APLICAÇÃO DO MÉTODO AEROMAGNÉTICO E GRAVIMÉTRICO PARA A INVESTIGAÇÃO CRUSTAL DA INFLEXÃO ENTRE A SUB-BACIA TUCANO NORTE E A BACIA DE JATOBÁ, NORDESTE DO BRASIL

Abstract

This study delves into the inflection region between the Tucano Norte Sub-basin and the Jatobá Basin, both of which originated as a result of an aborted rift during the breakup of the Gondwana supercontinent. Remarkably, prior to this study, the connection between the inflection and basement deformation had been underestimated. To address this notable gap in knowledge, we employed state-of-the-art geophysical methods, including magnetic, gravity, and seismic reflection techniques. A pioneering aspect of this study lies in the utilization of synthetic magnetic data to simulate the stitching method process in concatenating projects, which allowed for comprehensive coverage of the entire study area. Moreover, leveraging magnetic data, we meticulously generated thematic maps that were closely correlated with interpretations of seismic sections. In parallel, concerning the gravity data, we used the Bouguer anomaly to estimate the depth of the Moho and subsequently removed its effect to conduct 2.5D gravity modeling. These modeling efforts culminated in the creation of a detailed map of the crystalline basement surface. The meticulous integration of these interpretations revealed geological features intrinsically linked to the inflection and provided substantial evidence of the possible presence of high-density Allochthon body. These results not only enhance our comprehension of the geodynamic processes in this region but also make significant contributions to the understanding of processes associated with the breakup of the Gondwana supercontinent and the rotation of the Sergipe microplate.