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2. Mantle convection - Wikipedia

   en.wikipedia.org/wiki/Mantle_convection

   On Earth, the Rayleigh number for convection within Earth's mantle is estimated to be of order 10 7, which indicates vigorous convection. This value corresponds to whole mantle convection (i.e. convection extending from the Earth's surface to the border with the core). On a global scale, surface expression of this convection is the tectonic ...

3. Heat-pipe tectonics - Wikipedia

   en.wikipedia.org/wiki/Heat-pipe_tectonics

   Melts are produced when mantle rocks bear temperatures between 1100 and 2400 °C at corresponding depths (pressure varies the melting temperature) with the presence of water. [ 11 ] [ 12 ] When melts reach surface via vertical vents, they cool down and solidify forming mafic or ultramafic rocks which are rich in iron and magnesium .

4. Internal structure of Earth - Wikipedia

   en.wikipedia.org/wiki/Internal_structure_of_Earth

   The pressure at the bottom of the mantle is ≈140 GPa (1.4 Matm). [24] The mantle is composed of silicate rocks richer in iron and magnesium than the overlying crust. [25] Although solid, the mantle's extremely hot silicate material can flow over very long timescales. [26] Convection of the mantle propels the motion of the tectonic plates in the

5. Subcontinental lithospheric mantle - Wikipedia

   en.wikipedia.org/wiki/Subcontinental...

   It is expected then that the modern subcontinental mantle is a former, melt-depleted mantle wedge. If the connection between continental crust and the subcontinental lithospheric mantle does not exist, and rather a different Earth process formed both reservoirs, then it further complicates the mechanisms for how the Archean subcontinental ...

6. Earth's mantle - Wikipedia

   en.wikipedia.org/wiki/Earth's_mantle

   The internal structure of Earth. Earth's mantle is a layer of silicate rock between the crust and the outer core.It has a mass of 4.01 × 10 24 kg (8.84 × 10 24 lb) and makes up 67% of the mass of Earth. [1]

7. Lid tectonics - Wikipedia

   en.wikipedia.org/wiki/Lid_tectonics

   Many characteristics of a planetary body influence the presence and degree of lid tectonics. The temperature of a body's core–mantle boundary, and the presence of water, strongly affect the rheological, composition, and thermal diagnostics of lid tectonics. The lid will not participate in the underlying convection of the mantle.

8. AOL Video - Serving the best video content from AOL and ...

   www.aol.com/video/view/cat-can-t-climb-fireplace...

   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

9. Mantle (geology) - Wikipedia

   en.wikipedia.org/wiki/Mantle_(geology)

   The silicate mantle of the Earth's moon is approximately 1300–1400 km thick, and is the source of mare basalts. [4] The lunar mantle might be exposed in the South Pole-Aitken basin or the Crisium basin. [4] The lunar mantle contains a seismic discontinuity at ~500 kilometers (310 miles) depth, most likely related to a change in composition. [4]