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Metamorphism and Metamorphic Rocks ESRC 4012 I- Introduction & definitions

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Metamorphism and Metamorphic Rocks ESRC 4012 I- Introduction & definitions

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Questions and Answers

What is metamorphism?

Mineralogical and/or textural changes in response to changes in physicochemical environment (correct)

A process that leads to significant changes in the chemical composition of the rock

A process involving only chemical changes in the bulk rock composition

A process that occurs predominantly in the liquid state

What is required for a change in a rock to be described as 'metamorphic'?

Occur in the liquid state and involve significant chemical changes

Occur at conditions below those of diagenesis

Result in complete change of the chemical composition of the rock

Occur in the solid state and be isochemical (correct)

What is the process called when metamorphism is accompanied by a change in the chemical composition of the rock?

Metasomatism (correct)

Sedimentation

Melting

Diagenesis

How are metamorphic rocks formed?

Subjected to heat, pressure, and chemically active fluids Signup and view all the answers

Why is 'metamorphism' an appropriate name for the process?

"Metamorphism" means to "change form" Signup and view all the answers

What is the definition of metamorphism?

Mineralogical and/or textural changes in response to changes in physicochemical environment Signup and view all the answers

What are the conditions for a change in a rock to be described as 'metamorphic'?

Occur in the solid state, be isochemical, and take place at conditions above diagenesis but below melting Signup and view all the answers

What is the process called when metamorphism is accompanied by a change in the chemical composition of the rock?

Metasomatism Signup and view all the answers

How are metamorphic rocks formed?

Subjected to heat, pressure, and chemically active fluids Signup and view all the answers

Why is 'metamorphism' an appropriate name for the process?

It involves changes in the form and structure of the rocks Signup and view all the answers