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Lecture+3+outline - Abyssal fans Deep Ocean Basins Mid...

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Lecture 3: A tour of the ocean basins and margins Review of Lecture 2:
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A tour of the ocean basins Northern Hemisphere Southern Hemisphere Atlantic Ocean Arctic Ocean Indian Ocean Pacific Ocean Southern Ocean Bathymetry Bathymetry is the study of ocean floor contours, or depths How do we study the sea floor?
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Sound in the ocean Hypsographic curve: shows the percent of earth’s area at a range of heights:
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Classifying the ocean floor Continental margins: Ocean Basins: Continental Margins Continental shelf : Shelf break Continental slope : Continental rise:
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Passive margins Active margins Submarine canyons Turbidity currents
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Unformatted text preview: Abyssal fans Deep Ocean Basins Mid Ocean Ridges (MOR) : a mountainous chain at the active spreading center of the ocean Fracture zones : extinct transform faults that run perpendicular to the axis of the MOR. Hydrothermal vents: Abyssal Plains: Abyssal Hills: Seamounts: . The Wilson Cycle – the formation and termination of ocean basins Stages: Embryonic: rift valleys on a continent Juvenile: narrow seas Mature: ocean basin with continental margin Declining: Island arcs, trenches, subduction Terminal: narrow sea with mountains Suturing: mountain belts...
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  • Fall '08
  • Hill,T
  • Atlantic Ocean, Pacific Ocean, OCEAN BASINS, Northern Hemisphere Southern Hemisphere Atlantic Ocean Arctic Ocean Indian Ocean Pacific Ocean Southern Ocean, Continental Margins Continental
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