Lecture 7

Formation of Metamorphic Rocks

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

Why study metamorphic rocks?

6.1 What is metamorphism?

6.1 What is metamorphism?

6.1 What is metamorphism?

6.1 What is metamorphism?

6.2 What is the role of temperature in metamorphism?

Drawing of the Onset of Metamorphism

Drawing of the Onset ofMetamorphism

Graph: Temperature increasing with Depth

Intrusion of Magma

Temperature in Metamorphism

Heat drives away water and gases

6.2 What is the role of temperature in metamorphism?

6.2 What is the role of temperature in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

6.4 What is the role of fluid in metamorphism?

6.4 What is the role of fluid in metamorphism?

6.4 What is the role of fluid in metamorphism?

6.4 What is the role of fluid in metamorphism?

6.4 What is the role of fluid in metamorphism?

6.5 Why do metamorphic rocks exist at the surface?

6.5 Why do metamorphic rocks exist at the surface?

6.5 Why do metamorphic rocks exist at the surface?

6.6 How do we know how to determine the stability of minerals?

6.6 How do we know how to determine the stability of minerals?

6.6 How do we know how to determine the stability of minerals?

6.6 How do we know how to determine the stability of minerals?

6.7 What were the conditions of metamorphism?

6.7 What were the conditions of metamorphism?

6.8 How are metamorphic rocks classified?

6.8 How are metamorphic rocks classified?

6.8 How are metamorphic rocks classified?

6.8 How are metamorphic rocks classified?

6.8 How are metamorphic rocks classified?

Metamorphic change in rock

Progressive change: texture

Progressive change: mineral

Progressive change: Grade increases

Follated Metamorphic Grade

Rocks without Foliation

A migmatite

6.8 How are metamorphic rocks classified?

6.9 What was the rock before it was metamorphosed?

6.9 What was the rock before it was metamorphosed?

6.9 What was the rock before it was metamorphosed?

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?

Where does metamorphism occur?

6.10 Where does metamorphism occur?

Hyddrothermal Metamorphism

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?

6.10 Where does metamorphism occur?