Marine Provinces

Shelf – slope – rise– Submarine canyons

Abyssal plain– Seamounts and guyots

Mid-ocean ridges– Fracture zones, transform faults– Hydrothermal vents

Deep sea trenches

Shelf, slope, rise

Note variable width of shelf and location of submarine canyons

Getting sediment down to the continental rise

Submarine cableBreaks in canyon

Sediment pouring down canyon

Found onabyssal plains

Location of mid-ocean ridges

Note fracture zones and transform faults

Formation of hydrothermal vents

Black smoker

ALVIN

Tube worms at smoker

Ridges, transform faults, fracture zones

Transform faults offset ridge segments

Fracture zones are extensions of transform faults

Draw relationships and relative motions

Black lines = center of ridgesOffsets = transform faultsLong red lines = fracture zones

Location of trenches

Continental – oceanic convergent plate boundary

Many volcanoes parallel trenches

Ring of Fire around Pacific