asthenosphere - What does it mean?
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Definition of 'asthenosphere'Noun
( en-noun)
(geology) The zone of the Earth's upper mantle, below the lithosphere.
* 2003 , (Bill Bryson), A Short History of Nearly Everything , BCA, p. 192:
- To say that the lithosphere floats on top of the asthenosphere suggests a degree of easy buoyancy that isn't quite right.
* 2004 , (Richard Fortey), The Earth , Folio Society 2011, p. 79:
- The asthenosphere that underlies the surface plates is not liquid in any vernacular sense, although it is relatively plastic.
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