Plucking glacial erosion

Glacial Erosion Glaciers erode the underlying rock by abrasion and plucking. Glacial meltwater seeps into cracks of the underlying rock, the water freezes and pushes pieces of rock outward. The rock is then plucked out and carried away by the flowing ice of the moving glacier (Figure below) Plucking occurs when rocks and stones become frozen to the base or sides of the glacier and are plucked from the ground or rock face as the glacier moves. This leaves behind a jagged landscape... Plucking There are two main processes of glacial erosion. The first one is plucking, which is defined as the erosion and transport of large chunks of rocks. As the glacier moves over the land, water melts below the glacier and seeps into the cracks within the underlying bedrock Glacial Erosion. There are two main processes of glacial erosion. The first that we will talk about is plucking, which is defined as the erosion and transport of large chunks of rocks.As a glacier. Over billions of years, glacial plucking and abrasion can create deep valleys surrounded by jagged mountains and marked by moraines -- ridges of boulder rubble -- as well as series of lakes. The..

Plucking As the glacier moves, friction causes the bottom of the glacier to melt this water freezes into joints in the rock. When the glacier moves again the rock is pulled away or 'plucked' from the base of the valley 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 Glaciers erode land primarily in two ways: plucking and abrasions. Plucking. occurs when meltwater penetrates the cracks and joints along the rock floor of the glaciers and freezes, expanding and exerting tremendous leverage that pries the rock loose. Landforms Created by Glacial Erosion ***** Glacial trough: during glaciation, the narrow. The two main types of erosion are: Abrasion - as the glacier moves downhill, rocks that have been frozen into the base and sides of the glacier scrape the rock beneath. The rocks scrape the bedrock..

Glacial Erosion and Deposition Earth Scienc

Erosion processes in a glacie 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. How is a hanging valley formed Plucking is when parts and pieces of the earth (rocks and soil) are picked up by a moving glacier. As the glacier freezes the rocks and soil are frozen to the bottom of the glacier. As the glacier melts and moves the rocks are dragged along the earth digging up more earth and bits as they go Plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large joint blocks. As a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock

Abrasion and plucking - Glaciation - GCSE Geography

  1. Agents of erosion include rainfall; bedrock wear in rivers; coastal erosion by the sea and waves; glacial plucking, abrasion, and scour; areal flooding; wind abrasion; groundwater processes; and mass movement processes in steep landscapes like landslides and debris flows. The rates at which such processes act control how fast a surface is eroded
  2. Plucking is the process of glacial erosion where rocks and debris from the bedrock became embedded into the base and the sides of the glacier
  3. Check out products related to Geography, Travel and the Outdoors on Amazon:https://www.amazon.com/shop/darrongedgesgeographychannel (Paid Link)Glaciers erode..
  4. There are three types of glacial erosion: plucking, abrasion and freeze thawing. The most significant, recent glacial erosion occurred during the Pleistocene epoch, 100 thousand to 1.6 million years ago, in the Quaternary period. During that time, over about 2 to 3 million years, the polar icecaps repeatedly melted and froze. The types of.
  5. ant bedrock erosion processes: • asymmetry of erosional forms • asymmetry of cosmogenic ages: old ages on abraded surfaces (quarrying rates > 10 times abrasion rates
  6. Plucking and abrasion on the back wall of two cirques on a mou The erosional processes within nearby cirques mean they erode A V shaped river valley is widened and deepened as a result o

What is Glacial Erosion? Processes and Various Features of

  1. Other articles where Glacial quarrying is discussed: glacial landform: Glacial erosion: generally included under the terms glacial plucking or quarrying. This process involves the removal of larger pieces of rock from the glacier bed. Various explanations for this phenomenon have been proposed. Some of the mechanisms suggested are based on differential stresses in the rock caused by ice.
  2. Erosion by Glaciers. Like flowing water, flowing ice erodes the land. It also can deposit the material elsewhere. Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is caused when sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice
  3. Erosion by Glaciers. Features created by glacial erosion may be massive, like hanging valleys and horns, or smaller, like glacial striations. % Progress . MEMORY METER. This indicates how strong in your memory this concept is. Practice. Preview; Assign Practice; Preview. Progress % Practice Now
  4. Glaciologists recognize two processes of erosion--abrasion and plucking. The glacier ice itself cannot abrade rock. However, given a load of rock debris, the ice layer at the base of a glacier becomes as sandpaper. Much like a slow but steadily moving belt sander, the sliding base of the glacier can grind away at the valley floor on which the.
  5. Processes of glacial erosion. Plucking is when meltwater from a glacier freezes around lumps of cracked and broken rock. When the ice moves downhill, rock is plucked from the back wall. Plucking is particularly effective when the rock contains joints (cracks) the water can seep into. Meltwater is found under a glacier due to the weight of the ice
  6. Plucking This process occurs when the glacier freezes onto rock outcrops and then ice movement pulls away masses of rock. Plucking creates a jagged-featured landscape Rotational movement This is the downhill movement of ice pivoting around a central point of rotation.    Landforms created by glacial erosion:.
  7. 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

Describe them.The two main processes that lead to glacial erosion are plucking and abrasion. Plucking is the process by which a glacier picks off rocks as it blocks over the land. The rock. In the abrasion process, debris in the basal ice scrapes along the rock surface, polishing and gouging the underlying rocks, while in the process of plucking glaciers cause pieces of bedrock to crack off and be incorporated in the flowing ice. These processes usually combine erosion and transport by a water network beneath the glacier Glacial plucking occurs when a glacier moves down a slope and the motion of the ice pulls already-fractured rock away. Abrasion is caused by rock attached to a glacier as it moves; the friction between the moving rock and underlying bedrock causes erosion of the bedrock, and this is the way most valleys are created Glacier recession/retreat - The shrinking of the glacier. Processes of Ice Erosion Plucking - The meltwater of the glacier freezes onto rock on the valley base. As the glacier moves the rock is pulled away from the valley base, plucking is effective when the rock contains many cracks which the water c seep into

Definition: Plucking is a process of erosion that occurs during glaciation. As ice and glaciers move, they scrape along the surrounding rock and pull away pieces of rock which causes erosion PROCESSES OF GLACIAL EROSION: Glacial Abrasion (create striations / chatter marks / polished surface) Plucking Sub-glacial water erosion. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising

Glacial Erosion: Definition, Processes & Features

The term glacial erosion means the same thing as ice erosion. It occurs in one of three ways. plucking - As a glacier moves, it causes the bedrock over which it passes to fracture. Fragments end up getting frozen into the bottom and sides of the glacier itself, and so they move with it. This is also known as quarrying Over thousands of years glaciers may erode their substrate to a depth of several tens of metres by this mechanism, producing a variety of streamlined landforms typical of glaciated landscapes. Several other processes of glacial erosion are generally included under the terms glacial plucking or quarrying. This process involves the removal of. 38) All of the following represent forms of glacial erosion except. A) ablation. B) abrasion. C) plucking. D) rock pieces freezing to the basal layers of the glacier. Answer: A . 39 Which of the following are erosional landforms created only by alpine glaciation? A) drumlins. B) eskers. C) till plains. D) cols and horns. Answer:

What Is Plucking & Abrasion? Home Guides SF Gat

Here they share the glacial erosion lessons that grew out of the geologist's frustration at finding glacial erosion labs erroneously showing glaciers eroding by pushing rocks. Their goal was to find a way to show and explain glacial erosion more accurately and in a way that elementary age students could understand Subglacial erosion beneath glaciers occurs predominantly by abrasion and plucking, producing distinct erosional forms. The controls on the relative importance of abrasion vs. plucking are poorly understood. On the one hand, glacial conditions that favour or suppress cavity formation (ice velocity, ice thickness, and water pressure) are thought. Glacial erosion can physically change rocks in many ways, such as the following major ways: Ice can freeze in the cracks of rocks after rain, causing the ice to expand the cracks and lead to pieces of rock breaking off; Flow of glaciers plucking rocks up from the base of the flo

Glacial Erosion. As a glacier flows over the land, it picks up rocks in a process called plucking. Beneath a glacier, the weight of the ice can break rocks apart. These pieces of rock now freeze to the bottom of the glacier. As the glacier moves, it carries the rocks with it. This process can move even huge boulders Plucking. Abrasion. Rotational slip. Correct! Wrong! Identify the narrow, steep-sided ridge formed when two or more carries erode back to back. Pyramidal peak. Which of the following explain the reasons for increased erosion in glacial troughs resulting in the formation of ribbon lakes

You are asking about how quickly glaciers are receding then try saying that. Glaciers do not erode. They vanish. Location is the rate of the disapearance of the last of the remaining glaciers and that is so much old hat now. The Arctic Ocean itsel.. Glaciers are categorized by their morphology, thermal characteristics, and behavior. Alpine glaciers, also known as mountain glaciersor cirque glaciers, form on the crests and slopes of mountains.An alpine glacier that fills a valley is sometimes called a valley glacier.A large body of glacial ice astride a mountain, mountain range, or volcano is termed an ice cap or ice field An outwash plain is the glacial till that is deposited by the glacier's melted runoff. You will find outwash plains at the base of glaciers, usually accompanied by rivers and near ocean shores. The next video, Chasing Ice, explores a bit of climate change and shows a photographer that has gone out over the years taking thousands of pictures of glaciers, glacier calving, glacier receding

The principal control on which combination of flow processes operate beneath a given glacier - creep or basal sliding - is the temperature of the basal ice. Some glaciers are frozen to their beds and no meltwater is present at the ice-bed interface and basal sliding does not occur (Figure 3.9) Experiment 1: Glacial Erosion: Freeze-thaw, Plucking, and Abrasion As Agassiz theorized, flowing glaciers carry rocks that scrape across surface bedrock. Glaciers erode rock three ways. One is by freeze-thaw weathering when glacial meltwater enters cracks, freezes, and causes the rock to break up. When glaciers move, they may pluck piece Subglacial erosion beneath glaciers occurs predominantly by abrasion and plucking, producing distinct erosional forms. The controls on the relative importance of abrasion vs. plucking are poorly understood. On the one hand, glacial conditions that favour or suppress cavity formation (ice velocity, ice thickness, and water pressure) are thought to favour plucking or abrasion, respectively

Our results suggest that, while glacial erosion can generate a u-shaped valley profile over long periods of time (e.g., 10 5 -10 7 years), the discontinuous nature of glacial plucking produces spatially variable patterns of erosion over shorter millennial timescales Glacial Erosion: Processes . The wearing away of the landscape by glaciers is called Glacial erosion. In the UK, the results of glacial erosion during the last ice age can be seen in many of the upland areas such as north Wales, highland Scotland and the Lake District. There are three main processes that cause glacial erosion Plucking, New Zealand. This small stoss and lee form shows how the plucking process works. The block on the right is scheduled next for erosion. This is the On this Landsat image the alignment of lakes reflects glacial erosion cutting the local bedrock. Note the lakes on Mount Desert Island (cutting through granite) have a slightly. Glacial erosional processes include abrasion, plucking, and physical and chemical erosion by glacial meltwater. Slideshow 308052 by garnet How do glaciers form? A. Glacier Origins and Found in regions of the earth where erosion and deposition by wind are the dominant geomorphic forces shaping the face of the landscape Glacial trough - These are made by the movement of a glacier downhill eroding into the floors and walls of, usually, old river valleys. The glacier carves through the rock deepening and widening the valley by abrasion and plucking. When the ice melts a glacial trough is left behind, also known as a U-shaped valley

Landforms of glacial erosion Revision Worl

Plucking is a glacial phenomenon which erodes and transports bedrock. As a glacier moves down the valley, there is friction with the rock floor. This friction causes the basal ice of the glacier to melt and infiltrate joints in the bedrock where it then freezes. As the glacier moves on, the rock now bonded to the glacier, plucked from the bedrock onto the base of the glacier and carried with it Glaciers and Glaciation Practice exam questions written by Timothy H. Heaton, Professor of Earth Sciences, University of South Dakota. Click the circle by an answer with the mouse, then click on the Submit button to get a response. You will be told if your answer is correct or not and will be given some comments Depositional features are created by the release of rocky material from a glacier. They vary widely in scale and form. All sediment (rock debris ranging from clay to boulders) deposited as a result of glacial erosion is called glacial drift. Like a stream, a glacier picks up and carries sediment particles of various sizes

plucking glacial plucking glacial In addition to chemical weathering and the physical weathering of hydraulic action, freeze-thaw cycles (see frost weathering), and more, there is a suite of processes which have long been considered to contribute significantly to bedrock channel erosion include plucking, abrasion (due to both bedload and. HW #11 - Homework and Assessment Quiz What evidence of glacial erosion is visible in this image? A) Crevasses B) Striations C) Faults D) Outwash Which method of glacial erosion is responsible for the marks in this image? A) Abrasion B) Plucking C) Quarrying D) Jointing The landform visible in this image is a drumlin Principal features of glacial erosion Once the glacier has been melting, freezing, plucking, and grinding for thousands of years, it will have a dramatic effect on the landscape. It is these processes that create the spectacular features of glacial erosion seen in Patagonia , including cirques, arêtes, and U-shaped valleys

The plucking form of glacial erosion _____

  1. It remains an unproven hypothesis that current models of surface processes and geodynamics can explain the long-term evolution of mountain ranges. In this study, we use a forward based physical model of ice flow and erosion to show how the popular sliding velocity linked model of glacial erosion both succeeds and fails at explaining rock uplift observations in the Olympic Mountains of.
  2. Glacial Erosion There is/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. Abrasion is when rock frozen to the base and the back of the glacier scrapes the bed.
  3. (a) Describe plucking as a process in glacial erosion. (b) Explain three conditions that lead to glacial deposition. (c) The diagram below shows features resulting from glacial deposition on a lowland area. (i) Name the features marked X, Y and

The relative efficacy of fluvial and glacial erosion over modern to orogenic timescales Michele N. Koppes & David R. Montgomery Abstract Since the late nineteenth century, it has been debated whether rivers or glaciers are more effective agents of erosion. The dramatic landscapes associated with glaciated terrain have often led to the argument tha Glacial Erosion. plucking; abrasion; rock flour; glacial striations; Rate of glacial ersosion depends on: rate of glacial movement; thickness of the ice; shape, abundance, and hardness of the rock fragments; erodibility of the underlying surface; alpine vs. ice sheet - one sharpens, one blunts features Landforms Created by Glacial Erosion. Plucking. The mechanical removal of pieces of rock from a bedrock face that is in contact with glacier ice. Blocks are quarried and prepared for removal by the freezing and thawing of water in cracks, joints, and fractures. Formed by glacier erosion, a U-shaped valley results when a glacier widens and over-steepens a V-shaped stream valley. Plucking is evidenced in a variety of ways. There is G. K. Gilbert's (1910) argument that in southern Alaska where there is clearly evidence 'of an enormous amount of glacial degradation, it was a matter of surprise to find the reduction of the surface to smooth sweeping curves was a somewhat rare phenomenon

Glacier National Park: Erosion in Glacier National Park

Plucking is the process of particle detachment by moving glacial ice. In this process, basal ice freezes in rock surface cracks. As the main body of the glacial ice moves material around the ice in the cracks is pulled and plucked out. Glacial erosion also results in a change in the valley's cross-sectional shape There are three main types of glacial erosion: plucking, abrasion, and freeze-thaw. Plucking is when the melted water from the glacier begins to freeze around broken or cracked rock pieces. The rocks begin to get plucked from the back wall when the ice moves downward, taking huge chunks of soil with it Plucking: a type of erosion where melt water in the glacier freezes onto rocks, and as the ice moves forward it plucks or pulls out large pieces along the rock joints. Pyramidal Peak: where several cirques cut back to meet at a central point, the mountain takes the form of a steep pyramid, e.g. the Matterhorn in the Alps

When the glacier advances it can erode the loose rock by plucking. Climate also determines whether the glacier is warm based or cold based. Warm based glaciers move quickly due to water underneath the ice (basal sliding), and therefore the rate of erosion is higher This at the front of the glacier acts like a bulldozer, shifting and removing soil and plucking rock from interlocking spurs and truncating them. As a river erodes the upper valley cuts down into the rock and meanders in and out of the surrounding rock. Striations are a result of glacial erosion. When the glacial trough erodes down to sea.

6.3 Glacial Erosion Flashcards Quizle

The physical erosion: Glacial Erosion: Two glacial erosion processes does exist : abrasion and plucking: - Abrasion is the result of the friction of the ice and the materials it contains against the bedrock. On the ground, this process can be in the form of glacial striae (striae), and as sheep rock (polishing). glacial striae sheepbac There are already 2 good answers here that talk about the massive physical power of glaciers in relation to their abrasive weathering power (the removal of parent material or bedrock) from any valley walls or subglacial surface. Two other forms of.. LITHOSPHERE GLACIATION 6 Processes Of Erosion Plucking The water from this process often comes from the friction between ice moving over rock. Another source of the water is a result of melting of the ice; during the day it melts, but refreezes at night. Plucked Rock


The correspondence between the high peaks and large glaciers and an inferred 8-fold acceleration in exhumation rate at ~ 2 Ma (Arnaud et al., 1993), has led to the suggestion that enhanced exhumation is a response to glacial erosion in the Quaternary Abrasion is the process by which glaciers erode and smooth their bed by indentation fracture and plowing of clasts and polishing by shearing of fine sediment across bedrock. Quarrying of bedrock through fracturing and plucking is the dominant erosional process in the subglacial environment and provides material for the abrasion process the two with plucking providing basal material that is required for abrasion. Plucking is particularly important because its efficacy may help to account for the large size of glacial troughs with depths and widths ofseveral kilometres. Plucking alsoaccountsfor the angular clasts that are sowidespread in glacial deposits left by mid-latitude. Observations and theories are presented and reviewed about the processes of glacier erosion of rock and unlithified sediment beds both when they are frozen and unfrozen. Erosional bedrock landforms, such as roches moutonnées, indicate two principal subglacial erosional processes, plucking and abrasion. Where supraglacially derived debris is. A process of glacial erosion which involves the penetration of ice or rock wedges into subglacial niches, crevices, and joints in the bedrock; as the glacier moves, it plucks off pieces of jointed rock and incorporates them. Also known as glacial plucking; quarrying

2. How does the process of plucking cause erosion D. Rocks are mixed with sediment and dropped at the edges of the glacier. 3. Which of the following causes glaciers to flow downhill? C. Gravity pulls on the ice and makes the mass thinner 4. _____ is a small depression that forms when a chunk of ice is left in glacial till and later melt GLACIAL EROSION. Explaining Glaciers, Accurately (Grades 3-5) This article from the National Science Teachers Association journal Science and Children describes two activities that help students develop correct understanding of how glaciers change the earth's surface by plucking and abrasion. Free for NSTA members and nonmembers

Erosion lowers elevations by removing soil and rock and transporting it elsewhere. A common form of erosion by glaciers is plucking; this is when ice flows over bedrock and the meltwater penetrates into cracks, freezes and expands, and eventually enlarges the crack(s) until the rock is detached and incorporated into the ice Glacial erosion erode in three different forms - Plucking - also known as quarrying, plucking exploits pre-existing fractures in the bedrock. This is then followed by the entrainment of the loosened rock by the ice. Ice thrusting - the glacier freezes to its bed, then as it surges forward, it moves large sediments at the base along. Glacial Erosion - Valleys. Rivers tend to cut downwards into the land creating v-shapedvalleys (Figure 5A). However, when glaciers advance down those river valleys, through glacial plucking and abrasion the river valleys are straightened, widened, and deepened. When the glaciers melt the valleys take on more of a U-shape as you can see in.

Glacial processes - shaping the land - Glacial processes

When it comes to glacial erosion Norden mentions two primary processes, glacial abrasion and plucking. Glacial abrasion meaning the grinding away of the rock as it travels (Norden, 2011), and plucking where pieces are plucked away and taken away glacial erosion. As a glacier flows over the land, it picks up rocks in a process called plucking. Beneath a glacier, the weight of the ice can break rocks apart. These rock fragments freeze to the bottom of the glacier. When a glacier moves, it can carry rocks with it. Plucking can even move huge boulders


Glacial Erosion - SlideShar

Abrasion can crush smaller grains or particles and remove grains or multigrain fragments, but the removal of larger fragments is classified as plucking (or quarrying), the other major erosion source from glaciers. Plucking creates the debris at the base or sides of the glacier that causes abrasion Glacial erosion tends to occur in upland regions and is carried out by two main processes: Plucking - Imagine plucking your eyebrows. Well in glacier terms it means the action when the glacier creeps and freezes into and onto rock outcrops. As the ice advances it pulls away the rock with it and this normally happens at the base of the glacier

Plucking (glaciation) Project Gutenberg Self-Publishing

• Alpine or valley glaciers flow downhill through mountains along existing valleys. FIGURE 1.1 A satellite image of glaciers in the Hi-malaya with some features labeled. Glacial Erosion Glaciers erode the underlying rock by abrasion and plucking. Glacial meltwater seeps into cracks of the underlyin GLACIERS. Glaciers are large masses of ice that develop as snow is successively compacted over time.Although there are several different types of glaciers, with complex interactions governing their movement, the erosion that results from the movement glaciers can be characterized as plucking, abrasion, and ice thrusting.. Most rock surfaces are not flat or regular, and they often include.

Geology lecture 20VUDEEVUDEE'S GEOGRAPHY BLOG: GLACIATION: Glacial erosion

Glacial Erosion - Internet Geograph

of glacial erosion. Plucking is recognized more and more. The relative incompetency of glacial abrasion is mentioned here because it leads up to the consideration of the inadequacy of stream-abrasion. The same class of facts is appealed to for evidence in both cases, an There are 2 main processes of glacial erosion which occur because of the ice moving. A glacier is largely made up of ice but also has huge quantities of stones and boulders within it. These stones are likely to have come from freeze-thaw weathering or plucking. First, ice has the property of being able to freeze to rock

L2 ice erosion 2013 ap

Glacial plucking (quarrying) SpringerLin

The hanging of tributary valley is the result of alpine glacial erosion for 10 4 to 10 5 years. A numeral model of glacial erosion driven by the past 400 k.y. of variable climate is used to explore the development the development of longitudinal profiles of glacier valleys A glacier is a large mass of ice that moves slowly over land. There are two types of glaciers, continental glaciers and valley glaciers. Glaciers are a major force of erosion. They erode the land in two processes which are plucking and abrasion. Plucking is when a glacier flows over the land it pick up rocks. Plucking can move huge boulders Fourth grade lessons on glacial erosion demonstrate and explain the manner in which glaciers erode the earth. The mechanisms of plucking and abrasion are discussed. Activities (either whole-class or small group) include a teacher creation of a glacier model (using dirt and rocks to simulate a mountain, ice cubes and a small amount of water for. Glacial Erosion and Deposition DRAFT. 8th grade. 96 times. Science. 63% average accuracy. 8 months ago. hailiy27. 0. Save. Edit. Edit. Glacial Erosion and Deposition DRAFT. Plucking is rock and other pieces of rock being carved away by a glacier and then carried away by pieces of flowing ice. answer choices . true. false

Glacier clipart glacial erosion, Glacier glacial erosionFormation and Movement of Glaciers | Physical GeographyGeography: Space, Place and Pretty Wellies: Glacial ErosionGeology Test #2 at Covenant College - StudyBlue

When two or glaciers meet and merge at the base of mountains, the new glacier is called a piedmont glacier. If the piedmont glacier flows to the sea, it's called a tidewater glacier. 1) cirque glacier - glacier confined by a valley; forms in a cirque (semicircular basin at head of valley formed by plucking of bedrock by glacier moving down hill) These two types of erosion by glaciers are plucking and abrasion. A glacier can sometimes pick up rocks while moving across the land in a process that people call plucking. This is because the weight of the glacier on land is able to break up rocks. Then, these rocks freeze to the bottom of the glacier, sticking to it Glacial erosion: 2 main methods. Glacial abrasion - easiest to understand. Like sandpaper - rock is ground down. By rocks of all sizes frozen into the base and sides of the ice. Striations and glacial polishing common (Monroe; fig. 17-11, pg. 543) Glacial quarrying (or plucking) Chunks of rock pried out of sides and botto depressions produced by glacial plucking) in th e valley floor. d) Sediment yields and glacial erosion rates are evaluated for four Norwegian glaciers during the years 1989-93. Annual erosion. im revising my geography work, about glaciers etc. and i have got to the part about erosion. in my work it says the two main ways glaciers casue erosion are by abrasion and plucking. i read through my notes about both of these but i don't get it, im really confused!!! :S if anyone knows about abrasion and plucking erosion, would you please explain it to me!!!!! = Likewise, the hiking trails in the Park have nice examples of glacial plucking and glacial boulders. Loose sediments at one time covered Connecticut's coastline, including Rocky Neck State Park. This layer of loose sediments protected the seaward flank of New England's bedrock from erosion

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