The investigation of the Earth by gravity implies a lot of information about the interior at different scales of observation. This study considered research previously conducted in the area of St. Paul Fracture Zone (ZFSP) Archipelago and St Peter and St Paul (ASPSP), the Equatorial Atlantic Ocean, whose petrological and geochemical data indicate the presence of a thermal anomaly. In this area some geophysical surveys have been conducted, but nothing that would contribute significantly by gravity data. The main objective of this work is the characterization of gravimetric St. Paul Fracture Zone by gravity data, free air anomaly, Bouguer anomaly, the gravity gradient tensor and residual geoid height. As a secondary objective, we found the expression of this thermal anomaly in the field gepotencial. However, the data indicate that the effect of bathymetry on criteria examined is intense in this region near the mid-oceanic ridge. If necessary the confluence of other geophysical methods to detect its expression.
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