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  2. Ultisol - Wikipedia

    en.wikipedia.org/wiki/Ultisol

    Ultisol, commonly known as red clay soil, is 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 .

  3. Cecil (soil) - Wikipedia

    en.wikipedia.org/wiki/Cecil_(soil)

    The subsoil is a red clay which is dominated by kaolinite and has considerable mica. Few Cecil soils are in their virgin state, for most have been cultivated at one time or another. Indifferent land management has allowed many areas of Cecil soils to lose their topsoils through soil erosion, exposing the red clay subsoil

  4. Columbus Motor Speedway - Wikipedia

    en.wikipedia.org/wiki/Columbus_Motor_Speedway

    The track opened in 1946 as a dirt track for motorcycles. In 1950 the track was given lighting and in 1957, the track was paved for the first time as car racing, specifically stock car racing, became more popular. Robert Roseberry sold his portion to John Nuckles after the paving was complete. The track was run by the Nuckles for many years ...

  5. Red soil - Wikipedia

    en.wikipedia.org/wiki/Red_soil

    Red soil is a type of soil that typically develops in warm, temperate, and humid climates and comprises approximately 13% of Earth's soils. [1] It contains thin organic and organic-mineral layers of highly leached soil resting on a red layer of alluvium .

  6. Red clay (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Red_clay_(disambiguation)

    Red clay, or Ultisol, is a type of soil. Red clay or Red Clay may also refer to: Soils. Hong ni (Chinese: ...

  7. Terra rossa (soil) - Wikipedia

    en.wikipedia.org/wiki/Terra_rossa_(soil)

    Terra rossa (Italian for 'red soil') is a well-drained, reddish, clayey to silty soil with neutral pH conditions and is typical of the Mediterranean region. The reddish color of terra rossa is the result of the preferential formation of hematite over goethite.