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How does the age of oceanic crust compare to the age of continental crust?
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∙ 12y ago
Oceanic crust is generally much younger. New ocean crust is constantly being formed.
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∙ 12y ago
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How does the age of the oldest continental crust compare to the age of the oldest ocean crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
What is the difference between the continental crust and the oceanic?
Continental crust is much older, granitic in nature, and less dense than oceanic crust which is composed of basaltic rock. Oceanic crust is in a constant state of creation and destruction through the processes of plate tectonics. Oceanic crust is also considerably less thick than continental crust.
How does the age of the oldest continental crust compare to the age of the oldest ocean crust-?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
What Compare and contrast oceanic crust with continental crust both types of crust?
The surface of the earth that is found on the continents is called the continental crust, which has a thickness of around 25 to 70 km. This crust is made up of igneous, sedimentary and metamorphic rocks, and that together make up the structure of our continents. As the name implies, oceanic crust is the floor of the oceans. Obviously, this crust is thinner than the continental crust. The major type of rocks making up oceanic crust is basalt. In general, the thickness of oceanic crust is around 7 to 10 km. what they have in common is continental and oceanic crust are both destroyed in subduction zones and lie atop Earth's mantle, though they differ in thickness, density, age and chemical composition.
How does the age of the oldest continental crust compared to the age of the oldest oceanic crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How does the age of the continental crust compare to The age of the oldest oceanic crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How would the age of the oldest rock on the continents compare with the age of the oldest rock on the seafloor?
The sea floor is young (the rocks are made at the mid oceanic ridges and spread out form there) while most of the continental rocks are older. This is because the continental crust floats on top of the oceanic crust and is therefore not recycled.
How does the age of the oldest continental crust compare to the age of the oldest ocean crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
What is the difference between the continental crust and the oceanic?
Continental crust is much older, granitic in nature, and less dense than oceanic crust which is composed of basaltic rock. Oceanic crust is in a constant state of creation and destruction through the processes of plate tectonics. Oceanic crust is also considerably less thick than continental crust.
How does the age of the oldest continental crust compare to the age of the oldest ocean crust-?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How does the age of the oldest continental crust compare to the age of oldest ocean crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
What Compare and contrast oceanic crust with continental crust both types of crust?
The surface of the earth that is found on the continents is called the continental crust, which has a thickness of around 25 to 70 km. This crust is made up of igneous, sedimentary and metamorphic rocks, and that together make up the structure of our continents. As the name implies, oceanic crust is the floor of the oceans. Obviously, this crust is thinner than the continental crust. The major type of rocks making up oceanic crust is basalt. In general, the thickness of oceanic crust is around 7 to 10 km. what they have in common is continental and oceanic crust are both destroyed in subduction zones and lie atop Earth's mantle, though they differ in thickness, density, age and chemical composition.
How does the age of the oldest continental crust compared to the age of the oldest oceanic crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How does the age of the oldest crust compare to the age of the oldest ocean crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How does the age of the oldest continental crust compare to the of the oldest ocean crust?
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
How is the oceanic crust recycled?
Convection in the mantle helps to recycle the oceaniccrust, not all of Earth's crust. There are two different parts to the crust. Oceanic and Continental. The Oceanic gets recycled, so when Scientists measure the age of the rocks, they're young.
How do the two types of crust vary?
Their main differences are in thickness, composition, density and age.Oceanic crust is thinner (5-10 km thick) than continental crust (20-70 km thick).Oceanic crust is composed of minerals that have higher concentrations of iron and magnesium (Mafic minerals) than those of the continental crust (which is richer in aluminum and silica - Felsic minerals).The rocks that make up the oceanic crust are typically more dense (3300 kg/m3) than those that make up the continental crust (2700 kg/m3).Oceanic crust is as a rule much younger than continental crust; the oldest oceanic crust is rarely over 200 million years in age, whereas the continental crust can exceed 3 billion years in age.
