SciELO - Scientific Electronic Library Online

 
vol.73 issue3The Pirambóia-Botucatu succession (Late Permian - Early Cretaceous, Paraná Basin, São Paulo and Paraná States): two contrasting eolian systemsFrom sand rich to mixed sand-mud ramp deep-water system: a conceptual model for the apiuna succession (Cambrian, Itajaí valley, Brazil) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765On-line version ISSN 1678-2690

An. Acad. Bras. Ciênc. vol.73 no.3 Rio de Janeiro Sept. 2001

http://dx.doi.org/10.1590/S0001-37652001000300021 

AQUIFER SYSTEMS CHARACTERIZATION IN CAMPOS DOS GOYTACAZES MUNICIPALITY, RIO DE JANEIRO, BRAZIL*

LUCIO C. CAETANO1 AND SUELI Y. PEREIRA2

1Departamento Nacional de Produção Mineral (DNPM), Rio de Janeiro, RJ.
2Instituto de Geociências, UNICAMP, Campinas, SP.

Presented by ANTONIO C. ROCHA-CAMPOS

 

We present a hydrogeological study aimed at defining some aquifer systems and their potential to supply Campos dos Goytacazes Municipality, Rio de Janeiro State, Brazil. Campos dos Goytacazes is the largest municipality of Rio de Janeiro State (4,017.7 Km2) and it is located at 21º45'15''S and 41º19'28''W. The city is 48 km from the Atlantic Ocean, and it is situated on the Campos Sedimentary Basin, close to the delta of the Paraíba do Sul river. The project comprised regional geological studies, 3D aquifer geometry evaluation, and the analysis of the sedimentary environment. These integrated studies and the hydrogeological evaluation 4 aquifer systems are as follows:

(1) Crystalline basement rocks - low potentiality and secondary porosity, with specific capacity values varying from 0.021 to 1.53 m3/h/m;

(2) Emborê Formation - composed by sandstone and shale, is a confined aquifer system with productivity values around 3.5 m3/h/m, and transmissivity of 232.16 m2/day;

(3) Barreiras Formation - composed of sand, clays and silts, is an unconfined to confined (artesian sometimes) aquifer, with productivity values from 0.27 to 10.48 m3/h/m and transmissivities between 6.27 and 2048.20 m2/day, and

(4) Quaternary Delta Aquifer System - composed of continental and marine sediments (residual soils, sand, gravel, clays and silts), with high productivity values (from 0.04 to 132.31 m3/h/m) and high transmissivities (from 245.76 to 9023.62 m2/day). These aquifer systems are a cheap and simple source to supply both urban and rural areas of Campos dos Goytacazes. The aquifer systems are presented on the Hydrogeological Map (scale 1: 200,000). — ( December 8, 2000 )

 

* Supported by FAPESP.

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License