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
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