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Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

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Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young
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Page 1: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Chapter 4 -Volcanism & Extrusive Rocks

Photo Credit: S. Young

Page 2: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Effects on Humans

• The Growth of Hawaii• Geothermal Energy• Effect on Climate• Volcanic Catastrophes• Eruptive Violence and Physical Characteristics of

Lava

Page 3: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Cascades Volcanoes

Page 4: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Mt. St. Helen’s Eruption Sequence

Page 5: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Gary Rosenquist Photo Sequence - Mt. St. Helen’s, May 18, 1980

~8:27 PDT8:32:47.0 PDT8:32:49.2 PDT8:32:53.3 PDT8:33:03.7 PDT8:33:18.8 PDT

Page 6: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Mt. St. Helen’s Animation

Page 7: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Mt. St. Helen’s Plinian Eruption Column - May 18, 1980

From: USGS http://vulcan.wr.usgs.gov/

Page 8: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Mt. St. Helen’sMay 18, 1980 Devastation

Page 9: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Post May 18, 1980 Crater and Resurgent Dome

From: USGS http://vulcan.wr.usgs.gov/

Page 10: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Caldera Collapse

Page 11: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Crater lake - Wizard Island - 5 kBP Eruption Mt. MazamaCrater lake, Wizard Island, OR8 kBP Eruption Mt. Mazama

From: http://www.igoweb.org/~wms/personal/photos/2000/craterLake/

Page 12: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Pyroclastic Flows

Page 13: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.
Page 14: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

St. Pierre Devastation, Mt. Pelee, Martinque, May 8, 1902

Page 15: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Extrusive Rocks and Gases

• Scientific Investigation of Volcanism• Gases

Extrusive Rocks

Page 16: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Volcanic Textures Table

Page 17: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.
Page 18: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Obsidian Hand Specimen

Page 19: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Andesite Hand Specimen

Page 20: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Andesite Photomicrograph

Page 21: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Vesicular Basalt

Page 22: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Pumice

Page 23: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Volcanic Bombs

Page 24: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Volcanic Tuff Photomicrograph

Page 25: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Types of Volcanoes

• Shield Volcanoes

• Cinder Cones

• Composite Volcanoes

• Volcanic Domes

Page 26: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Basic Volcano Types

Page 27: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Karymsky Volcano, Kamchatka, Russia

Page 28: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Shield Volcano

Page 29: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Basaltic Fire Fountaining and Lava Flows

Page 30: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Summit of Mauna Loa

Page 31: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Pahoehoe Lava Flow

Page 32: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Aa Lava Flow

Page 33: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Spatter Cone

Page 34: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Olympus Mons, Mars

Page 35: Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.

Volcanic Eruption, Io


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