A Submarine ridge no deeper than 600 ft (a hundred and eighty metres) connects the island physically with North America. Structurally, Greenland can be an extension of the Canadian Shield, the rough plateau of the Canadian North that may be built up of challenging Precambrian rocks. If you do not https://pyvrlhd.dekaronwiki.com/329773/not_known_factual_statements_about_greenland_flight