"<span>levation of the </span>Colorado River<span>, at the bottom of the Canyon, averages out to around 2,200 feet (670 meters). The average elevation of the south rim is around 6,800 feet (2,072 meters) with the highest spot, </span>Grandview Point<span>, being 7,400 feet (2,255 meters). The average elevation of the north rim is about 8,000 feet (2,438 meters) with the highest point, </span>Point Imperial<span>, being 8,800 feet (2,682 meters). The depth of the Canyon at the South Rim, near </span>Grand Canyon Village<span>, measures almost a vertical mile, about 5,000 feet (1,524 meters)."</span>
In 1912 Alfred Wegener (1880-1930) noticed the same thing and proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution.
When Sedimentary rocks are heated with tremendous heat and pressure, it will melt and be back again to magma. After some time it will cool and harden and will become Igneous rocks.
Definition: U-shaped valleys form through glacial erosion. Glaciation develops in established v-shaped river valleys where the ice erodes the surrounding rocks to create a “U” shaped valley with a flat bottom and steep sides. Glacier movement is driven by gravity
