Question

The basement rocks are often:

• A. highly sedimentary and non-crystalline in nature
• B. highly sedimentary but crystalline in nature
• C. highly metamorphic and non-crystalline in nature
• D. highly metamorphic and crystalline in nature

Hint:

Basement rocks = ancient, hard, crystalline metamorphic rocks underlying sedimentary layers.

Answer 1

The Correct Option is D

Basement rocks are the oldest rocks beneath sedimentary sequences and are generally highly metamorphic and crystalline. They form the foundational crust upon which younger sedimentary layers are deposited.