it is known as sea floor spreading. this is when the oceanic plates diverge or move apart which causes the magma from the mantle to rise forming new sea floor.
Sea floor spreading is common along mid-ocean ridges such as the Mid-Atlantic Ridge and the East Pacific Rise. These are areas where tectonic plates are moving apart, allowing magma to rise from the mantle and create new oceanic crust.
Because of sea-floor spreading caused by the mid-ridge
sea-floor spreading
Yes, the sea floor near the mid-ocean ridge is young. As magma rises along the ridge, it solidifies to form new crust, creating a continuous process of crust formation and pushing older crust away from the ridge. This results in the oldest sea floor being farthest from the mid-ocean ridges.
Sea floor spreading
Ocean Ridge-on the sea floor. mid-ocean ridge in the ocean
to make volcanoes
Sea floor spreading
A rift valley will form
New Sea Floor
sea floor spreading or divergent boudary