Earthquakes Chapters 8 & 9.

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Presentation transcript:

Earthquakes Chapters 8 & 9

Boundaries Divergent boundaries Convergent boundaries Locations where plates are moving away Oceanic ridges, rift valleys… Convergent boundaries Oceanic – Continental Oceanic crust is being subducted underneath a continental crust Locations – S. America, Pacific NW, Oceanic – Oceanic Two oceanic crusts are converging, one subducts Locations – Aleutians (Island Arc), Japan…

Boundaries Types of Faults Continental – Continental Two continental crusts are colliding Locations – India, eventually northern Africa Types of Faults Normal fault – portion moves downward

Boundaries Reverse Faults The hanging wall moves up relative to the footwall

Boundaries Transform (Strike-slip) Faults The plates move horizontal and parallel to each other

Transform, Reverse, or Normal?

Transform, Reverse, or Normal?

Transform, Reverse, or Normal?

Transform, Reverse, or Normal?

Transform, Reverse, or Normal?