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Class Notes
Revision




National Geographic clip of monitoring volcanic action in Hawaii
Plate Tectonics Oxford Textbook Notes

Recent Earthquake Monitor

EarthXs.png
Layers of the Earth


Seafloor spreading Animation
Subduction Animation
Mountain Building

Type of plate boundary
Example
Converging Plate Boundary: Continental- Continental
Cont-Cont.jpg
Converging Plate Boundary:
Oceanic- Continental


Oceanic-Oceanic
Ocean-Cont.jpg
Diverging Plate Boundary:
Oceanic
Atlantic_ridge.jpg
Diverging Plate Boundary:
Continental
EastAfrica.jpg

Types of Volcanoes

Cinder Cone

Composite Volcano

Lava Dome

Maar Volcano

Shield Volcano

Intrusive
Extrusive


Granite
Ryholite
High Silica content
Low Mg and Fe
High silica melt mean,
higher viscosity due to silica chains.
Crystals form.
Explosive!
Gabbro
Basalt
Low silica
High Mg and Fe
Low viscosity
Gases excape easily.

Kanawinka Geopark


Tower Hill Photo