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BRAUNIFICATION [1 record]

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Alphabetical list of terms

Record 1 2004-10-20

English

Subject field(s)
  • Soil Science
  • Geochemistry
  • Geology
DEF

Release of iron from primary minerals and the dispersion of particles of iron oxide in increasing amounts ... giving the soil mass [a] brownish ... colour ...

CONT

Three processes, braunification, rubifaction, and ferrugination (development of brown, reddish brown, and reddish soil colors), are self-explanatory as to soil appearance, although imperfectly understood to the exact mechanisms involved.

PHR

Browning of soil.

French

Domaine(s)
  • Science du sol
  • Géochimie
  • Géologie
DEF

Processus de formation de complexes argile-fer ou argile-fer-humus produisant des sols bruns

CONT

[...] la brunisation, ou brunification, processus de coloration des sols en brun [...] consiste essentiellement en la formation, en milieu modérément acide ou neutre, de complexes argile-humus-oxyde de fer à partir d'un humus doux du type mull. La couleur brune est due à l'association de la teinte noire ou brun-noir de l'humus et de la teinte rouge ou orangée des composés du fer; elle est d'autant plus foncée que ces complexes sont riches en fer et surtout en humus [...]

Spanish

Campo(s) temático(s)
  • Ciencia del suelo
  • Geoquímica
  • Geología
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