2 - Generalized cross section through the Grand
Canyon from the north to south rim.
An interesting piece of triva about the canyon is that the north rim is
300-370 m higher than the south rim. The contrasting height has to do
with the fact that the sedimentary rock units are not lying flat. The
units arch upwards because they are sitting on the southern flank of the
dome that the Colorado River carved through.
The canyon was formed by the dual process of the Colorado River down
cutting and carving its way through the soft sedimentary rocks, and
Fig.3 - Generalized stratigraphic section of rock units in the Grand Canyon