'Basaltic lava' diaporamas de présentation

Earth Science 101

Earth Science 101. Volcanoes and Other Igneous Activity Chapter 8 Instructor : Pete Kozich. Volcanic eruptions. Factors that determine the violence of an eruption Composition of the magma Temperature of the magma Dissolved gases in the magma These factors affect the magma viscosity

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Chapter 5 Volcanoes and Other Igneous Activity

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Chapter 13 Fires Within: Igneous Activity (Volcanism)

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VOLCANOES

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Earth Science, 10e

Earth Science, 10e. Edward J. Tarbuck & Frederick K. Lutgens. Volcanoes and Other Igneous Activity Chapter 8. Volcanic eruptions. Factors that determine the violence of an eruption Composition of the magma Temperature of the magma Dissolved gases in the magma Viscosity of magma

608 views • 47 slides

Earth Science, 10e

Earth Science, 10e. Edward J. Tarbuck & Frederick K. Lutgens. Volcanoes and Other Igneous Activity Chapter 8. Earth Science, 10e Stan Hatfield and Ken Pinzke Southwestern Illinois College. Volcanic eruptions. Factors that determine the violence of an eruption Composition of the magma

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Earth Science, 13e

Earth Science, 13e. Tarbuck & Lutgens. Volcanoes and Other Igneous Activity Earth Science, 13e Chapter 9. Stanley C. Hatfield Southwestern Illinois College. Volcanic eruptions. Factors that determine the violence of an eruption Composition of the magma Temperature of the magma

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Chapter 18

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More Fluid --> Hotter + Easier gas release (less explosive) + Less siliceous

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Lava Composition

Which element is found most in lava?. Lava is about 50% Silicon. Silicon makes lava thick (high viscosity). The more silicon you have in lava the more explosive the eruptions will be in a volcano. What is building up? Gas and pressure build up under the thick lava . Lava Composition.

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Holy Smokes!

Holy Smokes!. A Volcano Primer By Mrs. Baker. What is a volcano?. A volcano is an opening in Earth that erupts gases, ash, and lava. Volcanic mountains form when layers of lava, ash, and other material build up around these openings. 3 Basic Volcano shapes. Shape

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Types of Volcanoes

Types of Volcanoes. Shield, Composite, Cinder , Dome, Super or Caldera. Shield Volcanoes. Hawaii, Iceland, Galapagos Islands Made almost entirely from fluid lava flows Basaltic lava, generally non-explosive due to low silica content Gently sloping sides, sometimes kilometres wide.

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Eruptions!

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Volcanism

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Chp 7.2 Volcanic Eruptions and Features

Chp 7.2 Volcanic Eruptions and Features. What controls volcanic eruptions?. Composition of Magma Based on percentage of silica and oxygen present in the magma. High Silica: Thicker and slower moving. Usually thick and sticky. Viscosity:

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Definitions

Definitions. Section 9.3. Volcanic Landforms. Shield volcano: A shield-shaped volcano with a broad base and gently sloping sides that is made of basaltic lava. Cinder cone: A cone-shaped volcano formed from lava fragments that have been ejected from a volcano vent.

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The Lunar Interior

The Lunar Interior. A Presentation by Kyle Stephens October 2, 2008. Ingredients for Planetary Evolution. Basic Questions: Homogeneous or layered interior? Enough heat to cause volcanic activity? How far from the sun? How large is the planetary body?. Planetary Evolution: Key Facts.

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Volcanoes

Volcanoes. Eruptions and Forms of Volcanoes. Types of Eruptions. Violent and explosive Quiet and flowing Depends on trapped gases and magma composition. Trapped Gases. Water vapor and carbon dioxide are trapped in magma

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Volcano Explosions and Types

Volcano Explosions and Types. What causes different types of explosions?. Trapped gases: Water vapor and carbon dioxide can be trapped in the magma Results in an explosive eruption Composition Silica poor Silica rich. Silica Poor. Low in silica- basaltic magma

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Chapter 18 - Volcanoes

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