A subprovince of the Basin and Range province, generally characterized by north-trending mountain ranges and intervening basins, stretching from eastern Oregon to southern California
A large inland region comprising about 200,000 square miles in the Western United States bounded by the Sierra Nevada Mountains on the west and the Wahsatch Mountains on the east
which is comprised of a thick sequence of carbonate rock, generally lying below basin fill deposits
A physiographic region, mostly in Utah and Nevada, that was named by John Fremont because the area appeared to be a gigantic enclosed basin May be considered as a region of internal drainage (no outlet to the ocean), a biotic region (having similar flora and fauna), or an ethnographic province (based on cultural similarities) Boundaries vary depending upon usage of the term