A physiographic province is a geographic region with a specific geomorphology and often specific subsurface rock type or structural elements.
A continent may be subdivided into various physiographic provinces, each having a specific character, relief, and environment which contributes to its uniqueness.
In eastern North America, the Atlantic Coastal Plain, Piedmont, Blue Ridge Mountains, Ridge-and-Valley Appalachians, and Appalachian Plateau are specific physiographic provinces.[1]
In the Western United States of western North America: the Basin and Range Province, Cascade Range, Colorado Plateau, Rio Grande rift, Great Basin, Central Valley (California), Peninsular Ranges, Los Angeles Basin, and Transverse Ranges are physiographic province examples.