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In this study, a bidimensional gravity modelling technique is implemented in Python 2.0, and a bidimensional model is defined by irregular polygons that represent the cristaline basement. Predicted Bouguer anomaly is calculated for the model, also considering that the density contrasts vary in depth on the poligonal model. In order to highlight the residual Bouguer anomaly and compare it with the predicted Bouguer anomaly provided by the method, a polynomial fit were considered and subtracted from the total Bouguer anomaly. With the aim to minimize interpretation ambiguities, log profiles with density information and two seismic lines with details about the basement morphology were required. Two significant results were considered: model 1, based on multi geophysical data; and model 2, based on previous geological information. In conclusion, the incongruities presented in both models suggest that there are significant heterogeneities on basement’s density that results in a negative Bouguer anomaly in a structuraly elevated region.

2D gravity modelling integrated with multi gephysical data to investigate the basement of the southern compartment of Recôncavo basin