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Is striations a glacial feature caused by erosion?
Yes, striations are a glacial feature caused by the erosion of bedrock as a glacier moves over it. These scratches or grooves are formed by the rocks and debris embedded in the ice scraping against the underlying rock surface.
What caused the glacial grooves?
Glacial grooves were caused by the movement of rocks and debris embedded in the base of a glacier as it moved over bedrock. The pressure and abrasion from the rocks scraping against the bedrock created the grooves.
Is Glacial striations erosion or deposition?
Glacial striations are a result of erosion. They are scratches and grooves on bedrock caused by rocks and debris being dragged along by moving glaciers.
A geologist finds deep gouges and scratches on bedrock in an area once covered by a glacier These scratches are evidence of the type of erosion called?
These scratches are evidence of glacial erosion, specifically caused by the movement of rocks embedded in the ice as the glacier advances and retreats. This type of erosion, known as abrasion, leaves distinct marks on the bedrock in the form of gouges and scratches.
What are two types of glacial erosion?
Two types of glacial erosion are plucking, where rocks and sediments are plucked from the bedrock by the moving glacier, and abrasion, where the glacier's movement causes it to scrape and polish the underlying bedrock.
Is striations a glacial feature caused by erosion?
Yes, striations are a glacial feature caused by the erosion of bedrock as a glacier moves over it. These scratches or grooves are formed by the rocks and debris embedded in the ice scraping against the underlying rock surface.
U-shaped valleys and parallel grooves in bedrock are characteristics of erosion by?
glacial ice
What caused the glacial grooves?
Glacial grooves were caused by the movement of rocks and debris embedded in the base of a glacier as it moved over bedrock. The pressure and abrasion from the rocks scraping against the bedrock created the grooves.
What are bowl-shaped basins resulting from glacial erosion on the side of a mountain?
Cirques are bowl-shaped basins resulting from glacial erosion on the side of a mountain. They are formed by the scouring action of a glacier as it moves downhill and erodes the bedrock through processes like abrasion and plucking. Cirques are typically the starting point for glaciers and can later develop into larger glacier valleys.
Is Glacial striations erosion or deposition?
Glacial striations are a result of erosion. They are scratches and grooves on bedrock caused by rocks and debris being dragged along by moving glaciers.
A geologist finds deep gouges and scratches on bedrock in an area once covered by a glacier These scratches are evidence of the type of erosion called?
These scratches are evidence of glacial erosion, specifically caused by the movement of rocks embedded in the ice as the glacier advances and retreats. This type of erosion, known as abrasion, leaves distinct marks on the bedrock in the form of gouges and scratches.
What are two types of glacial erosion?
Two types of glacial erosion are plucking, where rocks and sediments are plucked from the bedrock by the moving glacier, and abrasion, where the glacier's movement causes it to scrape and polish the underlying bedrock.
How does the process of plucking cause erosion?
Plucking is a glacial erosion process where ice plucks rock fragments from the bedrock as the glacier moves. This occurs when the ice freezes around rock fragments and then plucks them off the bedrock. The process of plucking can deepen existing cracks in the bedrock, leading to further erosion as the glacier moves.
Which erosional feature most likely formed on the surface of the bedrock under the glacial ice?
Striations would most likely form on the surface of the bedrock under the glacial ice. Striations are caused by the movement of large rocks embedded in the base of a glacier scraping across the bedrock, resulting in long, parallel grooves being carved into the bedrock surface.
What are the three main types of glacial erosion?
The three main types of glacial erosion are plucking, abrasion, and quarrying. Plucking occurs when rocks are lifted and carried away by the moving glacier. Abrasion happens when rocks and sediment carried by the glacier scrape against the bedrock, wearing it down. Quarrying involves the glacier breaking off and carrying away large chunks of bedrock.
What is the landscape of the mountain region?
Plateau- it has a horizontal bedrock structure and is a continuation of the Allegheny plateau. It looks like mountains because of stream and glacial erosion.
What are three glacial features formed by erosion?
Cirques are bowl-shaped depressions formed by glacial erosion at the head of a glacier. Arêtes are narrow ridges that separate two adjacent glacial valleys. Roche moutonnées are glacier-smoothed bedrock outcrops with a gentle up-glacier slope and a steep down-glacier slope.
