f Basement setting in the east edge of the parnaíba basin, using air gravimetric, magnetometric, seismic and land gravity data

This paper presents a joint interpretation of aerial survey data from gravimetry and magnetometry, 2D seismic data and terrestrial gravity data in order to examine the stratigraphic framework and configuration of the basement in the central-eastern Parnaíba Basin in region of Transbrasiliano Lineament north-northeast of Brazil. The main objective of this study is to map the architecture and composition of the basement, the structural, stratigraphic and volcanic rocks, in order to characterize the hydrocarbon prospectivity. The Transbrasiliano Lineament (LTB) is a suture zone of NNE-SSW direction, which reaches 100 km wide, featuring behind the geophysical constrain Parnaíba Basin resulting on zones of crustal weakness reactivated since the Precambrian. The tectonic movement in LTB reflects the evolution of Paleozoic and Mesozoic sedimentary basins along its length. Fairhead et al., 2007, based on aeromagnetic data from Brazil and Northern Africa, considers the LTB as part of the crustal lineament Argentina - Brazil - Algeria (ABA). The workflow includes integrated interpretation of 2D seismic, gravity data and detailed land-scale aerial survey data covering gravimetric and magnetometric methods with imaging and filtering; solutions depth of magnetic basement using Werner deconvolution, Euler technique and half slope of Peters; 2D seismic time and sections depth in the initial links with gravity and magnetic modeling.