Return to glossary home page
ThemesWords ReferencesLinks

Bilingual glossary of geology


Slaty Rock Cleavage  Clivage ardoisier
Type of foliation characteristic of slates in which there is a parallel arrangement of sheet silicates causing the rock to easily break along flat parallel planes. In a sequence of increasing metamorphic conditions, slaty rock cleavage precedes phyllitic texture.

Themes:
  Metamorphic rocks

Related words:
  Phyllitic (Texture)
  Foliation
  Schistosity
  Gneissosity