This book presents the qualitative interpretation of geophysical data in the region that encompasses the Natal and João Câmara sheets, located in the São José do Campestre Massif of the Borborema Province - NE Brazil, using the gravimetric method as a research tool. A geological-geophysical correlation was sought aiming at the identification of the structures in depth, in the area of the João Câmara sheet, and the delimitation of the plutonic bodies, in the domain of the Natal sheet.