Continent Europe and Asia together as a single continent, dubbed "Eurasia". In this model, the world is divided into six continents, with North America and South America considered separate continents. Geologists use the term "continent" in a different manner from geographers. In geology a continent is defined by continental crust: a platform of metamorphic and igneous rock, largely of granitic composition. Some geologists restrict the term 'continent' to portions of the crust built around stable Precambrian "shield", typically 1.5 to 3.8 billion years old, called a craton. The craton itself is an accretionary complex of ancient mobile belts (mountain belts) from
Wings of a Continent Wings of a Continent Wings of a Continent is a 1941 Canadian short documentary film, part of the "Canada Carries On" series of short films by the National Film Board of Canada, produced for the Office of Public Information. The film was directed by Raymond Spottisswoode—father of filmmaker Roger Spottiswoode—and produced by Stuart Legg and narrated by Lorne Greene. Commercial air transportation in Canada began with bush pilots pioneering air routes in the north and Arctic. A new industry was born and within a few years, the air carriers serving the Canadian north became the largest carriers of airborne cargo