably the origin of the Paraná and Etendeka traps and it could be the origin of the Gough and Tristan da Cunha Islands as well, as they are connected by the Walvis Ridge (Gough/Tristan hotspot). The seamounts of the Rio Grande Rise (25°S to 35°S) go eastwards from the Paraná side and in 2013 were assessed as being part of the traps system following recovery of samples. Sources are still unclear, however, as to whether this site has been the subject of what may have been the single largest explosive volcanic eruption in Earth's history (List of largest volcanic eruptions).
^Courtillot, Vincent E.; Renneb, Paul R. (January 2003). "Sur l'âge des trapps basaltiques (On the ages of flood basalt events)". Comptes Rendus Geoscience335 (1): 113–140. doi:10.1016/S1631-0713(03)00006-3.
^Scott E. Bryan; Ingrid Ukstins Peate, David W. Peate, Stephen Self, Dougal A. Jerram, Michael R. Mawby, J.S. Marsh, Jodie A. Miller (2010). "The largest volcanic eruptions on Earth". Earth-Science Reviews102: 207. doi:10.1016/j.earscirev.2010.07.001.Cite uses deprecated parameter |coauthors= (help);|accessdate= requires |url= (help)
Peate DW (1997). "The Parana-Etendeka Province". In Mahoney JJ and Coffin MF. Large Igneous Provinces: continental, oceanic, and planetary flood volcanism. Geophysical Monograph 100. Washington, DC: American Geophysical Union. pp. 217–245.