what is a outwash plains
OUTWASH PLAINS. The large quantities of water that flowed from the melting ice deposited various kinds of materials, the most important of which is called glacial outwash. Outwash plains made up of outwash deposits are characteristically flat and consist of layers of sand and other fine sediments. till plain is composed of unsorted material (till) of all sizes with much clay, an outwash plain is mainly stratified (layered and sorted) gravel and sand. The till plain has a gently undulating to hilly surface; the outwash is flat or very gently undulating where it is a thin veneer on the underlying till.
An outwash plain, also called a sandur (plural: sandurs), sandr or sandar, is a plain formed of glacial sediments deposited by meltwater outwash at the terminus of a glacier.he 1996 joekulhlaup jÃ¶kulhlaup was caused by the eruption of The grimsvoetn, grÃ­msvÃ¶tn volcano with peak flow estimated 50,000 be 50000 /m (1,800,000 s 1800000/cu) ft s compared to the normal summer peak flow of 200 to 400 /m (7,100â14,100 7100 14100/cu). ft s