The rock layers now exposed on the Grand Canyon Walls are older than the canyon itself because the canyon walls are built up sediment from the past compacted together to form a sort of wall.
The rock layers now exposed on the Grand Canyon Walls are older than the canyon.
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.
