![Pressure creates heat
Some metals merge
and steel in strength
Others melt their separate ways](https://i0.wp.com/www.neilmeili.com/wp-content/uploads/2020/04/Smeltering-in-Place.jpg?resize=600%2C600)
Smeltering in Place
![Pressure creates heat
Some metals merge
and steel in strength
Others melt their separate ways](https://i0.wp.com/www.neilmeili.com/wp-content/uploads/2020/04/Smeltering-in-Place.jpg?resize=600%2C600)
Photo: Giselle Forest
Photo Credit M. Dorsey Cartwright
Image by Shutterbug75 from Pixabay
Photo by Mary Rebecca Elliott on Unsplash
The Canadian Shield is a plateau that covers approximately half of Canada, as well as most of Greenland and a portion of the northern United States. It is the oldest part of the North American plate and the largest formation of exposed Precambrian rock in the world https://www.reference.com/science/canadian-shield-dbf9122ad81cba72