Question

Define cataclastic metamorphism and explain.

Answer 1

A cataclastic rock is a type of metamorphic rock that has been wholly or partly formed by the progressive fracturing and comminution of existing rock, a process known as cataclasis. ... Cataclastic rocks are associated with fault zones and impact event breccias.

Answer 2

Cataclastic Metamorphic

Explanation:

• The metamorphism in which only the directed pressure or lateral stress play a dominant role.

• These stresses are caused by earth movements.
• The earth movements include folding and fauting.
• They operate mainly in the upper part of the earth's crust where the temperatures are moderately low.
• Due to these stresses rocks are crushed , ground and deformed.
• New rocks thus formed are called 'cataclastic rocks'.
• They show mechanical crushing with little new mineral formation.
• Examples:- mylonites and fault breccias.