oil well in mustard field, Saskatchewan
Pumping oil from a well in a field of mustard on the Great Plains in western Saskatchewan, near Maidstone.
Interior Lowlands
region, North America
Also known as: Interior Plains
Interior Lowlands, the broad, generally flat areas of the central part of the North American continent. The name is used in regional geologic and physiographic descriptions of North America and the conterminous United States. From the tectonic view, the continental Interior Lowlands are areas largely undisturbed by mountain building in past geologic time. They extend from central Saskatchewan, in Canada, south to the rim of the Coastal Plain and are bounded by the Great Plains...