A geophysical perspective based on well-acquired gravity, magnetic, and radiometric data provides good insights into the basin architectural elements and tectonic evolution of the Rio do Peixe Basin (RPB), an Early Cretaceous intracontinental basin in the northeast Brazilian rift system, which developed during the opening of the South Atlantic. NW–SE-trending extensional forces acting over an intensively deform...
A 4-D monitoring GPR survey was carried out in order to outline the light non-aqueous phase liquid (LNAPL) plume underground during a remediation process in the area of an impacted gas station in Fortaleza, NE Brazil. The complex GPR signature of the plume was well characterized. Low reflectivity zone corresponds to hydrocarbon vapor phase in the vadose zone. Enhanced reflections are associated with free and re...
A geophysical survey was conducted in the central Ceará domain of the Borborema Province (NE Brazil). The aim of this investigation was to find geophysical evidence for the emplacement of the Quixadá batholith, which is a granitic body probably situated in the local extensional site in the oblique collisional regime of the Pan-African/Brasiliano collage. Remote sensing and airborne geophysical data provided inf...
The contamination of groundwater by degradation of buried corpses in cemeteries appears as a common reality in Brazil and worldwide. In the Fortaleza (CE), the Bom Jardim cemetery is a typical example of a contamination threat. The risk is mainly due to the fact that often the population utilizes the groundwater for different purposes. In this investigation, we analyzed the possibility of the Bom Jardim cemeter...
This study investigated the rifting mechanism that preceded the prolonged subsidence of the Paleozoic Parnaíba basin in Brazil and shed light on the tectonic evolution of this large cratonic basin in the South American platform. From the analysis of aeromagnetic, aerogravity, seismic reflection and borehole data, we concluded the following: (1) large pseudo-gravity and gravity lows mimic graben structures but a...
CASTRO, David Lopes de; COSTA, Francisco Cézar Nogueira.Mapas gravimétricos do estado do ceará. Revista de Geologia, FOrtaleza, v.12, n.1, 1999.; O Laboratório de Geofísica de Prospecção e Sensoriamento Remoto (LGPSR) da Universidade Federal do Ceará reuniu e integrou um considerável acervo de dados gravimétricos com o objetivo de gerar mapas gravimétricos atualizados do estado do Ceará e da margem continental ...
OLIVEIRA, Diógenes Custódio de; MARTINS, Guttenberg; BRANCO, Raimundo Mariano Gomes Castelo; et al. Um modelo alternativo para a formação da bacia do Jaibaras: implicações para a evolução final da cadeia brasiliana/pan-africana no noroeste da província Borborema. Revista de Geologia. Fortaleza, v.14, n.1 (2001).; A Bacia do Jaibaras (BJ) é a mais importante exposição de um conjunto de grabens desenvolvidos logo...
Este trabalho apresenta um modelo gravimétrico 2,5D gerado a partir de 315 novas estações gravimétricas levantadas ao longo de uma seção transversal NW-SE com 750 km de extensão na porção setentrional da Província Borborema, NE do Brasil. A modelagem gravimétrica foi aplicada separadamente nas componentes regional e residual do campo gravitacional. A modelagem 2,5D das anomalias regionais revelou que a profundi...