volcanic environments
DESCRIPTION
Volcanic Environments. Match up the volcano with it’s location. 3. 4. 1. 5. 2. C. D. E. A. B. Volcanic Environments. 3. 4. 1. 2. Submarine volcano erupting under the ocean at the Mid Atlantic ridge, a tensional (divergent) plate margin. A. Volcanic Environments. 3. 4. 1. 2. - PowerPoint PPT PresentationTRANSCRIPT
A B C D
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Volcanic Environments Match up the volcano with it’s location
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A
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Volcanic Environments
Submarine volcano erupting under the ocean at the Mid Atlantic ridge, a tensional (divergent) plate margin.
B
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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
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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
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Shield volcano formed at a hotspot in the earth’s crust. Lava is basic and runny. Eruption is non-violent.
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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 VolcanoesAppearance 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?