Rubifaction or Rubefaction
The reddening of soil or rock caused by the release of iron during weathering, its oxidation to the ferric state, and its precipitation as a hydroxy phase (commonly ferrihydrite, at least initially). The process is typical of the tropics and adjacent parts of the sub-tropics (Pedro, 1968).
- Pedro, G., 1968. Distribution des principaux types d'altération chimiques a la surface du Globe – présentation d'une esquisse géographique. Rev. Géol. Phys. Géol. Dyn., 10: 457–470. Google Scholar