Editing Glacier (section)

=== Moraines ===
[[File:MorainesLakeLouise.JPG|thumb|Glacial moraines above [[Lake Louise (Alberta)|Lake Louise]], Alberta, Canada|left]]
Glacial [[moraine]]s are formed by the deposition of material from a glacier and are exposed after the glacier has retreated. They usually appear as linear mounds of [[till]], a non-sorted mixture of rock, gravel, and boulders within a matrix of fine powdery material. Terminal or end moraines are formed at the foot or terminal end of a glacier. Lateral moraines are formed on the sides of the glacier. Medial moraines are formed when a glacier meets its tributary glacier and merge, and the lateral moraines of each coalesce to form a moraine in the middle of the combined glacier. Less apparent are [[drift (geology)|ground moraines]], also called ''glacial drift'', which often blankets the surface underneath the glacier downslope from the equilibrium line.<ref name="NeuendorfOthers2005a">Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, eds., 2005. ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. {{ISBN|0-922152-76-4}}</ref><ref name=dkp/> The term ''moraine'' is of French origin. It was coined by peasants to describe alluvial embankments and rims found near the margins of glaciers in the French [[Alps]]. In modern geology, the term is used more broadly and is applied to a series of formations, all of which are composed of till. Moraines can also create moraine-dammed lakes.