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An outwash plain, also called a sandur (plural: sandurs[1]), sandr[2] or sandar, [3] is a plain formed of glaciofluvial deposits due to meltwater outwash at the terminus of a glacier. As it flows, the glacier grinds the underlying rock surface and carries the debris along. The meltwater at the snout of the glacier deposits its load of sediment ...
When many outwash streams flow from the ice front into a lowland area they form a broad sandur, or outwash plain. [17] A sandar may hold deposits that are tens of meters thick. [19] In mountainous regions the outwash streams are confined by valley sides and deposit thick layers of sediment in linear outwash plains called valley trains. [17]
The lake colors indicate amounts of sediment or depth. A kettle (also known as a kettle hole, kettlehole, or pothole) is a depression or hole in an outwash plain formed by retreating glaciers or draining floodwaters. The kettles are formed as a result of blocks of dead ice left behind by retreating glaciers, which become surrounded by sediment ...
The glacial front is north of the junction of the Hood Canal to Admiralty Inlet and fills the Whidbey Basin. The outwash plains fill the entrance of the Hood Canal, Admiralty Inlet and Possession Sound from north of Everett to the southern end of Whidbey Island. The ice continued to move southward at an average rate of 450 feet (140 m) per year.
An outwash fan is a fan-shaped body of sediments deposited by braided streams from a melting glacier. Sediment locked within the ice of the glacier gets transported by the streams of meltwater, and deposits on the outwash plain, at the terminus of the glacier. The outwash, the sediment transported and deposited by the meltwater and that makes ...
The different streams are supraglacial, subglacial, englacial and proglacial. A glacier stream is a channelized area that is formed by a glacier in which liquid water accumulates and flows. [1] Glacial streams are also commonly referred to as "glacier stream" or/and "glacial meltwater stream". The movement of the water is influenced and ...
Kelling Heath lies on the Cromer Ridge, a glacial moraine formed by retreating glaciers at the end of the last Ice age. [4] Together with nearby Salthouse Heath, it is one of two distinct outwash plains dating from different halt stages of the same glaciation. Kelling Heath provides perhaps the best example of a glacial outwash plain in England.
At the surface, the entire region is "Moraine terrain", with the glacial landforms of moraines, drumlins, eskers, kames, outwash plains and till plains, all relics from recent glaciation. In the multitude of glacier-formed depressions are wetlands and many of the state's "10,000 lakes", which make the area prime vacation territory.