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Mid-Atlantic Ridge

lava flow, southern Iceland - Click to enlarge
Mid-Atlantic Ridge at Thingvellir, Iceland - Click to enlarge
rift in rocks at Thingvellir, Iceland - Click to enlarge
rift valley wall, Thingvellir, Iceland - Click to enlarge
river and rift valley at Thingvellir, Iceland - Click to enlarge
sloping rock faces at Thingvellir, Iceland - Click to enlarge
Click images to enlarge

Mid-ocean ridge that runs along the centre of the Atlantic Ocean, parallel to its edges, for some 14,000 km/8,800 mi – almost from the Arctic to the Antarctic. Like other ocean ridges, the Mid-Atlantic Ridge is essentially a linear, segmented volcano.

The Mid-Atlantic Ridge runs down the centre of the ocean because the ocean crust has continually grown outwards from the ridge at a steady rate during the past 200 million years. Iceland straddles the ridge and was formed by volcanic outpourings.

© RM 2010. Helicon Publishing is division of RM.


 
 

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