Isotopic constraints on Davis bank, Vitória-Trindade Ridge: A Revised Petrogenetic Model

Interpretation of High-Resolution Remote Sensing Data for Plio-Pleistocene Tectonic Structures Studies in the Trindade Island Volcanic Building, South Atlantic Ocean, Brazil

“…In southeast Brazil, during Atlantic Ocean overture, several fracture zones were formed and extended continental inland forming preferential zones for magma ascending [20]. These structures supported magma ascending and generation and are associated with a complex involvement with an orogenic process starting in the Pangea fragmentation, going through the Brasiliano Orogeny and Gondwana breakup [21]. These authors also claimed for a shallow mantle plume in a convective system responsible for ascending hybrid metasomatized melt homogenized prior to eruption from a multivariate mantle reservoir, with elemental chemical imprint from ancient subducted oceanic slabs, and delaminated SLCM [22].…”

“…This ridge extends for about 1100 km, from the Besnard Bank and the Vitória Seamount south of Abrolhos Volcanic Complex (Figure 1). These submarine banks, seamounts, and guyots, with some of them presenting flat-topped shape, for example, Davis Bank located less than −100 m from actual sea level, rising from -5000 m from the continental slope and foot ridge [7,17,21,50,70,71]. The ridge is wider toward the west, due to the combination of the banks and seamounts by the algae and bryozoan carbonate reefs development [11,73,74].…”