0
The earth's lower mantle is composed of an olivine mineral with a perovskite structure.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What causes melting at mid-ocean ridges?
Mid-ocean ridges occur at diverging plate boundaries. Convection currents in the lower mantle pull the plates away from each other . As the plates move apart, lower mantle material is drawn toward Earth's surface. The rock of the lower mantle is hot, flexible, and solid. This rock is solid because of the great pressure of the layers above it. However, as the rock of the lower mantle rises, the pressure drops and the material melts.
What is the lower layer of the mantle called?
The mesosphere
Is the lower part of the mantle called the lithosphere or asthenosphere?
The lower part of the mantle is actually names the mesosphere. It is overlain by the asthenosphere which is part of the upper mantle and this in turn is overlain by the lithosphere which is made up of the very uppermost mantle and the crust.
What is is the meaning of Earth's lower mantle?
The lower mantle is the portion of the Earth's mantle layer that extends from a depth of 670 km to 2798 km from the surface. Minerals present in the rock of the upper mantle become unstable at these depths. Little is known about the lower mantle other than that seismic waves indicate it is fairly homogenous in lithology and therefore density.
What contains the lower mantle?
The mantle extends to the core-mantle interface at approximately 2900 km depth. Thus, the mantle contains the lower portion of the lithosphere, the asthenosphere, and the mesosphere. The crust is made of the upper portion of the lithosphere.
What is the composition of the Earth lower mantle?
•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.
What is the lower mantle made out of?
The earth's lower mantle is composed of an olivine mineral with a perovskite structure.
What is the material of lower mantle?
esta echa de rocka deretida
Which layer of earth is made up partly of crust and partly of mantle material?
the lithosphere is the full crust and top part of the mantle but the asthenosphere is just a little bit above the middle of the mantle but not any of he crust
How is pressure involved in melting mantle material at a mid-ocean ridge?
Pressure is involved because as the plates move apart, lower mantle material is hot, flexible, and solid. This rock is solid because of the great pressure of the layers above it. However. as the rock of the lower mantle rises, the pressure drops and the material melts.
What causes melting at mid-ocean ridges?
Mid-ocean ridges occur at diverging plate boundaries. Convection currents in the lower mantle pull the plates away from each other . As the plates move apart, lower mantle material is drawn toward Earth's surface. The rock of the lower mantle is hot, flexible, and solid. This rock is solid because of the great pressure of the layers above it. However, as the rock of the lower mantle rises, the pressure drops and the material melts.
What is the lower layer of the mantle called?
The mesosphere
What is the earth's lower mantle made of?
The earth's crust lower mantle is made up of silicate perovskites and ferropericlase. While the silicate perovskites are the names given to calcium silicates and magnesium iron, ferropericlase is an oxide of magnesium/iron. The lower mantle is at a depth that ranges from 650 kilometers to 2,890 kilometers.
Is the lower part of the mantle called the lithosphere or asthenosphere?
The lower part of the mantle is actually names the mesosphere. It is overlain by the asthenosphere which is part of the upper mantle and this in turn is overlain by the lithosphere which is made up of the very uppermost mantle and the crust.
What is above the lower mantle?
The middle mantle is just above the lower mantle.
What is the lower part of the mantle callet?
The Lower Mantle
What is is the meaning of Earth's lower mantle?
The lower mantle is the portion of the Earth's mantle layer that extends from a depth of 670 km to 2798 km from the surface. Minerals present in the rock of the upper mantle become unstable at these depths. Little is known about the lower mantle other than that seismic waves indicate it is fairly homogenous in lithology and therefore density.
