The Seafloor.

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Presentation transcript:

The Seafloor

Continental margin: Shelf, slope, rise

Submarine canyons, turbidity currents Relationships between : shelf, slope, canyons, fans, rise

Abyssal plain Vast and flat Interrupted by Seamounts (volcanic in origin) Guyots or tablemounts (eroded islands)

Formation of guyots Found on abyssal plains

Location of mid-ocean ridges

Mid-ocean ridges, transform faults, fracture zones

Formation of hydrothermal vents

Black smoker

ALVIN

Tube worms at smoker

Black lines = center of ridges Offsets = transform faults Long red lines = fracture zones

Location of trenches

Trenches

A review

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