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Earth's mantle is a rocky shell about 2,890 km (1,800 mi) thick that constitutes about 84 percent of Earth's volume. Two main zones are distinguished in the upper mantle: the inner asthenosphere composed of flowing rock in the state of plasticity, about 200 km thick, and the lowermost part of the lithosphere, composed of rigid rock, about 50 to 120 km thick. A thin crust, the upper part of the lithosphere, surrounds the mantle and is about 5 to 75 km thick. The mantle is divided into sections which are based upon results from seismology. These layers (and their depths) are the following: the upper mantle (starting at the Moho, or base of the crust around 7 to 35 km, downward to 410 km), the transition zone (410-660 km), the lower mantle (660-2891 km), and in the bottom of the latter region there is the anomalous D" layer with a variable thickness (on average ~200 km thick)
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Is the lower mantle of the Earth a solid or liquid?
the lower mantle of earth is a solid
Is the second layer of the earth the upper mantle or the lower mantle?
upper mantle
Is the earths lower mantle hot?
the average temperature for the Earth's lower mantle is 5400 degrees
What is the lower mantle made out of?
The earth's lower mantle is composed of an olivine mineral with a perovskite structure.
Which of earth layers are the thickest?
As measured by its thickness from upper boundary to lower boundary in a downward direction, the mantle is the thickest layer of the Earth.
Where is the lower mantle in the inside earth?
Well there is the crust, upper mantle, lower mantle, outer core, and the inner core. So, the lower mantle is the 3rd one down.
What is the earth's lower mantle?
The lower mantle of the Earth is the layer directly above the core. It is very dense, hot, and composed of thick rock.
Are convection currents found in the upper or lower mantle of earth?
The upper mantle
What are facts about earths upper mantle?
Temperature is about 2000 to 3000 degrees celsius maybe less.The mantle is hot but not the hottest layer.It is is the second layer of the Earth. The mantle is the thickest layer of the earth, it is the layer of the earth beneath the crust.Upper mantle and Lower mantle are the two parts of the mantle, The lower mantle is deeper and denser than the upper mantle .
Are there diamonds inside the earth?
Diamonds are formed deep within the earth's mantle.
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 Difference between the upper and lower mantle?
Working outwards from the centre: The Earth is believed to be formed of an inner core, outer core, inner mantle, outer mantle, and the crust. The mantle is two thousand miles thick and makes up more than three-quarters of the Earth's volume.
