Volcanoes_1 - EOSC 114 / Guillaume Carazzo Earthquakes...

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EOSC 114 / Guillaume Carazzo Earthquakes Volcanoes Landslides Storms Waves Impacts Volcanoes Lecture 1 - Volcano Basics Lecture 2 - Types of volcanoes Lecture 3 - Volcanic hazards I Lecture 4 - Volcanic hazards II Lecture 5 - Volcano monitoring and predicting eruptions
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Outline 1/ Magma 2 / Types of eruptions Learning Goals By the end of this class you will be able to answer: • What is magma? • Why does magma erupt? • Why is magma important? • Why are gases are critical?
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Mt. Baker, WA Vancouver, BC What are volcanoes? Volcanoes form where magma and gas leak- out from the Earth’s crust and mantle. - Why? - How? - Where?
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Magma, created by the melting of pre-existing rock in Earth’s interior, reaches the surface through fractures and extrudes (erupts) as lava or explodes as pyroclastic material • Magma: melted rock in the Earth’s crust Magma Notice how magma moves gradually and at different rates through the Earth’s crust. Figure 3.22
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Volcanoes_1 - EOSC 114 / Guillaume Carazzo Earthquakes...

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