The smooth, striated, or partially polished surfaces of a fissure or seam, supposed to have been produced by the sliding of one surface on another.

a smooth surface created when two rock faces slide across each other

Rock faces that have been smoothed and scraped by rubbing against other rocks along a fault.

polished grooves on a fault surface resulting from abrasion along the fault plane.

The polished surface of a fault caused by slip on the fault; lineated slickensides also have groves that indicate the direction of fault movement.

Polished striated rock surfaces caused by one rock mass moving across another on a fault.

Striated or highly polished surfaces on hard rocks abraded during movement along a fault.