Metamorphism and Metamorphic Rocks ESRC 4012 I- Introduction & definitions

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What is metamorphism?

Mineralogical and/or textural changes in response to changes in physicochemical environment

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

Occur in the solid state and be isochemical

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

Metasomatism

How are metamorphic rocks formed?

Subjected to heat, pressure, and chemically active fluids

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

"Metamorphism" means to "change form"

What is the definition of metamorphism?

Mineralogical and/or textural changes in response to changes in physicochemical environment

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

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

Metasomatism

How are metamorphic rocks formed?

Subjected to heat, pressure, and chemically active fluids

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

It involves changes in the form and structure of the rocks

This quiz provides an introduction to metamorphism and metamorphic rocks, covering the definition of metamorphism and the changes that take place in response to the physicochemical environment. It also discusses the solid state nature of metamorphism and its limited impact on chemical composition.

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