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What is melting water at base of the glacier that helps the ice move over land?
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∙ 12y ago
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What is a glacial tarn?
A tarn is a small, steep-banked mountain lake, formed when a glacier advancing down a slope scoops material out of the ground in a "cirque" at the base of the slope. (Essentially, it continues downward into the ground before moving horizontally again.) When the glacier melts, the depression can fill with water, and is refilled by melting snow unless it becomes filled by silt.
Abrasion and plucking involves what part of glacier?
The base of the glacier, where it is in contact with the rocks beneath it.
What are glaciers and how are they formed?
Glaciers are large blocks of ice found in areas of high latitude or high altitude. They erode in two ways: abrasion and plucking. Abrasion can only occur when the glacier is moving. Subglacial debris embedded in the base and sides of the glacier scrapes the valley base and walls as it moves through the valley. Plucking involves the glacier moving over a resistant outcrop of rock where pressure-melting creates meltwater. The meltwater then flows to an area of low pressure where is subsequently refreezes attaching itself to both the surrounding rock and the glacier itself. The glacier then advanced physically ripping the rock out of the valley.
What is the term used to describe the movement of a glacier around small obstacles at its base?
Slip and flow
When the base of a glacier melts and refreezing it will likely pick up some rocks this process is called what?
Wish
What is a basal flow?
melting water at base of a glacier
What are two kinds of glacier's?
A temperate glacier remains at melting point from surface to base throughout the year. A polar glacier always remains below freezing point.
What is the name for a glacier that has frozen to the bedrock?
Polar glaciers are glaciers that are frozen to the bedrock. The surface snow-pack of a polar glacier may experience melting, but the ice from the surface to the base is always below freezing.
What is a glacial tarn?
A tarn is a small, steep-banked mountain lake, formed when a glacier advancing down a slope scoops material out of the ground in a "cirque" at the base of the slope. (Essentially, it continues downward into the ground before moving horizontally again.) When the glacier melts, the depression can fill with water, and is refilled by melting snow unless it becomes filled by silt.
When A glacier will move by sliding when the base of the ice and the underlying rock are separated by a thin layer of?
I believe the answer is water.
What landforms does glacial erosion create?
Two major erosional processes occur at the base of a glacier. First, at the base of a glacier, large amounts of loose rock and sediment are incorporated into the moving glacial ice by partial melting and refreezing. The second process of erosion involves the abrasive action of the held rock and sediment held by the ice on the surface underneath the glacier. This abrasive process is known as scouring.
Abrasion and plucking involves what part of glacier?
The base of the glacier, where it is in contact with the rocks beneath it.
Where do you find water vivosaurs?
You can find them in Bottomsup Bay,BB Base,Rivet Ravine,Coldfeet Glacier,and Secret Island
How many miles is Onyx River in Antarctica?
This seasonal, melt-water river flows about 32 K from the base of the glacier to the sea.
What is an outflow glacier?
Glacial PlainA l outwash plain is a stratified deposit of sand and gravel transported by water from a melting glacial ice sheet.
How does ice transport eroded materials?
Ice transports material through glacial movement. As the glacier moves down a valley, it picks us sediment and rocks from the valley sides that get trapped in the glacier or fall on top. This is common as the most obvious place for rock to accumulate is the surface of the ice. Glaciers also pluck rocks from the base of the valley through water melting and seeping into cracks. This water freezes again and the pulling force of the glacier rips rock from valley floor. As the ice moves, the process that occurs is sometimes called the sandpaper effect as it grinds away the floor of the valley. This is called abrasion.
Where are moraines located?
Ground moraines are located at the base of the glacier.
