The Late Neoproterozoic to Early Paleozoic Jaibaras Basin is located between the southeastern margin of the Medio Coreaú Domain (MCD) and northwestern edge of the Cear a Central Domain (CCD) of the Borborema Province, Northeastern Brazil, which is also the location of the main axis of the Transbrasiliano Lineament. The lower volcano-sedimentary rocks in the Jaibaras Basin are composed of two lower Vendian-Cambr...