Destructive Plate Margins Flashcards
1
Q
- What happens when continental plates meat oceanic plate? (convergent plate boundaries)
- what features form?
- example
A
- Subduction happens as the more dense oceanic plate subducts underneath as the less dense oceanic has more bouncy, so floats
- Deep sea trenches
- fold mountains
- benioff zone
- at benioff zone has intermediate and deep earthquakes
- at benioff zone forms volcanic eruptions
- Deep sea trenches
- Andes mountains
2
Q
- What happens when oceanic meets oceanic plates? (convergent plate boundaries)
- What features form?
- Example
A
- subduction the more dense oceanic plate subducts underneath the the less dense oceanic plate
- forms underwater volcanoes which can from island arcs if the come above sea level
produces shallow-to-deep focus earthquakes
3.Aleutain Island
3
Q
- What happens when continent plate meets a continent plate ( convergent plate boundaries)
- What feature form
- Example
A
- collision plate boundaries
2.high fold mountains
maybe some subduction so earthquakes can happen with a shallow focus which will increase their severity 3.Himalayas, Nepal earthquake 2015
4
Q
- Constructive plate boundary what is it?
- what features occur?
- Example
A
- when two plates divide so new crust is formed
- earthquakes
-submarine volcanoes can form new island arcs if they grow above sea level e.g. Iceland on Mid-Atlantic ridge IF THIS HAPPENS BETWEEN TWO OCEANIC CONTENTS
If content to content a volcanoes will form
3.East African rift valley, red sea of content to content
Mid-Atlantic ridge is ocean to ocean
- earthquakes
5
Q
- What is a Conservation plate margins?
- What features form?
- Example
A
- Whn plates slide past each other
- Forming shallow-focus earthquakes
- San Andras fault