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  2. List of U.S. state soils - Wikipedia

    en.wikipedia.org/wiki/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 .

  3. Ultisol - Wikipedia

    en.wikipedia.org/wiki/Ultisol

    Map of the United States showing what percentage of the soil in a given area is classified as an Ultisol-type soil. The great majority of the land area classified in the highest category (75%-or-greater Ultisol) lies in the South and overlays with the Piedmont Plateau, which runs as a diagonal line through the South from southeast (in Alabama) to northwest (up into parts of Maryland).

  4. Chalk Level, Missouri - Wikipedia

    en.wikipedia.org/wiki/Chalk_Level,_Missouri

    A post office called Chalk Level was established in 1848, and remained in operation until 1914. [2] The community most likely was so named on account of the chalky character of the soil at the flat town site. [3] It is also rumored that the city got its name from its "level headed" residents who could "chalk" it down.

  5. Chalk - Wikipedia

    en.wikipedia.org/wiki/Chalk

    Chalk is so common in Cretaceous marine beds that the Cretaceous Period was named for these deposits. The name Cretaceous was derived from Latin creta, meaning chalk. [10] Some deposits of chalk were formed after the Cretaceous. [11] The Chalk Group is a European stratigraphic unit deposited during the late Cretaceous Period.

  6. Soil in the United States - Wikipedia

    en.wikipedia.org/wiki/Soil_in_the_United_States

    Soils are the product of climate, organisms and topography, acting on parent (geologic) material over time. Thus the great diversity of geologic materials, geomorphic processes, climatic conditions, biotic assemblages and land surface ages in the United States is responsible for the presence of an enormous variety of mineral and organic soils.

  7. Calcareous grassland - Wikipedia

    en.wikipedia.org/wiki/Calcareous_grassland

    Calcareous grassland (or alkaline grassland) is an ecosystem associated with thin basic soil, such as that on chalk and limestone downland. [1] Plants on calcareous grassland are typically short and hardy, and include grasses and herbs such as clover.

  8. Menfro - Wikipedia

    en.wikipedia.org/wiki/Menfro

    Menfro strata. Menfro soil is a series of deep, well drained, moderately permeable soils formed in 6-to-20-foot (1.8 to 6.1 m) thick loess deposits. It is found in central and eastern Missouri and west-central and southwestern Illinois on upland ridgetops, backslopes, and benches adjacent to the Missouri and Mississippi rivers and their major tributaries.

  9. Agricultural lime - Wikipedia

    en.wikipedia.org/wiki/Agricultural_lime

    Agricultural lime, also called aglime, agricultural limestone, garden lime or liming, is a soil additive made from pulverized limestone or chalk. The primary active component is calcium carbonate. Additional chemicals vary depending on the mineral source and may include calcium oxide.