Editing Glacier (section)

== Isostatic rebound ==
[[File:Glacier weight effects LMB.png|Isostatic pressure by a glacier on the Earth's crust|left|thumb|300x300px]]
Large masses, such as ice sheets or glaciers, can depress the crust of the Earth into the mantle.<ref>{{Cite book|url=https://books.google.com/books?id=2UYrRG2ocHoC&q=Large+masses,+such+as+ice+sheets+and+glaciers,+can+depress+the+crust+of+the+Earth+into+the+mantle.&pg=PT95 |title=Global Warming Cycles: Ice Ages and Glacial Retreat |last=Casper |first=Julie Kerr |date=2010 |publisher=Infobase Publishing |isbn=978-0-8160-7262-0 |language=en |via=[[Google Books]]}}</ref> The depression usually totals a third of the ice sheet or glacier's thickness. After the ice sheet or glacier melts, the mantle begins to flow back to its original position, pushing the crust back up. This [[post-glacial rebound]], which proceeds very slowly after the melting of the ice sheet or glacier, is currently occurring in measurable amounts in [[Scandinavia]] and the [[Great Lakes]] region of North America.

A geomorphological feature created by the same process on a smaller scale is known as ''dilation-faulting''. It occurs where previously compressed rock is allowed to return to its original shape more rapidly than can be maintained without faulting. This leads to an effect similar to what would be seen if the rock were hit by a large hammer. Dilation faulting can be observed in recently de-glaciated parts of Iceland and Cumbria.