Nevada is located in the Intermontaine Basins and Plateaus physiographic region of North America. Most of Nevada is just below 40 degrees latitude and east of 120 degrees longitude. It is not quite east enough to reach the Rocky Mountains, but it does have the Sierra Nevada range to its west. Nevada’s climate is called Middle Latitude Desert climate; it is very hot and dry most of the year, and very cold at night. Its annual rainfalls range between 4 and 12 inches for the greater part of the state. Most of the state lies in the semi-desert vegetation region, and most of the soils are of the aridisols variety. There are no mineral fuels mined in Nevada, but a great deal of metallic minerals, from tin to platinum. Much of Nevada’s subsurface rock is metamorphic.