Question

The Canadian shield in north America is an erosional plain true or false​

Answer 1

Answer:

Answer:The Canadian Shield is the principal area of North America where rocks of Precambrian age (i.e., those that are more than 542 million years old) are exposed at the surface. The shield was rifted apart between Canada and Greenland by seafloor spreading in the Labrador Sea and in Baffin Bay between 90 and 40 million years ago. The rift subsequently moved to the east of Greenland, forming the Reykjanes Ridge that now separates the North American plate from the European plate. The Greenland Shield is largely ice-covered. At intervals during the past 2.5 million years, the Canadian Shield was also a centre of glacial ice accumulation from which continental ice sheets advanced southward repeatedly

Answer 2

The Canadian Shield once had jagged peaks, higher than any of today's mountains, but millions of years of erosion have changed these mountains to rolling hills. ... The metamorphic base rocks are mostly from the Precambrian (between 4.5 billion and 540 million years ago) and have been repeatedly uplifted and eroded.

false