Volcanoes

1
Volcanoes

2
Types of Volcanoes

• Volcanoes are classified under
• 4 categories
• Shield Volcanoes
• Cinder Cone
• Composite or Stratovolcanoes
• Lava Domes

3
Shield Volcanoes

• Quiet non-explosive
• Great masses of lava quietly ooze out from an
  opening in the earth's crust
• Liquidy lava
• Gently sloping cone.
• The largest volcanoes on earth

4
Shield Volcanoes

• Mount Kilauea, Hawaii, USA

5
Shield Volcanoes

• Mauna Loa, Hawaii, USA

6
Cinder Cone Volcanoes

• Explosive volcanoes
• Volcanic bombs, cinders, and ash are hurled out
  of an erupting volcano
• Most have a bowl-shaped crater at the summit
• Some of the tallest volcanoes

7
Cinder Cone Volcanoes

• Mount Etna in Italy

8
Cinder Cone Volcanoes

• Tavurvur, Papua New Guinea

9
Cinder Cone Volcanoes

• Mount Veniaminof, Alaska

10
Composite orStratovolcanoes

• Also called STRATOVOLCANOES
• Alternating layers of lava and cinders on earth
• Consists of many separate vents

11
Stratovolcanoes
12
Stratovolcanoes

• Mount Vesuvius Erupting (Italy)

13
Stratovolcanoes

• A victim found from Pompeii

14
Stratovolcanoes

• Mount Fuji, Japan

15
Stratovolcanoes

• Mount Ranier, Washington, USA

16
Stratovolcanoes

• Mount Hood, Oregon, USA

17
Stratovolcanoes

• Mayon Volcano, Luzon Island, Philippines

18
Stratovolcanoes

• Mount St. Helens, Washington, USA

19
Stratovolcanoes

• Ararat, Turkey

20
Lava Dome Volcanoes

• Volcanic or lava domes are formed by relatively
  small, bulbous masses of lava that are very
  viscous (sticky gooey)
• A steep-sided mass
• Its surface is often rough and blocky as a result
  of fragmentation of the cooler, outer crust
  during growth of the dome

21
Lava Dome Volcanoes
22
Lava Dome Volcanoes

• Lassen Park Dome Volcano

23
Lava Dome Volcanoes

• Mount Pelee, West Indies

24
Lava Dome Volcanoes

• Montserrat, West Indies

25
Lava Dome Volcanoes

• Montserrat, West Indies

26
(No Transcript)
27

• Recent Volcanic Eruption Mini-research Project
• Your task
• Find a recent volcanic eruption and write a small
  report about the volcano.
• Be sure to include the name of the volcano, the
  type of volcano, and date of the most recent
  eruption, a description of the eruption, and the
  impact on the environment.
• Use the following link to find some interesting
  info
• http//volcano.und.nodak.edu/vwdocs/current_volcs/
  current.html