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The Earth's upper mantle is composed of rocks that have higher concentrations of mafic minerals (containing iron and magnesium) and lower in concentrations of the felsic minerals (aluminum and silica) than the rocks of Earth's crust.
The concentrations of the above elements therefore mean that the Earth's mantle is composed of a series of minerals that are predominately calcium / iron / magnesium aluminum silicates.
Such as:
- Olivine - (Mg,Fe)2SiO4
- Pyroxene - X(Si,Al)2O6, where X represents either calcium, sodium, iron or magnesium
- Spinel - MgAl2O4
- Garnet - X3Y2(SiO4)3 where X and Y can be a mixture of aluminum, iron, calcium, manganese or magnesium.
In the upper mantle, these minerals form the rocks types Peridotite, Dunite (Olivine-rich Peridotite), and Eclogite.
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago•Thet Low•The Lower Mantle is made of Olivine, Pyroxene, and Feldspar.
v •The Lower Mantle is made of Olivine, Pyroxene, and Feldspar.
er Mantle is made of Olivine, Pyroxene, and Feldspar.
Wiki User
∙ 11y agoMost of Earth's lower mantle is made of a magnesium silicate mineral called perovskite. In 2004, earth scientists discovered that under the conditions of the lower mantle, perovskite can change into a high-pressure form, which they dubbed post-perovskite. Since its discovery, post-perovskite has been geophysicists' favorite candidate to explain the composition of a mysterious layer that forms the bottom of Earth's lower mantle.
Known to earth scientists as D" (dee-double-prime), this layer averages 120 miles thick and lies directly above Earth's core. D" was named in 1949 by seismologist Keith Bullen, who found the layer from the way earthquake waves travel through the planet's interior. But the nature of D" has eluded scientists since Bullen's discovery.
Wiki User
∙ 12y agoWiki User
∙ 13y agothe lower core is mainly made up of helium and iron
Wiki User
∙ 10y agoThe earths mantle is less dense and it's very hot.
Wiki User
∙ 12y agoit is dead bodies
Wiki User
∙ 9y agoThe lower mantle is a part of the mantle.
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What are the five layers that make up the earth's interior and exterior?
Inner Core , Outer Core , Lower Mantle, Upper Mantle, Crust ;) ~Lucas V.
How do you make a sentence with upper mantle?
The crust and upper mantle make up the earth.
What 2 layers make up the Earth's crust?
the earths crust and the rigid upper mantle
The crust and uppermost mantle make up the rigid outer layer of Earth what is it called?
Together the crust and upper mantle make the lithosphere.
What is Earth's upper mantle?
The asthenosphere is the upper part of Earth's mantle. It is partially molten (plastic rheology) and mechanically detached from the lithosphere, which is mostly the Earth's crust (but also a little bit of upper mantle). The density of the upper mantle is your mom! (yo mamma!)
Is the lower mantle of the earth more solid than the upper mantle?
I think the lower mantle of the earth is mostly solid because even though the heat is extremely high, the pressureis high enough to make it a solid.
What parts of the earth make the asthenosphere?
The middle and lower mantle makes up the asthenosphere.
Name the three elements that make up most of earth's mantle?
silicoln oxyen iron
What are the five layers that make up the earth's interior and exterior?
Inner Core , Outer Core , Lower Mantle, Upper Mantle, Crust ;) ~Lucas V.
How do you make a sentence with upper mantle?
The crust and upper mantle make up the earth.
What are the four layers that make up Earth's atmosphere?
Toposphere, Stratosphere, Mesosphere and Thermosphere
What three parts that make up Earth's mantle?
The three parts that make up the Earths mantle are the crust, core, and mantle.
What are the three main layers that's make up earth are the?
the core, the mantle and the crust
What 2 layers make up the Earth's crust?
the earths crust and the rigid upper mantle
The crust and uppermost mantle make up the rigid outer layer of Earth what is it called?
Together the crust and upper mantle make the lithosphere.
What elements make up most of the mantle.?
Nearly every element on the Periodic Table can be found in the mantle. The most abundant elements are iron, oxygen, silicon, magnesium, calcium, and aluminum.
What elements make up most of the mantle?
Nearly every element on the Periodic Table can be found in the mantle. The most abundant elements are iron, oxygen, silicon, magnesium, calcium, and aluminum.
