Lithosphere consists of

by

Lithosphere consists of

upper and lower mantle.
crust and core.
crust and uppermost solid mantle.
mantle and core.
This question was previously asked in
UPSC NDA-2 – 2019
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The Earth’s internal structure can be described in terms of both chemical composition and physical (rheological) properties. The lithosphere is defined by its physical properties; it is the rigid, outermost shell of the Earth. It consists of the crust (both continental and oceanic) and the uppermost, rigid part of the mantle (also known as the lithospheric mantle). It sits atop the asthenosphere, which is a more ductile layer of the upper mantle.
The lithosphere is typically about 100 km thick, though its thickness varies significantly, being thinner under oceanic crust (around 50-100 km) and thicker under continental crust (up to 200 km or more beneath old mountain ranges). The movement of the lithospheric plates over the asthenosphere is the basis of plate tectonics.

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