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The Seafloor PowerPoint PPT Presentation


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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).

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The Seafloor

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The seafloor l.jpg

The Seafloor


Continental margin shelf slope rise l.jpg

Continental margin:Shelf, slope, rise


Submarine canyons turbidity currents l.jpg

Submarine canyons, turbidity currents

Relationships between :

shelf,

slope, canyons,

fans,

rise


Abyssal plain l.jpg

Abyssal plain

  • Vast and flat

  • Interrupted by

    • Seamounts (volcanic in origin)

    • Guyots or tablemounts (eroded islands)


Formation of guyots l.jpg

Formation of guyots

Found on

abyssal plains


Location of mid ocean ridges l.jpg

Location of mid-ocean ridges


Mid ocean ridges transform faults fracture zones l.jpg

Mid-ocean ridges, transform faults, fracture zones


Formation of hydrothermal vents l.jpg

Formation of hydrothermal vents


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Black smoker


Slide10 l.jpg

ALVIN


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Tube worms

at smoker


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Black lines = center of ridges

Offsets = transform faults

Long red lines = fracture zones


Location of trenches l.jpg

Location of trenches


Trenches l.jpg

Trenches


A review l.jpg

A review


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