Tectonic Hazards
Chile Vs Nepal
Chile, February 2010 Nepal, April 2015
Wealth (GDP) GDP 38th GDP 109th
Cause Nazca Plate Subduction Indo-Australian Plate
Colliding
Size Magnitude 8.8 Magnitude 7.9
Primary Effects - 5 00 killed - 9 000 killed
- $30 billion damage - $5 billion damage
Secondary Effects - L andslides - L andslides
- Tsunammis - Avalanches
Immediate Responses - E mergency services - S earch and Rescue
- Roads repaired Aid
within 24 hours - 300,000 reallocated
Secondary Responses - G overnment - International
reconstruction plan conference to seek
- Full recovery within aid
4 years - Roads repaired
Tectonic Plates
There are two types of crusts:
● Oceanic crust
○ These are thinner, younger and denser so they can sink (subduct) under
another plate.
● Continental crust
○ These are thicker, older and denser. Because they are lighter, they do not
sink.
There are three types of plate margins:
● Constructive plate margins
○ The plates move apart from each other. As they separate magma rises and
breaks the crust which causes mild earthquakes and volcanic eruptions
Chile Vs Nepal
Chile, February 2010 Nepal, April 2015
Wealth (GDP) GDP 38th GDP 109th
Cause Nazca Plate Subduction Indo-Australian Plate
Colliding
Size Magnitude 8.8 Magnitude 7.9
Primary Effects - 5 00 killed - 9 000 killed
- $30 billion damage - $5 billion damage
Secondary Effects - L andslides - L andslides
- Tsunammis - Avalanches
Immediate Responses - E mergency services - S earch and Rescue
- Roads repaired Aid
within 24 hours - 300,000 reallocated
Secondary Responses - G overnment - International
reconstruction plan conference to seek
- Full recovery within aid
4 years - Roads repaired
Tectonic Plates
There are two types of crusts:
● Oceanic crust
○ These are thinner, younger and denser so they can sink (subduct) under
another plate.
● Continental crust
○ These are thicker, older and denser. Because they are lighter, they do not
sink.
There are three types of plate margins:
● Constructive plate margins
○ The plates move apart from each other. As they separate magma rises and
breaks the crust which causes mild earthquakes and volcanic eruptions
