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Geohazards

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Geohazards List as many geohazards as you can Which geohazards are related to plate boundaries ? Which geohazards are related to plate boundaries ? – PowerPoint PPT presentation

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Title: Geohazards


1
Geohazards
List as many geohazards as you can
2
Death Valley Big Fault Zone (earthquake zone)
3
Impact Craters Evidence that we have been
bombarded from space !
Arizona, USA 20,000-50,000 years old
1908 Siberian Impact Site
http//geology.com/meteor-impact-craters.shtml
4
Explosive Volcanic Eruptions
5
Effusive Volcanic Eruptions
Under water
On land
6
India Smashing into Tibet to Create the Himalayas
Darjeeling
7
Tsunami Caused by Earthquakes or Landslides
8
Landslides Gravity, Earthquake, Monsoon and
Volcanic Activity Triggers
Bangladesh
Colorado USA
9
Geohazards
Hazard Plate Margin(s) What causes the hazard
Earthquakes
Effusive Volcanic Eruptions
Explosive Volcanic Eruptions
Landslides
Tsunamis
10
Relate Geohazard to Plate Tectonics
On your table, write in pencil which plate
boundary(s) the hazard is triggered by
Landslide
Earthquake
Tsunami
Explosive Volcanism
Effusive Volcanism
11
Hot Spots Volcanics Throughout Geological Time
12
Hot Spots Not Associated With Plate Tectonics
  • Hot spots and mantle plumes
  • Caused by rising plumes of deep mantle material
  • Volcanoes can form over them (Hawaiian Island
    chain)
  • Mantle plumes
  • Long-lived structures
  • Some originate at great depth, perhaps at the
    mantle-core boundary

13
The Hawaiian Islands
http//www.classzone.com/books/earth_science/terc/
content/investigations/es0810/es0810page03.cfm
http//www.edumedia-sciences.com/en/a99-hot-spot-v
olcanism
14
HAITI
15
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16
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17
Causes of the Haiti Earthquake HW
Research the causes of the Haiti Earthquake,
using pictures to illustrate. No more than one
side
Due next lesson
18
Sometimes, animals act strangely before an
Earthquake
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