Which is older the grand canyon or the rock layers now exposed on the canyon walls explain your reasoning

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.

The peak above is part of the  sierra madre occidentals ,  a chain of volcanic mountains that runs through the middle of central america.