Loureiro, E.M.L.; Menezes, P.T.L.; Zalán, P.V.; Heilbron, M. The Tectonic Framework of Parecis Basin: Insights from a Multiphysics Interpretation Workflow. Minerals 2024, 14, 783, doi:10.3390/min14080783.
Loureiro, E.M.L.; Menezes, P.T.L.; Zalán, P.V.; Heilbron, M. The Tectonic Framework of Parecis Basin: Insights from a Multiphysics Interpretation Workflow. Minerals 2024, 14, 783, doi:10.3390/min14080783.
Loureiro, E.M.L.; Menezes, P.T.L.; Zalán, P.V.; Heilbron, M. The Tectonic Framework of Parecis Basin: Insights from a Multiphysics Interpretation Workflow. Minerals 2024, 14, 783, doi:10.3390/min14080783.
Loureiro, E.M.L.; Menezes, P.T.L.; Zalán, P.V.; Heilbron, M. The Tectonic Framework of Parecis Basin: Insights from a Multiphysics Interpretation Workflow. Minerals 2024, 14, 783, doi:10.3390/min14080783.
Abstract
The Parecis Basin is one of the largest intracratonic basins in Brazil. Despite its considerablesize, the basin has yet to be extensively explored, with only five wildcat wells drilled for hydrocarbons.So far, no commercial discoveries have been announced. Regional studies have suggested Paleozoicsedimentation, while recent studies indicate a Neoproterozoic fill. However, no tectonic modelaccurately describes the basin’s development, and no detailed structural map for the entire basinhas been published. The present work presents a new detailed structural map of the Parecis Basinbased on a four-step interpretation workflow integrating seismic and gravimetric data. The first stepincludes converting the public 2D seismic lines to the depth domain. The second step is estimatingthe residual Bouguer anomaly, where the computed residual anomalies should relate to the basin’stectonic features. The third step comprises the 2D forward modeling of the gravimetric anomalies using the 2D seismic interpretation as a constraint. The final step compiled all the interpreted featuresinto our new structural map. This map reveals the top of the basement, forming a complex frameworkof horsts and grabens. Normal faults define the main structural style in the basin. Further, we could recognize thick, high-density bodies embedded in the crystalline basement. These bodies consist of Orosian-Calimian (1.8-1.6 Ga) mafic and ultramafic rocks, which may be a potential source for hydrogen exploration in the basin. Subsequent geophysical and geochemical surveys will assess the hydrogen potential in the area.
Environmental and Earth Sciences, Geophysics and Geology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
