Encyclopedia of Soil Science

2008 Edition
| Editors: Ward Chesworth

Profile

  • George R. Blake
  • Gary C. Steinhardt
  • X. Pontevedra Pombal
  • J. C. Nóvoa Muñoz
  • A. Martínez Cortizas
  • R. W. Arnold
  • Randall J. Schaetzl
  • F. Stagnitti
  • J.‐Y. Parlange
  • T. S. Steenhuis
  • Ward Chesworth
  • Y. Mualem
  • H. J. Morel‐Seytoux
  • Otto Spaargaren
  • Ward Chesworth
  • Y. K. Soon
  • D. S. Orlov
  • Otto Spaargaren
  • J. J. Oertli
  • Jan Gliński
  • Jerzy Lipiec
  • Witold Stępniewski
  • Otto Spaargaren
  • Otto Spaargaren
  • Ward Chesworth
  • Carmela Monterroso
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-3995-9_466
A soil profile is a vertical section through soil. A complete soil profile displays all horizons of a soil down to unweathered material or bedrock. Within the profile, horizons are designated as follows in the American system of Soil Taxonomy. See  Horizon Designations in the WRB ( q.v.) for information concerning that system of classification.
  1. 1.
    Capital letters designate the principal horizons as shown in Table P18.
    Table P18

    Master soil horizons and layers in a profile

    New

    Old

    Description

     

    O

    O

    Organic horizons of minerals soils. Horizons (i) formed or forming in the upper part of mineral soils above the mineral part; (ii) dominated by fresh or partly decomposed organic materials; and (iii) containing more than 30 percent organic matter if the mineral fraction is more than 50 percent clay, or more than 20 percent organic matter if the mineral fraction has no clay. Intermediate clay content requires proportional organic matter content.

     

    Oi

    O1

    Organic horizons in which essentially the...

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Bibliography

  1. Miller, R.W., and Donahue, R.L., with Miller, J.U., editorial assistant, 1990. Soils: An Introduction to Soils and Plant Growth. Englewood Cliffs, NJ: Prentice-Hall, 768 pp.Google Scholar
  2. Soil Survey Staff, 1999. Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys, 2nd edn. U.S. Dept. of Agriculture Handbook 436, Washington DC: Government Printing Office, 869 pp.Google Scholar

Copyright information

© Springer 2008

Authors and Affiliations

  • George R. Blake
  • Gary C. Steinhardt
  • X. Pontevedra Pombal
  • J. C. Nóvoa Muñoz
  • A. Martínez Cortizas
  • R. W. Arnold
  • Randall J. Schaetzl
  • F. Stagnitti
  • J.‐Y. Parlange
  • T. S. Steenhuis
  • Ward Chesworth
  • Y. Mualem
  • H. J. Morel‐Seytoux
  • Otto Spaargaren
  • Ward Chesworth
  • Y. K. Soon
  • D. S. Orlov
  • Otto Spaargaren
  • J. J. Oertli
  • Jan Gliński
  • Jerzy Lipiec
  • Witold Stępniewski
  • Otto Spaargaren
  • Otto Spaargaren
  • Ward Chesworth
  • Carmela Monterroso

There are no affiliations available