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Tennessee is in the Southeastern United States.Most of the state is considered part of the Upland South, and the eastern third is part of Appalachia. [1] Tennessee covers roughly 42,143 square miles (109,150 km 2), of which 926 square miles (2,400 km 2), or 2.2%, is water.
The Mississippi River as well as the Tennessee and Cumberland Rivers formed and cut deep into the valleys. The Nashville Basin , which in reality is a geologic dome , was pushed up from underneath by a mantle plume , exposing softer strata that with additional erosion on the Highland Rim surrounding the basin expanded the size of the basin.
This is a list of U.S. state soils. A state soil is a soil that has special significance to a particular state. Each state in the United States has selected a state soil, twenty of which have been legislatively established. These official state soils share the same level of distinction as official state flowers and birds.
Southern Limestone-Dolomite Valleys & Low Rolling Hills ecoregion (67f, medium-dark orange) coursing through the states of Virginia, Tennessee, Georgia and Alabama.. The Southern Limestone/Dolomite Valleys & Low Rolling Hills (Ecoregion 67f) is one of the 99 Level IV ecoregions in the continental United States, as defined by a collaboration between the EPA, USGS and USDA. [1]
The Highland Rim is a geographic term for the area in Tennessee, North Alabama, and Kentucky which surrounds the Central Basin.Geologically, the Central Basin is a dome.The Highland Rim is a cuesta surrounding the basin, and the border where the difference in elevation is sharply pronounced is an escarpment.
In the west, the Tallahassee Hills portion has rolling, hilly topography that is more forested than 65h. Clayey sands weathered to a thick red residual soil are typical. Relief decreases towards the east, and the Valdosta Limesink area has more solution basins with ponds and lakes, and more cropland. The soils are typically brownish. [4]
About 15% of the surface soil consists of "Adler silt loam" with a slope of 0–1%, found in the frequently flooded plains at Randolph. About 20% of the soil is severely eroded "Memphis silt loam" with 12–25% slopes, and ca. 35% of the soil consists of "Memphis silt loam" with 20–40% slopes.
The Bluff Hills in the western portion contain soils that are very deep, steep, silty, and erosive. Flatter topography is found to the east. Tertiary deposits of sand, silt, and clay underlie the region. Alfisols, Inceptisols, Entisols, and Ultisols are dominant, with thermic soil temperatures and udic and some perudic soil moisture regimes. [1]