Basin and Range Province

The Basin and Range Province is a vast physiographic region that covers much of the inland Western United States and northwestern Mexico. It is defined by unique basin and range topography, characterized by abrupt changes in elevation, alternating between narrow faulted mountain chains and flat arid valleys or basins. The physiography of the province is the result of tectonic extension that began around 17 Ma (million years ago) in Early Miocene time.

Basin and Range Province

The Basin and Range Province is a vast physiographic region that covers much of the inland Western United States and northwestern Mexico. It is defined by unique basin and range topography, characterized by abrupt changes in elevation, alternating between narrow faulted mountain chains and flat arid valleys or basins. The physiography of the province is the result of tectonic extension that began around 17 Ma (million years ago) in Early Miocene time.