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What is the compition for the crust?
Crust is made up of mainly granite, a felsic rock wit a lower density than basalt, what makes up the ocean's crust, thus why the continental crust rises up compared to ocean crust.
Are new continental crust formed at the mid Ocean Ridges?
Yes, new continental crust is not formed at mid-ocean ridges; instead, these ridges are primarily sites for the formation of new oceanic crust. At mid-ocean ridges, tectonic plates diverge, allowing magma from the mantle to rise and solidify, creating new oceanic crust. Continental crust is formed through different geological processes, such as subduction and continental collision, which occur away from mid-ocean ridges.
What is the name of the crust not under the ocean?
The crust not under the ocean is called continental crust. It is thicker and less dense compared to oceanic crust and forms the landmasses on Earth's surface.
What are the two kinds of crust?
Earths crust is the outer shell of our planet. The Earth has two types of crust. Continental crust contains igneous, sedimentary and metamorphic rocks that covers the continents. Oceanic crust contains igneous basalt rocks derived from the upper mantle that cover the all the ocean floors. The igneous rocks are covered with sediments carried into the oceans from large rivers like the Amazon and Mississippi Rivers.
Why the ocean crust contains rocks that are more dense than the rocks found on land?
The ocean crust is primarily composed of basalt, a dense volcanic rock, while the continental crust contains lighter granitic rocks. This difference in composition contributes to the greater density of oceanic crust compared to continental crust. Additionally, oceanic crust is generally thinner and denser due to the processes of seafloor spreading and subduction, where denser materials sink beneath lighter continental materials. As a result, the ocean crust is consistently denser than the rocks found on land.
What is a continental crust?
the continental crust is the plate crust formed under the continent (less density) as opposed to oceanic crustformed under the ocean(higher density)
What is a Earth crust?
the continental crust is the plate crust formed under the continent (less density) as opposed to oceanic crustformed under the ocean(higher density)
Does earth's crust have the same density?
No, the density of Earth's crust varies depending on the type of rock and location. Generally, continental crust is less dense than oceanic crust. Continental crust is composed mostly of granite and has an average density of about 2.7 g/cm^3, while oceanic crust, which is mainly basalt, has an average density of about 3.0 g/cm^3.
What is the compition for the crust?
Crust is made up of mainly granite, a felsic rock wit a lower density than basalt, what makes up the ocean's crust, thus why the continental crust rises up compared to ocean crust.
Ocean crust dives below continental crust because of what?
Because of its higher density, and gravity. One part of plate tectonic theory.
Oceanic crust is lighter than the continental crust?
No, the oceanic crust is denser. That's why the land areas "float" so much higher than the ocean bedrock.
How is the earths crust under the oceans different from the crust below continents?
The crust under the ocean is thinner than continental crust. Ocean crust is also, on average, richer in minerals containing iron and magnesium, giving it a greater density than continental crust. Imagine placing two slabs of wood next to each other in a swimming pool. The first slab will be thin piece of oak and the second will be thicker piece of pine. The pine, being less dense than the oak, will stick up higher in the water and at the same time will also ride lower in the water than the oak. Similarly, both ocean crust and continental crust float on the mantle (more specifically the asthenosphere which is a layer in the upper mantle). Ocean crust is like the oak and continental crust is like the pine. Ocean crust is composed largely of the igneous rocks basalt, gabbro, and peridotite. Continental crust is much more diverse in its composition, but on average is similar in density to granite.
How is earth's crust under the oceans different from the crust below the continents?
The crust under the ocean is thinner than continental crust. Ocean crust is also, on average, richer in minerals containing iron and magnesium, giving it a greater density than continental crust. Imagine placing two slabs of wood next to each other in a swimming pool. The first slab will be thin piece of oak and the second will be thicker piece of pine. The pine, being less dense than the oak, will stick up higher in the water and at the same time will also ride lower in the water than the oak. Similarly, both ocean crust and continental crust float on the mantle (more specifically the asthenosphere which is a layer in the upper mantle). Ocean crust is like the oak and continental crust is like the pine. Ocean crust is composed largely of the igneous rocks basalt, gabbro, and peridotite. Continental crust is much more diverse in its composition, but on average is similar in density to granite.
How is the earth's crust under oceans different from the crust below the continents?
The crust under the ocean is thinner than continental crust. Ocean crust is also, on average, richer in minerals containing iron and magnesium, giving it a greater density than continental crust. Imagine placing two slabs of wood next to each other in a swimming pool. The first slab will be thin piece of oak and the second will be thicker piece of pine. The pine, being less dense than the oak, will stick up higher in the water and at the same time will also ride lower in the water than the oak. Similarly, both ocean crust and continental crust float on the mantle (more specifically the asthenosphere which is a layer in the upper mantle). Ocean crust is like the oak and continental crust is like the pine. Ocean crust is composed largely of the igneous rocks basalt, gabbro, and peridotite. Continental crust is much more diverse in its composition, but on average is similar in density to granite.
Why is the ocean crust thinner than the continental crust?
It is not. The oceanic crust is thinner than the continental crust!
Ocean crust dives below continental crust because?
Ocean crust is denser
How is the earths crust under the oceans different from the crusts below the continents?
The crust under the ocean is thinner than continental crust. Ocean crust is also, on average, richer in minerals containing iron and magnesium, giving it a greater density than continental crust. Imagine placing two slabs of wood next to each other in a swimming pool. The first slab will be thin piece of oak and the second will be thicker piece of pine. The pine, being less dense than the oak, will stick up higher in the water and at the same time will also ride lower in the water than the oak. Similarly, both ocean crust and continental crust float on the mantle (more specifically the asthenosphere which is a layer in the upper mantle). Ocean crust is like the oak and continental crust is like the pine. Ocean crust is composed largely of the igneous rocks basalt, gabbro, and peridotite. Continental crust is much more diverse in its composition, but on average is similar in density to granite.
