Mylonite is used in construction and road industries.

"Mylonite" is a term coined by Charles Lapworth in 1885 to describe a fine grained, well-laminated rock he had found in the Moine Thrust Zone of the Scottish Highlands. The term has come into general usage to indicate any foliated (and usually lineated) fine grained metamorphic rock which shows evidence for strong ductile deformation. The term is purely structural and conveys no indication of the mineralogy of the rock. Thus, a mylonite can be of any rock type.

• mylonite is fromed by two of the eaths plates slideing on top of each other and one of the plates gets pushed down and the rocks on the plate that is getting pushed down to so it terns to magma then a valcano erups and the lava dries and terns to rock.

Simmon Hanmer has written:

'Geology of the Striding-Athabasca mylonite zone, northern Saskatchewan and southestern District of MacKenzie, Northwest Territories' -- subject(s): Geology

A "fault plane is created, rock layers move relative to one another (rock can melt in the fault plane forming Pseudotachylyte or Mylonite) and energy is released as an earthquake.