Opinaca Subprovince Géologie Québec
The Opinaca Subprovince is a metasedimentary subprovince located in the centre of the Superior Province and in the heart of the Eeyou Istchee James Bay territory, Quebec. It lies between the volcanoplutonic La Grande Subprovince to the north and west, and the Opatica Subprovince to the south.