LITHOSPHERE
Lithosphere
The lithosphere is the rigid outermost shell of a rocky planet defined on the basis of the mechanical properties. On Earth, it comprises the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater. The outermost shell of a rocky planet defined on the basis of the chemistry and mineralogy is a crust.The above text is a snippet from Wikipedia: Lithosphere
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lithosphere
Noun
The above text is a snippet from Wiktionary: lithosphere
and as such is available under the Creative Commons Attribution/Share-Alike License.