Geography and landscapes National parks of the American West
The parks of l & rsquoaméci is the result of the collision, which began in the south. Wind and water forces then intervene in a long process of erosion.
From east to west, we meet:
The Rocky Mountains proper
They are found mainly in Wyoming (Absaroka Range) and Colorado (Front Range). Constituted Mexico with the Sangre de Cristo Mountains, but become less imposing.
They also encroach on Utah (Wasatch Range).
Needless to say, they constitute a colossal reservoir of water and give rise to many rivers that are essential for the ecology and economy of the country.
The interior plateaus and desert expanses
In the southwest, the landscape changes radically. This is below sea level.
The Colorado Plateau in Mexico is undoubtedly the most famous. C & rsquoMexico, extends a belt of deserts: Mojave, Sonora, Chihuahua, with cactus "forests" near the Mexican border.
Finally, in eastern California rises, from north to south, the Sierra Nevada, which constitutes a real barrier for precipitation from the Pacific; it culminates at 4 m with Mount Whitney. Its heavily watered western slope irrigates the Central Valley; it is one of the richest agricultural areas in the country.