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Is the earth's crust older than the ocean crust?
The continental crust (one component of the crust) is, on average, much older than the oceanic crust.
Why are the oldest parts of the earth's crust found on continents?
The older peices of the Earths crust are significantly lighter than the newer peices, (i.e. oceanic plates / basalt) forcing them to the surface.
Does the fact that ocean crust is older the farther away it is from an ocean ridge support the theory of plate tectonics?
Yes. New ocean crust is being formed at the mid ocean ridges (MORs) resulting in the older crust being pushed farther away, moving the plates towards a subduction zone. MORs divide 2 plates.
How does the age of seafloor sediments change with increasing distance from the ocean range?
At ocean spreading ridges, new oceanic crust is formed. The magma that forms this new crust emerges from the ridge and pushes the pre-existing rocks away from the ridge laterally. This results in a strip of new rock cutting through the older rock. As formation of the crust continues, the older rocks will be pushed further away from the ridge, while younger, newly produced rocks will occupy the area closest to the ridge.
What is older the continents or the ocean floor?
On average, continents are older than ocean basins. Due to the action of plate tectonics, ocean crust is being formed and destroyed continuously. The oldest oceanic crust is about 200 million years old, whereas continents, which are less dense than oceanic crust and tend not to be subducted into the mantle, can be more than 3,000 million years old in places.
Why is the oldest seafloor crust found farthest from a mid-ocean ridge?
because the older crust is pushed out by the newer crust that is forming
Why does older crust sink under newer crust at convergent boundary?
Density. Older is usually denser.
Is Older oceanic crust found at the center of mid-ocean ridge?
No farther away
Is the earth's crust older than the ocean crust?
The continental crust (one component of the crust) is, on average, much older than the oceanic crust.
Why is the oldest rock at the bottom of the ocean?
The oldest rock is found in the continental crust. The youngest rock is found in the oceanic crust. This is because the ocean floor is recycled every 160 million years or so in the process of plate tectonics.
What evidence can prove that the ocean floor was moving?
Oceanic crust that was farther away from a mid-ocean ridge was older that crust closer to the ridge
Is oceanic crust near the mid-ocean ridge older thean oceanic crust farther away from the ridge?
Its oceanic crust
What evidence proved the ocean floor was moving?
oceanic crust that was farther away from a mid-ocean ridge was older than crust closer to the ridge
Why are the oldest parts of the earth's crust found on continents?
The older peices of the Earths crust are significantly lighter than the newer peices, (i.e. oceanic plates / basalt) forcing them to the surface.
Does the fact that ocean crust is older the farther away it is from an ocean ridge support the theory of plate tectonics?
Yes. New ocean crust is being formed at the mid ocean ridges (MORs) resulting in the older crust being pushed farther away, moving the plates towards a subduction zone. MORs divide 2 plates.
Is oceanic crust near a mid ocean ridge older than oceanic crust far away?
Sorry, you have it entirely reversed.
How does the age of seafloor sediments change with increasing distance from the ocean range?
At ocean spreading ridges, new oceanic crust is formed. The magma that forms this new crust emerges from the ridge and pushes the pre-existing rocks away from the ridge laterally. This results in a strip of new rock cutting through the older rock. As formation of the crust continues, the older rocks will be pushed further away from the ridge, while younger, newly produced rocks will occupy the area closest to the ridge.
