Ocean Basins (Chapter 19)

1
Ocean Basins (Chapter 19)

• By Lilian Vazquez
• Period 4
• June 1,2010

2
Global Oceans

• Atlantic, Pacific, Indian, Arctic, and Southern

3
Technology (used to study oceans)

• Sonar- sound navigation and ranging, a system
  that uses acoustic signals and returned echoes to
  determine the location of objects or to
  communicate
• Submersibles- Human piloted or self piloted,
  vessels sent underwater that can do a various of
  jobs like taking photographs, collecting mineral
  samples.
• Drilling Ships- Ships used to obtain core
  samples, that are used for testing

4
Continental vs. Oceanic crust

• The boundary between the oceanic, and continental
  crust is located at the base of the continental
  basin.

5
Ocean Basin Features
6
Trenches

• Long, narrow, and steep depression that forms on
  the ocean floor as a result of subduction of a
  tectonic plate

7
Abyssal Plains

• A large, flat, almost level area of the
  deep-ocean basin

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Mid-Ocean Basins

• Form underwater mountain ranges that run along
  the floors of all oceans.

9
Seamounts

• Submerged volcanic mountains that are taller than
  1 km

10
Ocean Sediments

• Inorganic Sediments- Sediments brought from the
  land by rivers that dont originate from living
  organisms
• Biogenic Sediments- sediments that originate from
  living organisms
• Chemical Sediments- Minerals, or sediments that
  form from the crystallization of Nodules.

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How Sediments Settle

• Finer, and smaller particles will take along time
  to settle opposed to the bigger and heavier
  particles that settle faster.
• Finer and smaller particles settle on the deep
  ocean basins, while the heavier, and coarser
  particles settle by, or on the shore.