Answer:
The rock layers now exposed on the Grand Canyon Walls are older than the canyon.
Step-by-step explanation:
- The underlying rock layers that are now exposed after the weathering of the walls of Grand Canyon are older because the rocks were there before the canyon was formed through a prolonged and continued action of sedimentation for millions of years.
- Thus, according to the 'law of superposition', it is quite clear the rock layers beneath the wall of the canyon are older than the canyon.