Depositional
A ridge of till (unsorted sediment) deposited at the farthest point a glacier reaches.
What is a terminal moraine?
A glacier grows when snow is added to this "zone."
What is the Accumulation Zone?
This is formed when ocean water freezes.
What is Sea Ice?
Evidence of an area where a smaller, less deep, glacier met with the larger, deeper, glacier.
What is a hanging valley?
In North America, including Lake Superior, Lake Huron, Lake Michigan, Lake Erie, and Lake Ontario, are the result of the melting of the Laurentide Ice Sheet during the last ice age.
What are the Great Lakes?
Elongated hills of till, shaped by the movement of a glacier.
What is a Drumlin?
What is an Alpine Glacier?
Disks of ice that form in rough seas and look yummy to eat!
What is pancake ice?
Lines of glacial movement left behind on the ground, formed from the scraping of debris carried by the glacier and showing the direction the glacier traveled.
What are striations?
When large blocks of ice become detached from a glacier and are buried by debris, they can melt, leaving behind depressions that fill with water.
What is a kettle lake?
A large stone left behind by a glacier, not the wind.
What is an erratic?
This word refers to how tightly packed the ice/ snow is in a given area.
What is density?
This ice can look like small needle like ice crystals, a coarse slush, discs, needles, or hexagons.
What is Frazil Ice?
Pointed peaks that are bounded on at least three sides by glaciers. They typically have flat faces that give them a pyramidal shape with distinct edges.
What is a horn?
A lake that is formed in a cirque.
What is a Tarn?
Mounds of sediment deposited by meltwater streams flowing from or within a glacier.
What are Kames?
50% air, 50% "ice"
What is Granular Ice?
Ice that drifts with winds and currents.
Bowl shaped amphitheater like depressions that glaciers carve into mountains and valley sidewalls at high elevations.
What are cirques?
These lakes are found beneath glaciers, often formed by geothermal activity or pressure from the overlying ice.
What is a subglacial lake?
Long, winding ridges of sediment deposited by meltwater streams flowing through tunnels within or under the glacier.
What are Eskers?
20%-30% Air, 80%-70% "Ice"
What is Firn?
Three things that sea ice does.
What is cools the planet, affects ocean currents, and provides habitat for ocean animals?
A rock or mountain that stands above the surrounding land of the ice sheet which is being glaciated.
What are nunataks?
A series of small lakes connected by a single stream, formed in a U-shaped valley.
What is a paternoster lake?