What are 3 main types of glacial erosion?

What are 3 main types of glacial erosion?

Processes of Glacial Erosion Glacial erosion involves the removal and transport of bedrock or sediment by three main processes: quarrying (also known as plucking), abrasion, and melt water erosion.

What does the erosional work of glacier forms?

Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, arêtes, and horns. Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.

What are the 5 different depositional features that can be created by a glacier?

U-shaped valleys, hanging valleys, cirques, horns, and aretes are features sculpted by ice. Grinnell Glacier in Glacier National Park has been retreating over the past 70 years. The eroded material is later deposited as large glacial erratics, in moraines, stratified drift, outwash plains, and drumlins.

What are glaciers describe an erosional and depositional features caused by glaciers?

What are the two main erosional effects of glaciers?

Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice. Abrasion is the process in which a glacier scrapes underlying rock.

What features are formed by glaciers?

Glacier Landforms

• U-Shaped Valleys, Fjords, and Hanging Valleys. Glaciers carve a set of distinctive, steep-walled, flat-bottomed valleys.
• Cirques.
• Nunataks, Arêtes, and Horns.
• Lateral and Medial Moraines.
• Terminal and Recessional Moraines.
• Glacial Till and Glacial Flour.
• Glacial Erratics.
• Glacial Striations.

Which features are formed by river erosion?

Through erosion, a river creates valleys, waterfalls, flood plains, meanders and oxbow lakes.

What are the four depositional features?

Depositional landforms are the visible evidence of processes that have deposited sediments or rocks after they were transported by flowing ice or water, wind or gravity. Examples include beaches, deltas, glacial moraines, sand dunes and salt domes.

What are 3 types of deposition?

Types of depositional environments

• Alluvial – type of Fluvial deposit.
• Aeolian – Processes due to wind activity.
• Fluvial – processes due to moving water, mainly streams.
• Lacustrine – processes due to moving water, mainly lakes.

Which of the following are formed due to erosion?

Landforms like wave-cut platforms, sea caves, sea arches, sea cliffs, etc. are formed because of the erosional work of the waves.

What is depositional feature of glacier called?

Moraines are ridge-like depositional features of glacial tills. Moraines consist of rock materials of heterogeneous shapes and size.

Are features caused by erosion by alpine glaciers?

Alpine Glacial Erosion Features. Alpine glaciers produce very different topography than continental glaciers. Alpine glaciers produce wide valleys with relatively flat bottoms and steep sides due to the erosion that occurs at the base and edges of the glaciers. These are known as U-shaped valleys (Figure 17.17).

What landforms are created by glacial erosion?

Glacial landforms are created by glacial forces, including movement, cryogenics, abrasion, erosion and deposition. Landforms such as crevasses, dirt cones, moulins and glacial caves occur within the glaciers themselves.

What are the types of glacial erosion?

There are three main types of glacial erosion – plucking, abrasion and freeze thaw. Plucking is when melt water from a glacier freezes around lumps of cracked and broken rock. When the ice moves downhill, rock is plucked from the back wall.

What are two features of glaciers?

Glaciers are made up of dense ice, and are formed when snow and ice compact. Glaciers are constantly moving due to their own weight, and this movement over land creates landforms over many centuries, moving very slowly. The two main types of glaciers are alpine glaciers and continental glaciers.

What are the features of a glacier?

Glacier Features: Glacier terminus. The terminus is the end of a glacier, usually the lowest end, and is also often called a glacier toe or snout. Two people rest near the tidewater terminus of Lamplugh Glacier, Alaska. —Credit: Photograph by William Osgood Field.