1. SeeS
Geology
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SeeS / Geology

2. Geology Is the study of the Earth, and the things that make it up.
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SeeS / Geology

3. Structure of Earth
Much of planet is actually liquid, because it is so hot inside.
The outside (the surface) is cool and is solid rock.
We have learned that the Earth’s surface floats on the liquid rock below.
Lithosphere
Crust
Mantle
Core
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SeeS / Geology

4. Plate Tectonics
We have found that the surface of the Earth is made of ‘plates’ that float on the liquid mantel.
The Plates of rock that make up our planet’s surface are kind of like lily pads on a pond. Except they cover the whole thing.
The Plates can bump together or scrape each other and cause Earthquakes, volcanoes, and tsunamis.
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SeeS / Geology

5. Volcanoes Volcanoes are an opening in the crust to the Mantle below.
Magma (melted rock underground) can come out of this opening onto the surface where it will be lava (melted rock above ground).
Volcanoes can release a lot of energy.
Ash Cloud
Crater
1. Magma chamber 2. Bedrock 3. Conduit (pipe) 4. Base 5. Sill 6. Branch pipe 7. Layers of ash emitted by the volcano 8. Flank 9. Layers of lava emitted by the volcano 10. Throat 11. Parasitic cone 12. Lava flow 13. Vent 14. Crater 15. Ash cloud
Magma Chamber
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SeeS / Geology

6. Some Volcano Images
Active volcano Mount St. Helens shortly after the eruption of 18 May 1980
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SeeS / Geology

7. Some Volcano Images
January 2009 image of the rhyolitic lava dome of Chaitén Volcano
southern Chile during its eruption.
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SeeS / Geology

8. Some Volcano Images Indonesia - Lombok: Mount Rinjani 1995 04/15/10
SeeS / Geology