Submarine canyons and deepsea fans

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Submarine canyons and deep-sea fans

• Turbidity currents carve submarine canyons into
  the slope and shelf
• Debris from turbidity currents creates graded
  bedding deposits and deep-sea fans

Figure 3-8a
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Major regions of the North Atlantic Ocean floor

• Continental margin
• Ocean basin floor
• Mid-ocean ridge

Figure 3-5
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Diver in the La Jolla Submarine Canyon
Figure 3-8b
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Turbidity Current Schematic
Fig. 4-10b
Sedimentary beds laid down by Turbidity currents
are called ________.
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View Out the Porthole
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Turbidity Currents Often start as ______ masses
The sediment ______ so emplaced are called
Turbidites.
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1929 Grand Banks Earthquake
(Heezen and Ewing)
Fig. B4-4
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1929 Grand Banks Earthquake
Fig. B4-4