Volcanoes

3/30/01


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Table of Contents

Volcanoes

Distribution of Active Volcanoes

Plate Boundaries and Volcanism

Subduction Zone Volcanism

Intraplate Volcanism

Plumbing of a Volcano

Types of Volcanic Settings

Volcanic Deposits

Lava Flows

Ropy Lava

Lava Tube

Pillow Lavas

Fire Fountain

Volcanic Bombs and Blocks

Eruptive Styles and Landforms

Types of Volcanoes

Shield Volcanoes

Mt. St. Helens

Cinder Cones

Density Contrasts Drive Migration

Caldera Formation (I)

Caldera Formation (II)

Crater Lake and Wizard Island

Shiprock, NM - A Volcanic Neck

Plateau Basalts

Flood Basalts

Geysers

Global Volcanism

Volcanism and Plate Tectonics

Mt. St. Helens : Before & After

Early Stage of the Eruption

Middle Stage

Final Stage

In Full Eruption

Ash Fall

Shock Wave (trees)

Hours After The Eruption

Devastation

Sunset

Author: John C Butler

Email: jbutler@uh.edu