What is Asthenosphere?
[[File:Earth-crust-cutaway-english.png|thumb|200px|[[Earth]] cutaway]] The '''asthenosphere''' is part of [[earth]]'s [[Mantle (geology)|mantle]]. It is about 100&nbsp;km to 350&nbsp;km under the surface.<ref>{{Cite web |title=St. Diego State University Department of Geological Sciences |url=http://www.geology.sdsu.edu/how_volcanoes_work/Heat.html |access-date=2007-06-01 |archive-date=2011-03-03 |archive-url=https://web.archive.org/web/20110303023207/http://www.geology.sdsu.edu/how_volcanoes_work/Heat.html |url-status=dead }}</ref> It is the lower part of the upper mantle, and behaves as a hot [[viscosity|viscous]] liquid. It consists of hot, weak material that can be deformed like [[Silly Putty|silly putty]]. That means it is capable of gradual [[Flux|flow]]. It is under the [[lithosphere]]. == References == {{Reflist}} {{science-stub}} [[Category:Structure of the Earth]]