Generally, basin and range areas of the world are mostly the direct outcome of the geological factors that underlie most notably -tectonic extensions. These have started 17 million years back and are the outcome of lithosphere and earth crust being pulled apart due to tectonic movement. By the passage of time with progressive crust movement, it became stretched and thinner to a point where fracture can occur due to faults. Such faults are the outcome of normal faults. Western United States have a vast region covering its inland which is characterized by abrupt elevation changes, varying between flat arid basins to faulted and narrow chain of mountains.
