Glacial meltwater and landforms

Cards (11)

What is supraglacial channel flow?
Water that flows atop a glacier
What is englacial channel flow?
Water that flows within a glacier
What is sub glacial channel flow?
Water that flows below a glacier
What are eskers?
Long, winding ridges of sand and gravel, with meandering hills running parrallel to the valley sides, suggesting that they were formed by sub-glacial river deposition as the glacier retreated
What are kames?
Landforms on the ice surface consisting moslty of sand and gravel deposited by streams
What is a kame terrace?
A kame resulting from the filling of a marginal glacial lake, so that when the ice melts, it is left as a ridge on the valley side
What is a kame delta?
A kame with smaller features that form when a stream deposits material on the valley floor
What is a crevasse kame?
A kame with small pockets deposited on the valley floor as a result of sediment deposited in surface crevasses
What is an outwash plain/sandur?
An extensive, gently sloping area of sand and gravel that forms at the front of a glacier as a result of outwash of material carried by meltwater streams and rivers
What is a pro glacial lake?
A lake created when ice sheets expand and dam rivers
What are kettle holes?
Large blocks of ice covered by deposits from meltwater streams so that when the ice melts, a depression is left behind which then fills with water to form a kettle hole