Molten lava leaks out along the seams between tectonic plates in the earth's crust, at the sea bottom. Because the water is cold, the lava hardens quickly into rock, causing the sea floor to spread in both directions.
producing new crust, destroying old crust I hope it would help someone who needs the answerr :) 하하하
Sea Floor spreading
Seafloor Spreading.
They proved that the seafloor was spreading.
A diagram that shows how seafloor spreading works.
Gravity in the oceanic crust is responsible for seafloor spreading.
Sea Floor spreading
Seafloor Spreading.
They proved that the seafloor was spreading.
A diagram that shows how seafloor spreading works.
Seafloor spreading is triggered by a rift in a continental land mass.
Gravity in the oceanic crust is responsible for seafloor spreading.
Seafloor Spreading
Seafloor Spreading helped move the Continents to their current location.
When seafloor spreading occurs, it pushes the underground magma up though the new crust, creating a sort of volcano out of the new crust. Magma is a very important part in seafloor spreading. :]
Seafloor spreading at midoceanic ridges.
In 1960, seafloor spreading was hypothesized by Harry Hess of Princeton University. Seafloor spreading occurs at divergent boundaries and it is said to be the mechanism that operates along the oceanic ridge system to generate new seafloor. Thus, the result of seafloor spreading is the creation of new sea floor through the uplift of magma: magma raises from asthenosphere, new oceanic lithosphere moves from ridge, and it thickens, cools (becomes denser), and subsides.
Seafloor Spreading