What's difference between Canadian Shield and Canadian Lowland? Write a short note on it.
Answers
Answer:
Explanation:
The interior plains
Surrounding the Canadian Shield are a number of extensive lowlands underlain by sedimentary rocks: the Arctic lowlands to the north, the Great Lakes–St. Lawrence lowlands to the south and southeast, and the interior, or western, plains to the west.
The Canadian Shield's most notable physical features are thousands of small lakes, thin layers of soil and rolling hills. Lakes are largely the result of glacial erosion during the last ice age.
The Canadian Shield , also called the Laurentian Plateau, is a large area of exposed Precambrian igneous and high-grade metamorphic rocks (geologic shield) that forms the ancient geologic core of the North American continent (the North American Craton or Laurentia). Glaciation has left the area with only a thin layer of soil, through which the composition of igneous rock resulting from long volcanic history is frequently visible.[3] As a deep, common, joined bedrock region in eastern and central Canada, the Shield stretches north from the Great Lakes to the Arctic Ocean, covering over half of Canada and most of Greenland; it also extends south into the northern reaches of the United States. Human population is sparse and industrial development is minimal, but mining is prevalent.