Question

which metamorphic rock is fine - grained, forms along fault zones due to intense shearing, and is characterized by a strongly foliated texture produced by ductile deformation?
coesite
shatter cone
mylonite
migmatite

Explanation:

• Coesite is a high - pressure polymorph of quartz, not a rock with the described texture and formation environment.
• Shatter cones are conical fractures in rocks, usually associated with impact events, not metamorphic rocks with the given characteristics.
• Migmatite is a rock formed by partial melting of a metamorphic rock, having a mixed igneous - metamorphic appearance, not the fine - grained, fault - zone - formed, strongly foliated rock described.
• Mylonite is a fine - grained metamorphic rock that forms along fault zones due to intense shearing (ductile deformation) and has a strongly foliated texture.

Answer:

Mylonite