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  2. Facts about the upper mantle include12:
    • The upper mantle extends from the crust to a depth of about 410 kilometers (255 miles).
    • The upper mantle is mostly solid, but its more malleable regions contribute to tectonic activity.
    • Two parts of the upper mantle are often recognized as distinct regions in Earth’s interior: the lithosphere and the asthenosphere.
    • The upper mantle is up to 670km below the Earth’s surface.
    • The lower part of the upper mantle is made from both solid and melted rock (liquid), while the rock in the upper region is stiffer, because it’s cooler.
    • The upper mantle is composed of iron, oxygen, silicon, magnesium and aluminium.
    • The temperature of the upper mantle ranges from 1,400°C to 3,000°C.
    Learn more:
    The upper mantle extends from the crust to a depth of about 410 kilometers (255 miles). The upper mantle is mostly solid, but its more malleable regions contribute to tectonic activity. Two parts of the upper mantle are often recognized as distinct regions in Earth’s interior: the lithosphere and the asthenosphere.
    www.nationalgeographic.org/encyclopedia/mantle/
    Upper Mantle Temperature: 1,400°C – 3,000°C State: liquid / solid Composition: iron, oxygen, silicon, magnesium and aluminium This layer is up to 670km below the Earth’s surface. The lower part of the upper mantle is made from both solid and melted rock (liquid), while the rock in the upper region is stiffer, because it’s cooler.
    www.natgeokids.com/uk/discover/geography/physi…
     
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    Upper mantle - Wikipedia

    The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (at about 10 km (6.2 mi) under the oceans and about 35 km (22 mi) under the continents) and ends at the top of the lower mantle at 670 km (420 mi). Temperatures range from approximately 500 K (227 °C; … See more

    The density profile through Earth is determined by the velocity of seismic waves. Density increases progressively in each layer, largely … See more

    Temperatures range from approximately 500 K (227 °C; 440 °F) at the upper boundary with the crust to approximately 4,200 K (3,930 °C; 7,100 °F) at the core-mantle boundary. … See more

    The seismic data is not sufficient to determine the composition of the mantle. Observations of rocks exposed on the surface and other evidence reveal that the upper mantle is See more

    Because of the temperature difference between the Earth's surface and outer core and the ability of the crystalline rocks at high pressure and … See more

    Exploration of the mantle is generally conducted at the seabed rather than on land because of the oceanic crust's relative thinness as … See more

     
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  5. Mantle - National Geographic Society

    WEBApr 30, 2024 · Upper Mantle. The upper mantle extends from the crust to a depth of about 410 kilometers (255 miles). The upper mantle is mostly solid, but its more malleable regions contribute to tectonic activity. Two …

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    WEBFeb 2, 2023 · The upper mantle moves large areas of crust, called tectonic plates, resulting in the formation of volcanoes, mountains, or earthquakes. Between the upper and lower mantle, there is the presence of the …

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    WEBEarth's upper mantle is divided into two major rheological layers: the rigid lithosphere comprising the uppermost mantle (the lithospheric mantle), and the more ductile asthenosphere, separated by the lithosphere …

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    WEBFeb 15, 2021 · The Lithosphere is the rocky outer portion of the Earth, consist of the crust and upper mantle (about the upper 60 miles [100 km] below the Earth's surface). It is the solid (more brittle) zone of the earth …

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