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On geologic time scales, new oceanic crust is constantly being formed ad mid-ocean ridges while older crust is destroyed at subduction zones. The crust forms at the ridge and is carried away by the movement of the plate as new crust forms to take its place. The oceanic crust is youngest new a mid ocean ridge and oldest far away from it.
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What does ocean crust mean in science?
The oceanic crust is the part of the earth's crust that is below the ocean. The rock that makes up the oceanic crust is about 200 million years old.
Where is the new ocean crust formed?
mid-ocean ridge
Does theory continental drift state that new ocean crust is formed at ocean ridges and destroyed at deep sea trenches?
No, the theory is that Seafloor spreading state that the new ocean crust is formed at ocean ridges and is destroyed at deep sea trenches.
When the ocean floor collides with a crustal plate what happens?
it subducts underneath the crustal plate
Continental and oceanic crust?
The two parts of the crust that make up the earth. The continental supports land while the oceanic crust is at the bottom of the ocean. - Anonymous
How can the crust be different ages?
On geologic time scales, new oceanic crust is constantly being formed ad mid-ocean ridges while older crust is destroyed at subduction zones. The crust forms at the ridge and is carried away by the movement of the plate as new crust forms to take its place. The oceanic crust is youngest new a mid ocean ridge and oldest far away from it.
Isochron maps indicate what about the seafloor of the ocean crust?
Isochron maps indicate the age of the seafloor on the ocean crust. They show patterns of different ages of the oceanic crust moving away from mid-ocean ridges, where new crust is being formed. Younger crust is found closer to the ridges, while older crust is found farther away.
How is the depth of ocean crust will related to the age of the ocean?
The depth of ocean crust is generally related to its age due to the process of thermal contraction and isostasy. Younger oceanic crust, formed at mid-ocean ridges, is hotter and less dense, resulting in a shallower depth. As the crust ages, it cools, becomes denser, and sinks deeper into the mantle, leading to greater ocean depths over time. Thus, older ocean crust is typically found at greater depths compared to younger crust.
How do the ages of the rocks making up continents and those making up the ocean bottom differ?
Continental crust is normally much older than oceanic crust.
Ocean crust dives below continental crust because?
Ocean crust is denser
Why the crust is thinner than the ocean floor?
The Earth's crust is thinner than the ocean floor because the oceanic crust is formed at mid-ocean ridges where heat from the mantle creates new crust through volcanic activity. This process creates younger, hotter, and thinner crust in the ocean compared to the older and thicker continental crust.
Crust under the ocean is called?
Crust under the oceans is called oceanic crust.
What is ocean crust?
it is basalt or oceonic crust
What is the crust beneath the ocean?
Oceanic Crust
What crust supports the ocean?
Oceanic crust
WHAT is the the composition of earth's crust?
Many different minerals are found in oceanic crust. Feldspar, basalt, pyroxene, and other molten rock materials make up the composition of the ocean's crust.
What crust makes up the ocean floor?
The ocean floor is mainly composed of basaltic crust known as oceanic crust. This crust is thinner and denser than continental crust and is formed through volcanic activity at mid-ocean ridges.
