Integration of Gravity Disturbance and Bouguer Disturbance for Geological and Geophysical Mapping in Paraná State, Southern Brazil

Abstract

This article presents a gravity data integration and a regional geophysical overview of the geological framework in the State of Paraná, southern Brazil. For data processing, we used open-source computational tools based on Python libraries from the Fatiando a Terra Project. Data processing included determining theoretical gravity on the physical surface of the Earth, calculating the Gravity Disturbance, modeling topographic masses to obtain the complete Bouguer Disturbance, data gridding using the equivalent source method, and the application of enhancement techniques. The products obtained were compared with previous geological studies, revealing a robust correlation between our results and the main geological characteristics from literature. Some relatively high values of the Bouguer Disturbance indicate important structural features, such as the Paranapanema Block and the Ponta Grossa Arch. Additionally, enhancement techniques highlighted relevant geological structures, in both the Paraná Basin and the Proterozoic orogenic basement. Using the gravity method and open-source tools, this work aims to serve as a reference for future geophysical and geological investigations in the State of Paraná. The gravity maps of the Paraná are a valuable unified database for the scientific community and for future geophysical investigations. These data will be made available in an open repository, facilitating access and encouraging use in subsequent research and practical applications.