Soil color is often the most visually apparent property of soil. While color itself does not influence the behavior or practical use of soils,[1] it does indicate important information about the soil organic matter content, mineralogy, moisture, and drainage.[2]
Soil can display a wide range of colors including brown, red, yellow, black, gray, white, and even blue or green, and vary dramatically across landscapes, between the various horizons of a soil profile, and even within a single clod of soil.[1]
The development and distribution of color in soil results from chemical and biological weathering, especially redox reactions. As the primary minerals in soil parent material weather, the elements combine into new and colorful compounds. Soil conditions produce uniform or gradual color changes, while reducing environments result in disrupted color flow with complex, mottled patterns and points of color concentration. Sometimes, a distinct change in color within a soil profile indicates a change in the soil parent material or mineral origin.[3]
^ abBrady, Nyle C.; Weil, Ray R. (2010). Elements of the nature and properties of soils (3rd ed.). Upper Saddle River, N.J. ISBN 978-0-13-501433-2. OCLC 276340542.{{cite book}}: CS1 maint: location missing publisher (link)
^Owens, P. R.; Rutledge, E. M. (2005). Encyclopedia of soils in the environment. Daniel Hillel, Jerry L. Hatfield (1st ed.). Oxford, UK: Elsevier/Academic Press. ISBN 0-12-348530-4. OCLC 52486575.
^Gardiner, Duane T.; Miller, Raymond W. (2008). Soils in our environment (11th ed.). Upper Saddle River, N.J.: Pearson/Prentice Hall. ISBN 978-0-13-219104-3. OCLC 85018836.
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plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil. Soil consists...
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soil chemistry, and physical properties. More specifically, each series consists of pedons having soil horizons that are similar in soilcolor, soil texture...
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200 mm long. The dorsal pelage ranges from gray to brown, depending upon soilcolor, and the belly is whitish. Its head is bulky, and the face is black and...
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available (e.g. temperature, elevation, soil composition, tissue type, and so on), in contrast to false color which is commonly used to display three...
soil at very low levels. When heated, the limonite and goethite is dehydrated and turns partially to hematite, which gives it a reddish-brown color....
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