Question

A piece of granite contained within a sandstone would be older or younger?

Answer 1

The granite is younger if it contains sandstone inclusions. The granite is older if it contains sandstone inclusions. The sandstone is older if it shows evidence of contact metamorphism. The granite is older if the sandstone contains pebbles of the granite.

Answer 2

A piece of granite contained within a sandstone would be younger than the sandstone.

Explanation:

• A piece of granite contained within a sandstone will be younger than the sandstone.
• It can be understood by principle of sedimentary rocks which states that folded rocks are younger than the forces responsible for deforming them.
• Sandstone is formed on the surface and so is younger than phyllite but granite is cut through in which makes it younger than sandstone.
• Superposition principle: Young units of sedimentary rocks are at the top whereas older rocks are at the bottom.