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Earth cutaway

The asthenosphere is part of earth's mantle. It is about 100 km to 350 km under the surface.[1] It is the lower part of the upper mantle, and behaves as a hot viscous liquid.

It consists of hot, weak material that can be deformed like silly putty. That means it is capable of gradual flow. It is under the lithosphere.

References[change | change source]

  1. "St. Diego State University Department of Geological Sciences". Archived from the original on 2011-03-03. Retrieved 2007-06-01.