The Global Distribution of Tectonic Hazards
- Created by: belle-madeleine
- Created on: 24-08-17 22:12
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- The Global Distribution of Tectonic Hazards
- Tectonic Hazards
- Earthquakes
- Volcanic eruptions
- Tsunami
- The Global Distribution of Tectonics Hazards: Earthquakes
- On the Map
- 70% of all earthquakes are found in the "Ring of Fire" in the Pacific Ocean
- Most powerful earthquakes are associated with convergent and conservative
- Where Do Earthquakes Occur?
- The oceanic fracture zone
- Along the mid-ocean ridges
- Africa
- The Red Sea
- The Dead Sea rift
- California
- Along the mid-ocean ridges
- The continental fracture zone
- Follows the mountain ranges from Spain via the Alps, to the Middle East, the Himalayas to the East Indies and then circumscribing the Pacific
- Continental interiors
- Can occur along old faultlines
- The oceanic fracture zone
- On the Map
- The Global Distribution of Tectonics Hazards: Volcanoes
- On the Map
- 500 active volcanoes
- 50 volcanoes erupt a year
- The global distribution of active volcanoes
- 500 active volcanoes
- On the Map
- Plate Boundary Types and their Distribution
- Divergent
- Constructive margins
- Mid-ocean ridges
- Shallow focus
- Low magnitude
- Mostly under the sea
- New oceanic crust (thinner and denser) is created
- Frequent earthquakes
- Don't trigger tsunamis
- Convergent
- Plates move together
- Plate material melting in the mantle
- Largest and most damaging earthquakes
- Subduction zone
- Conservative
- Slip, sliding or transform
- One plate slides against another
- Do not result in volcanic activity
- Divergent
- Hotspot Volcanoes
- Found in the middle of tectonic plates
- Fed by underlying mantle plumes
- Tectonic Hazards
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