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The uppermost mantle rock is Peridotite, which is mostly olivine and pyroxene but varies somewhat in chemical composition. Generally it is a coarse grained greenish rock. The name peridotite is derived from the gemstone peridot, which is pale green olivine.
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What is the state of the upper mantle?
The upper mantle is a solid layer of rock located beneath the Earth's crust. It is part of the Earth's mantle and extends from the base of the crust to a depth of about 660 kilometers. The upper mantle is mostly composed of peridotite, a dense rock made up of minerals like olivine and pyroxene.
What rock can flow like a liquid?
A rock that can flow like a liquid is called a type of rock called "viscous rock," such as granite or basalt. These rocks exhibit a plastic-like behavior at high temperatures and pressures, allowing them to flow over long periods of time. This flow is known as creep.
What rock makes up the crust and upper mantle?
The predominant rock in the Earth's crust and upper mantle is called silicate rock, composed mainly of silicon and oxygen. This type of rock is known as "peridotite" in the mantle and "granite" in the crust.
What rock does the upper mantle contain?
The upper mantle consists mainly of ultramafic rocks such as peridotite, which is rich in olivine, pyroxenes, and feldspar. These rocks are dense and typically dark in color due to their composition.
What types of rock is in the mantle?
the mantle is made up of solid hot rock.
How do upper mantle rock differ from lower mantle rock?
the upper-mantle rocks are heavier while the lower mantle rocks are semisolid like melted plastic
How do upper mantle rocks differ from lower mantle rock?
the upper-mantle rocks are heavier while the lower mantle rocks are semisolid like melted plastic
What is the state of the upper mantle?
The upper mantle is a solid layer of rock located beneath the Earth's crust. It is part of the Earth's mantle and extends from the base of the crust to a depth of about 660 kilometers. The upper mantle is mostly composed of peridotite, a dense rock made up of minerals like olivine and pyroxene.
What is the state of matter of the Earth's upper mantle?
The Earth's upper mantle is composed of solid rock that flows through liquid rock, also known as lava.
What part of the mantle is made of soft rock that bends like plastic.?
A portion of the upper mantle known as the asthenosphere.
Why is the lower mantle denser the the upper mantle?
The lower mantle is under greater pressure than the upper mantle, compressing the rock into a denser form.
Where does a peridotite rock come from?
Peridotite rock comes from the Earth's mantle, specifically the upper part of the mantle known as the upper mantle. It is formed from the cooling and solidification of magnesium- and iron-rich magma beneath the Earth's surface. Peridotite is typically brought to the surface through processes like mantle upwelling or tectonic movement.
What rock can flow like a liquid?
A rock that can flow like a liquid is called a type of rock called "viscous rock," such as granite or basalt. These rocks exhibit a plastic-like behavior at high temperatures and pressures, allowing them to flow over long periods of time. This flow is known as creep.
What rock makes up the crust and upper mantle?
The predominant rock in the Earth's crust and upper mantle is called silicate rock, composed mainly of silicon and oxygen. This type of rock is known as "peridotite" in the mantle and "granite" in the crust.
What is the layer of softer rock in the upper mantle?
lithosphere
What is earths upper mantle composition?
hard rock
What rock does the upper mantle contain?
The upper mantle consists mainly of ultramafic rocks such as peridotite, which is rich in olivine, pyroxenes, and feldspar. These rocks are dense and typically dark in color due to their composition.
