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The crust is the Ocean floor. There is Oceanic Crust, And then There is Continental Crust.
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∙ 12y ago
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Why are the oldest parts of the ocean floor no older than about 200 million years.?
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
What is the crust like at mid ocean ridges?
Oceanic crust is thinner than continental crust, so i would say it's pretty thin. Sorry if that's not enough information, but it's all i know.
Describes the composition of the ocean floor?
Apex users: Basalt covered in sediment
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.
How do the sediments on the ocean floor vary in relation to an ocean ridge?
Sediments become thicker away from the mid ocean ridge. This is because the oceanic crust away from the mid ocean ridge is older than the crust close to it, so sediment has had more time to accumulate.
Why is the ocean crust thinner than the continental crust?
It is not. The oceanic crust is thinner than the continental crust!
Does anything make the earth's crust appear to be thicker?
The crust under the ocean floor is thinner than the crust under mountain....if thats what your asking....hope it helped!
Is the earth's crust thicker under the ocean?
Oceanic crust is thinner and denser than continental crust.
Is the oceanic crust near a mid-ocean ridge thicker or thinner than the oceanic crust away from the mid-ocean ridge?
The Oceanic Crust close to the Mid Ocean Ridge is thinner than that Oceanic Crust far away from the ridge. This is due to tensional forces, as a result of crustal expansion and rock fracturing during the formation of the ridge.the oceanic crust is thinner
Is the continental crust thinner than the oceanic crust?
It is not. The oceanic crust is thinner than the continental crust!
Is the mantle thicker or thinner than the crust?
The crust is much thinner than the mantle.
Is the crust thinner or thicker than the mantle?
The crust is much thinner than the mantle.
What is the compositions of the ocean floor?
The ocean floor is composed of basaltic rocks. Very mafic (dark) in color. It is thinner yet heavier than continental rock.
Why are the oldest parts of the ocean floor no older than about 200 million years.?
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
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
What is the definition of continental crust?
The definition of continental crust would be the top crust that Is the first layer of crust made of rock and is the thinest layer +++ Is this in the correct category? The continental crust is that forming the bulk of the continents, primarily granite, and thicker than the basalt ocean-floor crust. Both float on the thinner aesthenosphere, the top layer of the Mantle which forms the planet's bulk.
Oceanic crust is what than continental crust?
Oceanic crust is thinner and denser than continental crust.
