The Government of Canada’s terminology and linguistic data bank.

SEAT CLAY [1 record]

Record 1 2015-04-13


Subject field(s)
  • Geology

A layer of fine-grained detrital material, usually clay, lying immediately beneath a coal bed or forming the floor of a coal seam. It represents the old soil in which the plants (from which the coal was formed) were rooted, and it commonly contains fossil roots ... It is often a "fireclay" ...


  • Géologie

Couche d'argile formant le mur d'une couche de houille.


Les Américains appellent «underclays» les roches argileuses qui sont situées au mur des couches de houille [...]. Il est évident que la minéralogie des «underclays» est variée puisque les roches dont elles sont issues le sont, mais des variations supplémentaires surviennent.


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