Oceans
Ocean Morphology
Key features
Continental shelf
Abyssal plain
Oceanic trench
Reach/Ridge
Guyot
Seamount
Rift valley
Formed when two plates move away from one another (constructive plate margin)
Slower than ridge formation > Magma wells up at the sides, creating a valley
Older undersea volcano
Eroded when it was above sea level
Rounded peak
Formed in subduction zone
Oceanic crust forced down by continental crust, but doesn't get filled by magma
Mostly flat terrain
Guyots and seamounts
Sunlight, life (fish and coral)
Oil + gas
Biotic + abiotic resources
Gold/silver - precious metals
eg. Mid-Atlantic Ridge
Formed when two plates move away from one another (constructive margin)
Magma wells up from the 'gap'
Younger undersea volcano
More active/sharp and pointy peak
Thermohaline Circulation
Model/Oceanic Conveyor Belts
Functions
How it works
Heat transfer and climate regulation
Mineral and nutrients transfer across the globe
Cold water sinks at the Artic
More dense and has higher salt concentration