How Was the Grand Canyon Formed?

How was the Grand Canyon formed? There's no definite or clear answer to this question. There's some theories, however. The Grand Canyon may have been formed because of the Colorado River, because of erosion, and because of continental drift. Of course, we don't know exactly how it was formed or which of these factors was responsible... but we do know it is an amazing site to see. 

There is a great deal of speculation as to how exactly the expanse of the Grand Canyon was formed. Unfortunately, in truth there is no scientific evidence that gives us one particular answer as to what caused the formation of the Grand Canyon. The explanations currently offered are only the best guesses that can be offered, based on what we know at this time. These best guesses for how the Grand Canyon was formed are explained below.

Colorado River

The Colorado River is credited with much of the work that created the canyon, although it’s highly unlikely that the river alone created the massive canyon we see today.

Continental Drift

Continental drift has also been suggested as a possible cause for the canyon’s formation. Continental drift is the gradual and shifting movement of land masses that sit on the tectonic plate structures under the earth’s crust. Of course, even if continental drift caused an original canyon to be formed, other forces were probably at work that made the Grand Canyon what it is today.

Erosion

Erosion is widely believed to be one of the main causes of the formation of the Grand Canyon. Although no one force is responsible for the creation of this great canyon, erosion from ice, water and wind likely played a major role.

The reason erosion has been able to play such effective a role in the Grand Canyon’s formation is due to the soil content, as well as due to the fact that the Grand Canyon is mostly made up of desert.

• The sands that make up the ground in the canyon are very brittle after being baked by the sun. This makes them susceptible to substantial erosion.
• The plant life also contributes to the erosive forces being so effective, because in order to survive in the dryer conditions at the Canyon, plant life must maintain a very shallow root structure to receive as much moisture as possible during the sporadic but often torrential rainfalls that take place in desert environments. These root structures, though effective in absorbing enough moisture to survive, don’t offer much in the way of ground stability that protects against the movement of ground material. 
• The rainfalls that occur in the Grand Canyon’s desert environment also contribute to erosion. The rain falls are often heavy and free-flowing, and the conditions that are set for the wearing away of the Earth’s surface are almost perfect for a structure such as the Grand Canyon. When the torrential rainfalls that occur in these environments take place, the effect they have is that of a flash flood, with an amount of power that is comparable to a tidal wave.

These effects are likely the main reasons for the formation of the Grand Canyon, one of the Earth’s most magnificent structures.