The Canadian shields are also known as the Laurentia plateau and are a large area that is exposed to the Precambrian rocks and high-grade metamorphic rocks and is composed of a large volcanic history and a thick layer of soil, and its starches form the north of the great lakes covering half of the Canada.
It has a sparse population, and covers an area of 800,00,00 km square. The Canadian shied are the oldest regions on earth with the dating of 2.5 to 4.2 billion years.
