A B C D

12

3 4

Volcanic Environments Match up the volcano with it’s location

E

5

A

12

3 4

Volcanic Environments

Submarine volcano erupting under the ocean at the Mid Atlantic ridge, a tensional (divergent) plate margin.

B

12

3 4

Volcanic Environments

Composite cone volcano forming part of an island arc at a compressional margin where two oceanic plates meet and one is subducted under the other.

C

12

3 4

Volcanic Environments

Composite (stratovolcano) volcano found at a compressional margin where an oceanic plate is subducted beneath a continental plate. Lava is acidic and viscous.

D

12

3 4

Volcanic Environments

Shield volcano formed at a hotspot in the earth’s crust. Lava is basic and runny. Eruption is non-violent.

12

3 4

Volcanic Environments Match up the volcano with it’s location

E

5

Caldera formed by collapse of magma chamber. Crater Lake is an example.

Super volcanoes are very large calderas.

Pacific Ring Of Fire

Anatomy of a Volcano Crater- top of volcano bowl shapeVent – opening Conduit – tube like structure connecting Magma chamber to ventCalderas- Very large depressions, forms when magma chamber empties, collapse and usually fills with water

Summit- side of volcano that collapses into empty chamber

Types of Volcanoes

Appearance of a volcano depends on

1.Type of material that forms the volcano

2.Type of eruptions that occur

3 Major types of Volcanoes

• Shield• Cinder• Composite

Each differs in size, shape and composition

TEXT p. 506

• Compare and contrast the different types of volcanoes

• Provide an example of each type

• http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/volcano_types_quick_reference.html

ANY QUESTIONS?