Striation (geology)

Striations observed in Peloponnese, Greece.

Slickenside striations on a Pyrite-coated fault surface

In geology, a striation means linear furrows generated from fault movement; The striation's direction reveal the movement directions in the fault plane. Similar striations can occur with glaciation.

Striations can also be a growth pattern shown on certain faces of certain minerals. Minerals that can include growth striations include Pyrite, Feldspar, Quartz, Tourmaline, and Sphalerite. Also called "hairline" grooves.

See also

• Glacial striation