GEG-1 Lecture 8: Physical Geography 8
Document Summary
Stand like icy watch towers in canada"s far north. In some locations, they measures over 2500 metres in height. Their present-form was shaped in the middle of the mesozoic era when the north american plate moved northward. They contain igneous and metamorphic rocks, but for the most part are composed of sedimentary rock. Younger than the appalachians, and so erosion has not had time to reduce them to rounded hills. Very barren because tress can neither survive the extremely cold winter temperatures, nor grow during the short summer. Vast areas are covered by ice and permanent snow. Resemble the appalachians in composition and contain similar types of minerals: the mineral resources have not been greatly exploited because the region"s remote location makes development too costly when cheaper alternatives exist further south. Stands along the western edge of canada like a great wall. Range after range of mountains separated by plateaus and valleys.
