8.1.4 The Formation of Composite Volcanoes Diagram (17-18)
A vent in the earth's crust.
Where one plate is forced to move under another. This occurs at destructive plate boundaries.
1. As the plates move towards each other because of convection currents in the mantle, the denser oceanic plate subducts under the continental plate.
2. The oceanic plate melts as it subducts.
3. This magma chamber which has been created weakens the continental crust and pushes upwards to form a vent.
4. Pressure builds until it is released in a violent eruption.
YOU MIGHT ALSO LIKE...
8G 14.3 Theory of Plate Tectonics
Earth and Environmental Unit 2
Week 21 2/12 - 2/16
Geological Activity at Plate Boundaries
OTHER SETS BY THIS CREATOR
11.1 GCSE German - Containers
11.7 GCSE German - Describing Jobs
11.7 GCSE German - Applying for Jobs
11.7 GCSE German - Verbs
THIS SET IS OFTEN IN FOLDERS WITH...
The Greenhouse Effect - Diagram
Types of Clouds
8.1.4 The Formation of Composite Volcanoes (17-18)