Pacific Ocean closed loop of the andesite line are most of the deep troughs, submerged volcanic mountains, and oceanic volcanic islands that characterize the Pacific basin. Here basaltic lavas gently flow out of rifts to build huge dome-shaped volcanic mountains whose eroded summits form island arcs, chains, and clusters. Outside the andesite line, volcanism is of the explosive type, and the Pacific Ring of Fire is the world's foremost belt of explosive volcanism. The Ring of Fire is named after the several hundred active volcanoes that sit above the various subduction zones. The Pacific Ocean is the only ocean which is almost
Ring of Fire (Northern Ontario) million tonnes of carbon dioxide. On 12 November 2012, Tony Clement was appointed as the lead federal minister on the Ring of Fire and co-chair, with Minister of Aboriginal Affairs and Northern Development Bernard Valcourt, of the Federal Steering Committee (FCS), which represents 15 federal departments. Clement invited Ontario Natural Resources minister Michael Gravelle "to collaborate on projects, community visits, information-sharing, and to hold joint meetings". Aboriginal Affairs and Northern Development Canada (AANDC) led other federal departments and FedNor in the development of "Action Plan for Supporting Community Participation in the Ring of Fire" to help "position First Nations to