A Georgia Red Clay"

A Georgia Red Clay"

Georgia Red Clay

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Georgia Red Clay is the common name for a soil found in Georgia that is red in color. It is prevalent in other locations as well. It is called clay but it is actually classified as Ultisol. The red clay gets its color from iron oxide. It is typically acidic because rainfall leaches calcium from the soil. The lower the calcium, the lower the pH becomes. That makes it more acidic. Georgia Red Clay has some characteristics that behave like traditional clay soil. It can seem hard and dense just like clay. In fact there are other red clay soils that are alkaline. They are often in arid regions. They also get their color from iron oxide. These red clay soils can be rich in calcium.

Ultisols, commonly known as red clay soils, are one of twelve soil orders in the United States Department of Agriculture soil taxonomy. The word "Ultisol" is derived from "ultimate", because Ultisols were seen as the ultimate product of continuous weathering of minerals in a humid, temperate climate without new soil formation via glaciation. They are defined as mineral soils which contain no calcareous (calcium carbonate containing) material anywhere within the soil, have less than 10% weatherable minerals in the extreme top layer of soil, and have less than 35% base saturation throughout the soil. Ultisols occur in humid temperate or tropical regions. While the term is usually applied to the red clay soils of the Southern United States, Ultisols are also found in regions of Africa, Asia, and South America. (Source: en.wikipedia.org)



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