Columbia revisited: paleomagnetic results from the 1790 Ma colider volcanics(SW Amazonian Craton, Brazil) - Bispo-Santos, Franklin; D'Agrella Filho, Manoel Souza; Pacca, Igor Ivory Gil; Trindade, Ricardo Ivan Ferreira da; Janikian, Liliane; Elming, Sten-Ake; Silva, Jesué A; Barros, Márcia A. S; Pinho, Francisco (Precambrian Research, 2008)