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Salt weathering

Chemical Process (Liquid-phase Growth) - Ground Surface

Required Geological Setting

Neogene and Quaternary sediments


Minerals precipitated in the process of water evaporation on the surface of host rocks in the dry climate. Weathering is accelated by growth of water-soluble minerals on the rock surface, and characteristic elipsoidal holes, Tafoni, are formed. Minerals by this process usually grow in winter in Japan. Honeycomb weathering frequently observed near seashores is also considered as tafoni.

Salt weathering

Distribution of minerals associated with salt weathering processes described in this site. Yellow zones are Neogene and Quaternary sediments.

Reported Minerals

  • Alunogen
  • Gypsum
  • Alum
  • Jarosite
  • Thenardite
  • Epsomite
  • Halotrichite
  • Tamarugite
  • Hexahydrite


Related Occurrences

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