Q. Which of the following statements with regard to the Laurentian Plateau is/are correct?
1.It is composed of exposed, ancient Precambrian igneous and high-grade metamorphic rocks that form the geological core of North America.
2.The plateau is highly valued for its economic geology, containing massive and exceptionally fine-quality reserves of iron ore.
Select the correct answer using the code given below:
Answer: C
Notes:
Detailed Explanation:
- Statement 1 is correct: The Laurentian Plateau, or Canadian Shield, is a massive U-shaped region of ancient, stable rock wrapping around Hudson Bay. It represents the ancient geological craton of the North American plate, shaped by billions of years of tectonic activity and glacial erosion.
- Statement 2 is correct: Because of its ancient volcanic and metamorphic history, this shield is incredibly rich in metallic minerals. It holds some of the world’s most productive deposits of high-grade iron ore, nickel, gold, and copper.
