What is the upper mantle of the earth made of?

Answer 1

The uppermost mantle is connected to the crust and forms the asthenosphere, which composes Earth's tectonic plates. The bulk of the mantle is composed of extremely hot rock under enormous pressure. The mantle may be very close to the melting point of the rock which composes it, or even partially melted. Mantle rock is higher in magnesium and iron than the crust. Rocks in the upper mantle are composed of the minerals olvine, garnet, spinel and pyroxene. With increasing depth, some of these minerals become unstable and are replaced by mineral polymorphs which have the same chemical composition, but different structures.

For more information on the composition of the mantle as a whole, please see the related question.

Answer 2

The upper mantle of the Earth is primarily composed of solid rock materials such as peridotite and pyroxene. These rocks are rich in magnesium and iron, with minerals like olivine and pyroxene being dominant. The upper mantle is located beneath the Earth's crust and extends to a depth of about 410-660 kilometers below the surface. This region is characterized by high temperatures and pressures, which contribute to the solid-state flow behavior known as mantle convection.

Answer 3

The upper mantle of the Earth is primarily made up of solid rock materials such as peridotite and dunite. These rocks are rich in minerals like olivine, pyroxene, and spinel. The upper mantle is located between the Earth's crust and the lower mantle.

Answer 4

After studying rock samples, scientists have determined that the mantle is made mostly of the elements silicon, oxygen, iron, and magnesium.

Answer 5

Hot lava that may sometimes seep onto earth through volcanoes. But the lava also creates volcanoes whether they are underwater or on land

Answer 6

Very hot rock under eminence pressures very close to melting point if not semi-melted.

Answer 7

Liquid rock mainly iron

Answer 8

Olivine.