Explain how ocean floor rocks and sediments provided evidence of seafloor spreading it has deep trenches and high ridges.
Why is sea floor spreading like a conveyor belt.
Why is the hypothesis of seafloor spreading like a conveyor belt.
So if you took samples from the sea floor the further from this boundary you are the older the rock is.
They envisaged a conveyor belt model where new ocean crust formed at the ridge is imprinted with the prevailing magnetic field at the time and moves outwards as it gets older.
New ocean floor forms along cracks in the ocean crust as molten material erupts from the mantle spreading out and pushing older rocks to the sides of the crack.
As a result the ocean floors move like conveyor belts carrying the continents along with them.
In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.
New magma is being brought up from below the crust to continuously fill the crack.
It has to do with plate tectonics.
In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.
At ocean ridges are the longest mountain chains on earth s surface.
As a result the ocean floors move like conveyor belts carrying the continents.
It is like a conveyor belt because the two plates are pushing apart from each other like a conveyor belt divergence.
Fonts 17 2 questions describe the topography of the seafloor.
S concept of sea floor spreading at mid ocean ridges.
Reversals of the field led to the symmetrical pattern of stripes.