-- It is the Canadian Shield and the rock types are a rich source of metallic minerals such as iron, nickel, copper, zinc, uranium, gold, silver, platinum and molybdenum. The shield is composed of granite and the earth's greatest area of exposed Precambrian rock (igneous and metamorphic rock formed in the Precambrian geological era 500 million years ago).----------- Sedimentary- Sandstone, shale, limestone.---------- http://answers.yahoo.com/question/index?qid=200901...
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-- It is the Canadian Shield and the rock types are a rich source of metallic minerals such as iron, nickel, copper, zinc, uranium, gold, silver, platinum and molybdenum. The shield is composed of granite and the earth's greatest area of exposed Precambrian rock (igneous and metamorphic rock formed in the Precambrian geological era 500 million years ago).----------- Sedimentary- Sandstone, shale, limestone.---------- http://answers.yahoo.com/question/index?qid=200901...
Sedimentary rock like sandstone, limestone. It's the Canadian Shield.