on this link it is possible to see a geological map of the city and state of rio de janeiro, where in yellow are coastal deposits, in red granitoids and rock formations - and here is the map in large format.  

the paper a reserva da biosfera da mata atlântica no estado do rio de janeiro (the reserve of the biosphere of the atlantic rainforest in rio de janeiro), by denise marçal rambaldi - associação mico-leão-dourado, alceo magnanini - ief, andré ilha - apedem, eduardo lardosa - ief, patrícia figueiredo - semads, and ronaldo fernandes de oliveira - feema, part of the conselho nacional da reserva da biosfera da mata atlântica rua do horto 931 - instituto florestal são paulo, presents a very comprehensive overview of the mountains in rio de janeiro state.