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A process called plucking the rocks dragged by glaciers produce grooves and scratches in the bedrock?
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What is the process for the rocks dragged by glaciers produce grooves and scratches in bedrock?
striations
What is the gouging of bedrock by rock fragments dragged by glaciers results?
The gouging of bedrock by rock fragments dragged by glaciers results in the formation of grooves, scratches, and striations on the surface of the bedrock. These features, known as glacial striations, provide evidence of the direction and movement of past glaciers. These marks can also help geologists determine the extent and timing of glacial activity in an area.
What can occur as glaciers remove loose pieces of rock or as dragged rock scratches rock underneath the glacier?
something.
What makes glaciers act like giant sandpaper?
The rocks and pebbles embedded in the ice. When these rocks and pebbles are on the bottom surface of the glacier they are dragged over the surface of the ground, cutting into it (whether it is soil or hard bedrock) cutting grooves in and polishing that surface. Much like the grit glued to sandpaper does to a surface it is rubbed against.
Why do glaciers affect the land?
by moving along the groundansw21. At their head catchment area, the glacier will collect the annual snow fall, and commence to move it downwards. This process opens up cracks (bergschrunds) between the snow and the rock, for the rock will be warmer than the snow. (heat from the interior) Into these crevices, sometimes many feet wide, rocks will fall from the mountain above, and water will flow off the day-warmed rocks.2. In the main long body of the glacier there will be occasional steps in the valley bedrock, and there will be steps where a minor glacier branch joins a larger glacier. At these step points, a crevassed ice-fall will form, and again any moraine debris from the surface will become entrained in the ice.These entrained rocks and debris will be ground along the bedrock by the motion of the glacier, and produce a very fine rock flour in the process.Thus at the base of the glacier, we have water from melt, boulders and debris, and rock flour. These will be all ground along by the glacier above. Small and medium boulders will be ground to a rounded form, larger boulders will have their sharper corners ground off, but at any time, much of their body will be embedded in the glacial ice, and they will rotate only slowly. As these are dragged across the bedrock, they will produce the striae - the glacial scratches and gouges in the bedrock.3. Upvalley from the snout of the glacier, is the ablation (wastage) zone, where some of the ice mass will sublimate directly to water vapour, and much will melt. Near the snout, the glacier may be completely covered by rock moraine, and kettle holes will form due to uneven melting. Immediately downvalley of the glacier, a melt lake may form, and this feature is very destructive of the remaining ice. When masses of ice fall into the melt lake, minor tsunami (but ten metres or so high) may be created and these are dangerous to humans.A glacier can move rock from the mountains to the plains hundreds of times faster than simple riverine processes will do.Unlike a river, glacial ice can extend far below the surface level, and (where I live) glacial lakes 300m above sea level have their depth up to 100m below sea level.A fiord glacier may have its bed several hundreds of metres below sea level, the ice breaking off where the fiord enters the sea, and the ice becomes buoyant; and depositing a mound of moraine at the mouth of the fiord.
What is the process for the rocks dragged by glaciers produce grooves and scratches in bedrock?
striations
What is the process that the rocks dragged by glaciers produce grooves and scratches in bedrock is this the definition?
By the passing by of a glacier.
What is the gouging of bedrock by rock fragments dragged by glaciers results?
The gouging of bedrock by rock fragments dragged by glaciers results in the formation of grooves, scratches, and striations on the surface of the bedrock. These features, known as glacial striations, provide evidence of the direction and movement of past glaciers. These marks can also help geologists determine the extent and timing of glacial activity in an area.
The gouging of bedrock by rock fragments dragged by glaciers results in?
These are known as striations. Please see the related link.
What can occur as glaciers remove loose pieces of rock or as dragged rock scratches rock underneath the glacier?
something.
What are glacial striations and glacial erratics?
Striations are "scratches" left in bedrock by glaciers. A small particle of rock, generally pebble sized or smaller, becomes entrained in the base of the glacier and dragged along the surface of the bedrock. These can often be seen on hard bedrock surfaces that are resistant to subsequent weathering after the retreat of the glacier. Erratics are large rocks that are found out of place in the landscape, i.e. not near where they were formed. They are removed from their provenance by a glacier and transported away, before being deposited in a different part or the landscape when the glacier melts.
What errosive effects do glaciers have on rocks?
Glaciers drag immense amount of rock debris along their bottoms. This debris will scar the underlying bedrock, and in mountains, will form U-shaped valleys, as opposed to the more typical V-shape formed from water flow. Rocks dragged and tumbled by glaciers, often show signs of scarring and may also be rounded or smoothed by constant friction with other rocks.
What animal made scratches in rock that was found in South Africa?
Scratches in rocks are typically glacial striations. These are scratch marks made by pebbles trapped in a moving ice sheet that are dragged across a base layer of rock. South Africa has been covered by ice sheets in historical times and striated rock is found in many places.
What makes glaciers act like giant sandpaper?
The rocks and pebbles embedded in the ice. When these rocks and pebbles are on the bottom surface of the glacier they are dragged over the surface of the ground, cutting into it (whether it is soil or hard bedrock) cutting grooves in and polishing that surface. Much like the grit glued to sandpaper does to a surface it is rubbed against.
Why are the North Shore Beaches of Long Island so rocky?
What I have been told my whole life is, when the glaciers melted many, many, many moons ago all rocks were dragged to the north shore as they were stuck to the glacier.
What verb is correct dragged or drug?
Dragged.
What is a sentence using word dragged?
They dragged the rug out of the house.
