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melt and produces subglacial meltwater streams. These streams under immense pressure and at high velocities along with the overlying weight of the glacier itself are able to carve into landscapes and pluck sediment from the ground. This sediment is transported as the glacier advances. In warmer seasons, the glacier diminishes and retreats. This process leaves behind dropped sediment in the form of depositional landforms. The two processes of advancement and retreat have the power to transform a landscape and leave behind a series of landforms that give great insight into past glacial presence and behavior. Landforms that result from these processes include
635:. The valley wall prevents meltwater streams from flowing outward away from the glacial snout. Instead, glacial meltwater is diverted laterally along the ice margin and deposits sediments between the glacier and valley wall. As the glacier retreats, the process may repeat creating a stepped slope or terrace referred to as a kame terrace. In a singular form, this landform may also be referred to as a kame moraine. Exact kame terrace morphology is dependent on the flow of the formative meltwater stream, and the angle between the ice margin and valley wall. Kame terraces are useful tool to indicate past ice margins.
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most often is oval in nature with a long axis parallel to the direction of ice flow. The steeper slope is typically up-ice whereas the shallower slow is down-ice. It is proposed that the width to length ratio of a drumlin can be used to determine the velocity at which a glacier was traveling. An elongated drumlin indicates a slower glacial velocity, whereas a shortened drumlin indicates a much faster glacial velocity. This is surmised due to the relationship between friction and surface area.
827:
contained in this ice is deposited as a till plain when the ice melts. The till is further dispersed and molded by the resulting meltwater. The composition of a till plain varies greatly and is dependent upon the path the glacier took and the bedrock underlying the glaciated region. Till plains are composed of poorly sorted sediment ranging in size from sand to large boulders. Landforms contained in a till plain include drumlins and moraines which are composed of glacial till.
492:. Moraines are commonly found near the extremities of a glacier, the bounds between two glacial bodies, or underneath a glacial body. Moraines may be used to mark the extent of a glaciated region and the successive patterns of advance and retreat during glaciation. The name and specific characteristics of a moraine are dependent upon its location relative to the glacial body and the processes that deposited the relevant glacial till. Four overarching types of moraines include
363:
614:. Terminal moraine refers to the moraine occurring at the point of the furthest advance of a glacier. A recessional moraine is a ridge of deposited debris that occurs when the glacier is stationary for an extended length of time. This occurs when a glacier meaning the glacier is in equilibrium or has halted during retreat . The occurrence of end moraines can be useful for determining a pattern of advance, retreat, and equilibrium of a glacier.
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659:, even after that water has ceased to be present in a landscape. Sediment heavy meltwater streams running out of or off of a glacial body will slow in velocity once in contact with a body of water. This decrease in velocity causes the streams to be unable to carry sediment and the sediment falls out of the water column. Heavier sediments will fall out of the water column first as the water velocity decreases. As such,
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719:, and are composed of the sediment deposits from the streams that occupy these tunnels. Eskers may also form from supra-glacial streams that cut into the crevasses of the glacier. After the ice has melted away the stream deposits are left remaining as long mounded eskers. A system of subglacial streams may create a branched formation of eskers, although these are not often continuous branches.
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landforms that distinguishes them from drumlins. Sediment grains located in a kame can range from fine to course-grained and cobble size to boulder-sized Others describe the size range as from sands to gravels. Kames are frequently associated with kettles in regions referred to as “kame and kettle topography”. These hills can range in size and be up to 50 m tall and 400 m wide.
417:
includes gravel and sand, and the grains are rounder due to sorting and abrasion. Yet further away, as non-glacial streams join the outwash streams the flow forms shallow braided channels or meandering streams and deposits sand. Glaciofluvial streams dominated by annual ice melting events may merge into a normal fluvial environment where non-glacial inflows are more important.
578:. Sediment clasts suspended in the ice at the bottom of the glacier have greater friction with the ground than the ice does. This causes the sediment to be slowed down disproportionately to the ice and eventually fall out or get stuck in the ground beneath the ice. The till may also be deposited as the glacier melts and retreats. Ground moraines are sometimes referred to as
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in the previously mentioned theory. The distinction being where the glacial till is derived from before being shaped. In all circumstances, because the subglacial region is not visible until after the glacier has retreated and because there is great variability in drumlin presentation, there remains some uncertainty as to the processes that shape these landforms.
292:, or from a water body within the glacier. Others are formed at the margin of the ice as small deltas. Kame terraces are benches of sand and gravel that were deposited by braided rivers flowing between the side of the valley and the glacier's ice margin. Kame terraces on opposite sides of a valley glacier may be at different elevations.
401:. A sandar may hold deposits that are tens of meters thick. In mountainous regions the outwash streams are confined by valley sides and deposit thick layers of sediment in linear outwash plains called valley trains. Terraces are formed when the streams grade down to lower levels and abandon higher and older outwash plains.
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moves rather slowly, steeped walled eskers may form. The debris found in eskers is dependent on the sediment in the ice and the supply to the meltwater stream within the tunnel. This sediment is usually sand to cobble-sized, with the occasional larger boulder. Bedding, although irregular at times, is expected in eskers.
855:). The color and amount of the sediment deposited also varies depending upon the season; summer deposits typically have larger volumes of deposition and are characterized as being light, whereas winter deposits are usually the opposite. Winter deposits are fairly uncommon because the water is frozen into ice again.
697:. As sediment-heavy glacial meltwater flows past the stationary ice block, the increased friction between the ice and sediment causes sediment build-up around the block of ice. The sediment may become so extensive as to completely bury the ice piece. The ice then melts and leaves behind an impression in the ground.
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of the sediment grains with the overall orientation of the drumlin. The second theory is that the erosion caused by the heavy overlying glacier scrapes material from an unconsolidated sediment bed and repositions it and deposits it at the drumlin. The drumlin is similarly shaped by the flow of ice as
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Often eskers follow the flow direction of the glacier, but in high-pressure cases meltwater is pushed to the lowest available spot which can form a very shallow and wide subglacial stream, resulting in short and wide eskers. Under less pressure, often near the terminal end of a glacier, where the ice
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The size of the deposited sediments which form a moraine can range from clay to boulder sized. Moraines can be reworked by further glacial action or meltwater into other fluvioglacial landforms. Both original and reworked moraines record a continuum of processes occurring on the landscape as a result
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The large daily fluctuations in discharge affect sediment motion. The sediment is picked up and carried as the discharge rises, then deposited as discharge falls. Usually much of the sediment rolls or slides near the bed of the stream. During the highest discharge periods large boulders may be set in
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A drumlin is an elongated hill shaped like a half-buried egg, where the shallower end of the hill also narrows in width. A collection of drumlins in one area is referred to as a field or swarm and creates a landscape sometimes called a “basket of eggs topography”. The shape of a drumlin may vary but
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Medial moraines are often thought to be the result of two glaciers converging. The sediment located between both glaciers is pushed on top of the larger conjoined glacier as the two bodies come together. Medial moraines may also form as subglacial and englacial material is carried upward by ice flow
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with channels separated by bars of gravel or sand. The channel of the braided streams are very unstable due to high loads of sediment, fluctuations in discharge and lack of plants to anchor the banks. The amount of material deposited is generally greatest near the end of the glacier, so the sediment
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with moderately rounded grain. The sediment nearer the glacier typically is coarser than non-glacial sediment, ranging from boulders down to sand, but with little silt and clay since the water usually flows too fast to allow these fine particle to settle until it is a considerable distance from the
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are deposits of sediment that fan out from the meltwater portal, with progressively finer sediment at greater distances from the portal. Fans may be deposited on land or in water. A line of adjacent outwash fans from an ice sheet may form a ridge, or glaciofluvial moraine. When many outwash streams
96:
Meltwater streams and formed by glaciers, especially in warmer seasons. Supra-glacial streams, those above the glacial surface, and subglacial streams, those beneath the glacial surface. At the interface of the glacier and the underlying land surface, the immense weight of the glacier causes ice to
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A kame is an irregularly shaped hill or mound formed by sediment deposition of a retreating glacier. The sediments are held in a depression in the glacier and are subsequently deposited as the glacier melts. Glacial meltwater causes further erosion and the characteristically unusual shape of these
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are similar to those created by other types of stream. Near the glacier the outwash plain is composed of long bars of coarse gravel with very variable grain size, with a few large channels between the bars. Further away there are transverse bars and a web of many braided channels. The sediment now
346:. They may also dissolve and remove soluble chemicals from the abraded bedrock and debris below the glacier. The streams pick up debris from below the glacier, and debris washed in from higher land beside the glacier. Usually they hold as much debris as they can carry when they leave the glacier.
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The remaining hole is referred to as a kettle. The exact size and characteristics of the kettle whole are a result of the degree of ice burial. Often these holes become filled with water by meltwater streams and are referred to as kettle lakes. Kettle lakes are often shallow due to the amount of
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Till plains are regions of flat to gently sloping topography, composed of till deposited by a melting glacier. Till plains may also be referred to as a region of ground moraines. Different from outwash plains, till plains form when a section of ice breaks off from the main glacier. The sediment
330:
Glaciolfluvial deposits are formed by outwash streams which flow through tunnels within or beneath a glacier. The water mainly comes from melting, and may also come from rainfall or from run-off from ice-free slopes beside the glacier. The streams have highly variable rates of flow depending on
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An outwash plain is a relatively flat region at the terminus of a glacier where glacial sediments are deposited by meltwater outwash. The sediment is distally sorted, the larger sediment being deposited closer to the margin of the glacier and finer-grained sediment carried further along by the
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Drumlins form as overlying ice moves across unconsolidated till or ground moraines. There are two main theories for the formation of drumlins. Although the exact origins of these landforms may vary circumstantially and is a topic of debate. The first, often called constructional, suggests that
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Eskers are long, curving ridges of stratified sediments found in previously glaciated regions. They may be several meters to hundreds of kilometers in length, and 3 m to 200 m tall. The height and width of an esker are determined by the water and ice pressure and sediment load at the time of
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Terminal moraines indicate the furthest advance of a glacier. As the glacier advances, sediment is transported to the bottom of the glacier and deposited. When the glacier melts, this unconsolidated debris forms ridges. The shape of a terminal represents the shape of the glacier snout or
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or unstratified till ranging in size from sand to boulders. The non-uniformity of drumlin composition is representative of the diverse origin of the sediments. Banding or layering of till may occur in drumlins as till accumulates on the drumlin formation in successive layers.
1950:
Cainozoic geology and landscape evolution of north-east
Scotland. Memoir for the drift editions of 1:50 000 geological sheets 66E Banchory, 67 Stonehaven, 76E Inverurie, 77 Aberdeen, 86E Turriff, 87W Ellon, 87E Peterhead, 95 Elgin, 96W Portsoy, 96E Banff and 97 Fraserburgh
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glacial till is deposited by meltwater streams and accumulated by the continual push of an overlying glacier. By this process the individual till particles in the drumlin align themselves in the direction of ice flow. Scientists can test this theory by studying the
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in cavities aligned with the flow, ribbed terrain in cavities that cross the flow and hummocky terrain elsewhere. Low, straight ridges as much as 10 metres (33 ft) high may be formed where sediment fills in crevasses within the glacier or at its base.
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is an impoundment of water prevented from flowing by a glacier, glacial till dam or behind a glacial feature such as an end moraine. Proglacial lakes are usually the byproduct of glacial meltwater. The sediment contained in a proglacial lake is a useful
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Deposits from the subsiding waters of an outburst flood may be poorly sorted, with a wide range of grain sizes, and without distinct bedforms. Other glaciofluvial sediments resemble sediments from non-glacial fluvial processes. They mainly consist of
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A kame terrace is a relatively flat surface of sediments that was deposited between the valley surface and the glacier. When a kame surfaces and other fluvio-glacial landforms are combined into one landscape, it is called a kame complex or glacial
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is a short mound or ridge with steep sides of sands and gravels deposited from melted ice. Kames may be isolated or formed in groups. Some are formed at the base of a glacier by meltwater flowing down from the surface of the ice in a
846:
Varves are a depositional feature of a fluvio-glacial movement. They are layers of annular sediment deposits. The sizes of the sediments vary and depend on the volume of the streams, but are usually associated with mud deposits
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and collects at the surface and inside the glacial body. This till is then carried along in the direction of glacial advance. As the glacier melts, the sediment is deposited as a ridge in the middle of the glacial valley.
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Lukas, S., Graf, A., Coray, S. & SchlĂĽchter, C. Genesis, stability and preservation potential of large lateral moraines of Alpine valley glaciers - towards a unifying theory based on
Findelengletscher, Switzerland.
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motion. There may also be high concentrations of suspended sediment in early summer, when discharge is highest. Lakes or reservoirs below, within, on or beside the glacier may release massive outburst floods known as
464:, alternating coarser sediments in the summer periods of high melt discharge and finer sediment in the winter. When the stream terminates in the ocean it leaves glaciomarine sediments. Outwash streams may form
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temperature, which in turn depends on the season, time of day and cloud cover. At times of high flow, the streams are under pressure. Streams below the glacier may flow upslope, driven by pressure.
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till) at the margin of the glacier and as such do not experience the same amount of glacial erosion as other incorporated sediments. Sediments that form the lateral moraines can be the result of
480:, or kettle lakes if they fill with water. Kettles are often associated with ice contact deposits. They may also form within sheet deposits, but are usually smaller than the ice contact kettles.
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Glaciofluvial deposits may surround and cover large blocks of ice. The debris may insulate the ice for several hundreds of years. Eventually the blocks of ice melt, leaving depressions called
240:. Larger elements such as boulders and gravel are deposited nearer to the ice margin, while finer elements are carried farther, sometimes into lakes or the ocean. The sediments are sorted by
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After emerging from its ice tunnel a meltwater stream spreads out and slows down, depositing debris. The channels become choked and the stream has to find new routes, which may result in a
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of the valley wall as the glacier passes through a region or sediment deposition by streams flowing into the glacial valley. These sediments settle into a ridge as the glacier retreats.
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Clark, C. D., Hughes, A. L. C., Greenwood, S. L., Spagnolo, M. & Ng, F. S. L. Size and shape characteristics of drumlins, derived from a large sample, and associated scaling laws.
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glacier. Generally the outwash deposits are finer further from the margin of the ice. The deposits often have distinct layers due to the seasonal and episodic changes in stream flow.
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Lateral moraines are ridges of sediment deposited alongside the glacier running parallel to the long axis of the glacier. These sediments are typically deposited on top of the ice (
689:, or kettle holes, are impressions left in a glacial outwash plain by remnant ice of a retreating glacier. As a glacier retreats, chunks of ice may break off in a process known as
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Götz, J., Salcher, B., Starnberger, R. & Krisai, R. Geophysical, topographic and stratigraphic analyses of perialpine kettles and implications for postglacial mire formation.
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The sediment is deposited in bedforms ranging in scale from sand ripples a few centimeters across to gravel bars several hundred meters long. The sedimentary structures such as
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sediments deposited by a meltwater stream into a body of water or river system. As such, kame deltas may be used to indicate a point of inflow into a body of water, such as a
295:
Sometimes stratified drift is deposited in the tunnels that run through or below the glacier. When the ice melts the drift is exposed as long, linear ridges of gravel called
677:
in
Siberia. The different colors of the lakes reflect different amounts of sediment or depth; the deeper or clearer the water, the bluer the lake.
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tool that records patterns of change in a glaciated region. Proglacial lakes may be dammed by a moraine, glacial ice, or may be trapped at the snout of a glacier by the
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On the left, meltwater streams deposit sediments in a subglacial meltwater tunnel. On the right, the presence of a fully formed esker after the retreat of the glacier.
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Gomez, B., Smith, L. C., Magilligan, F. J., Mertes, L. A. K. & Smith, N. D. Glacier outburst floods and outwash plain development: Skeiäarársandur, Iceland.
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Lusardi, B. A., Jennings, C. E. & Harris, K. L. Provenance of Des Moines lobe till records ice-stream catchment evolution during
Laurentide deglaciation.
310:, silt and clay. Kames and kame plateaus usually have bases of laminated muds, and higher up have layers of increasingly coarse sands topped with gravel.
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are shaped by glacial erosion through processes such as glacial quarrying, abrasion, and meltwater. Glacial meltwater contributes to the erosion of
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Hermanowski, P., Piotrowski, J. A. & Duda, P. Till kinematics in the
Stargard drumlin field, NW Poland constrained by microstructural proxies.
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Ground moraines are regions of glacial till that form relatively flat areas or gently rolling hills. Commonly ground moraines are composed of
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around, the erosion happens laterally (left to right) instead of vertically (up and down). These plains are usually found beyond the
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may cut cavities into the base of the ice. As the flood dies down, sediment is deposited into these cavities to form cavity-fill
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ice sheets are several hundred kilometers long. Generally they range in length from a few hundred meters to a few kilometers.
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through both mechanical and chemical processes. Fluvio-glacial processes can occur on the surface and within the glacier. The
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Kettle holes can often be found in the outwash plain of a glacier. Kettle holes can be anywhere from 5 m to 30 km wide.
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Ice contact deposits, including kames, kame plateaus and eskers, mostly consist of sand and gravel but may include beds of
1958:
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Krzyszkowski, D. & Zieliński, T. The
Pleistocene end moraine fans: Controls on their sedimentation and location.
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Glasser, N. F. & Bennett, M. R. Glacial erosional landforms: Origins and significance for palaeoglaciology.
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460:. These mainly consist of silt and clay, with laminations on the millimeter scale. Sometimes they include
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meltwater streams. Outwash plains may contain other glaciofluvial landforms including meltwater streams,
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http://pubs.geoscienceworld.org/gsa/gsabulletin/article-pdf/101/9/1163/3380642/i0016-7606-101-9-1163.pdf
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Carrivick, J. L. & Tweed, F. S. Proglacial Lakes: Character, behaviour and geological importance.
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contain suspended sediment loads, much of which is initially picked up from the underlying landmass.
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Moraines consist of sediments deposited by a glacier and subsequent glacial meltwater also known as
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by streams of water. The deposits are formed beside, below or downstream from the ice. They include
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SALAMON, T. Origin of
Pleistocene outwash plains in various topographic settings, southern Poland.
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Small, R. J. Lateral
Moraines of Glacier De Tsidjiore Nouve: Form, Development, and Implications.
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that happen within the glacier are revealed after the entire glacier melts or partially retreats.
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Landforms resulted from associated erosion and deposition of sediments caused by glacial meltwater
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Shreve, R. L. Esker characteristics in terms of glacier physics, Katahdin esker system, Maine.
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947:"Fluvio" refers to things related to rivers and "glacial" refers to something that is of ice.
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Hilt
Johnson, W. & Menzies, J. Supraglacial and ice-marginal deposits and landforms. in
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Bennett, M. R. The morphology, structural evolution and significance of push moraines.
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below the ice margin. Typically the outwash sediment is carried by fast and turbulent
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582:. Ground moraines and loose till can be shaped into drumlins as the overlying glacier
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is a specific term for a proglacial lake that forms in the over-deepened bowl of a
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Merritt, J. W.; Auton, C. A.; Connell, E. R.; Hall, A. M.; Peacock, J. D. (2003).
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The turbulent and fast-moving meltwater streams cause mechanical erosion through
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formation. Eskers form in ice tunnels within or under a glacier, as shown in
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https://www.britannica.com/science/glacial-landform/Periglacial-landforms
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flow from the ice front into a lowland area they form a broad sandur, or
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A kame delta is a flat-topped landform of well sorted sand and gravel
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due to the high sediment content in the water. Since these streams
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are those that result from the associated erosion and deposition of
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968:"fluvio- - definition of fluvio- in English | Oxford Dictionaries"
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meltwater streams, but occasionally it is carried by catastrophic
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Kame terraces form when a glacial margin rests against a
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Earth Surface Processes, Landforms and Sediment Deposits
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793:: Red Glacier in Lake Clark National Monument (Alaska)
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will tend to slope down and thin out from that point.
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Glacial landform - Meltwater deposits | Britannica.
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THE FORMATION OF MEDIAL MORAINES ON ALPINE GLACIERS
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moraine in upper Engadin left by retreating glacier
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1394:Small, R. J., Clark, M. J. & Cawse, T. J. P.
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806:. River systems in outwash plains typically form
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1886:. Vol. 1, A–I. Routledge. pp. 459–465.
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663:of sediment size is expected in kame deltas.
1526:Principles of Sedimentology and Stratigraphy
605:Glacier and terminal moraine at Tinayrebukta
366:Landforms associated with a receding glacier
1623:. (Cambridge University Press (CUP), 2008).
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1430:Glacial Geology: Ice Sheets and Landforms
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1891:Earle, Steven (September 2019),
1542:Geogr. Ann. Ser. A, Phys. Geogr.
1432:. (John Wiley & Sons, 1996).
1097:10.1016/b978-075064226-2/50013-1
781:
452:Outwash streams often flow into
137:
1814:
1798:
1782:
1737:
1721:
1705:
1689:
1589:
1569:
1518:
1475:
1459:
1388:
1371:
1336:
1116:Benn, Douglas; Evans, D. J. A.
876:of the crust by the glacier. A
626:
1880:"Glacifluvial (glaciofluvial)"
1404:https://www.cambridge.org/core
1081:
1068:
989:
960:
941:
821:
593:
13:
1:
1930:Encyclopedia of Geomorphology
1884:Encyclopedia of Geomorphology
1076:Encyclopedia of Geomorphology
1001:Oxford Dictionaries | English
972:Oxford Dictionaries | English
954:
646:
1927:Goudie, Andrew, ed. (2004).
1856:10.1007/978-1-4020-4411-3_98
768:Drumlins may be composed of
299:. Some eskers formed in the
7:
1878:Brennand, Tracy A. (2004).
887:
740:
128:
10:
2000:
1933:. Vol. 2. Routledge.
1834:
1766:"varved deposit | geology"
1619:Bridge, John; Demicco, R.
1091:317–333 (Elsevier, 2002).
818:deposited by the glacier.
483:
471:
424:Glacial outwash sediment,
224:formed in ice contact and
1916:, Encyclopædia Britannica
1882:. In A. S. Goudie (ed.).
1844:"Glaciofluvial Sediments"
1494:Gutierrez, Mateo (2013).
1058:"Fluvioglacial Landforms"
841:
776:
707:
681:
458:glaciolacustrine deposits
1910:"Glaciofluvial deposits"
1846:, in Gornitz, V. (ed.),
1456:. (Halsted Press, 1975).
934:
617:
208:. They are transported,
178:Glacio-fluvial sediments
149:It has been merged from
63:Fluvio-glacial landforms
1770:Encyclopædia Britannica
1118:Glaciers and Glaciation
35:glaciofluvial landforms
31:Fluvioglacial landforms
838:
794:
756:
733:
678:
606:
557:
528:
432:
426:Knud Rasmussen Glacier
382:
367:
327:
268:
174:Glaciofluvial deposits
170:
152:Glaciofluvial deposits
18:Glaciofluvial deposits
1454:Glacial Geomorphology
1400:Journal of Glaciology
1007:on September 14, 2017
978:on September 14, 2017
833:
789:
752:
725:
669:
601:
545:
523:
512:of glacial presence.
423:
373:
365:
321:
259:
169:glacial outwash plain
165:
1893:"Glacial Deposition"
1637:Geol. Soc. Am. Bull.
1078:. (Routledge, 2004).
874:isostatic depression
252:Ice-contact deposits
244:. They differ from
220:, kame terraces and
1842:Benn, D.I. (2009),
1208:Merritt et al. 2003
1062:Coolgeography.co.uk
456:, where they leave
1600:Soil Geomorphology
1528:. (Prentice Hall).
1029:Prog. Phys. Geogr.
839:
837:in Altai Mountains
795:
757:
734:
679:
607:
558:
550:Nuussuaq Peninsula
529:
433:
383:
368:
328:
326:glacier in Austria
269:
171:
69:surfaces include:
1940:978-0-415-32738-1
1865:978-1-4020-4551-6
1750:, 585–597 (2011).
1734:, 126–131 (2000).
1718:, 362–378 (2009).
1702:, 677–692 (2009).
1686:, 920–934 (2020).
1667:, 315–359 (1979).
1642:, 639–646 (1985).
1547:, 254–271 (2018).
1368:, 250–259 (1983).
1349:, 197–236 (2001).
730:: Esker Formation
673:Landsat image of
603:Terminal moraine:
414:clast imbrication
242:fluvial processes
160:
159:
77:, kame terraces,
43:glacial meltwater
16:(Redirected from
1991:
1964:
1944:
1923:
1922:
1921:
1905:
1904:
1903:
1897:Physical Geology
1887:
1874:
1873:
1872:
1829:
1818:
1812:
1811:, 96–102 (2015).
1802:
1796:
1786:
1780:
1779:
1777:
1776:
1762:
1751:
1741:
1735:
1725:
1719:
1709:
1703:
1693:
1687:
1677:
1668:
1658:
1643:
1633:
1624:
1617:
1606:
1605:
1603:
1593:
1587:
1586:
1584:
1583:
1573:
1567:
1557:
1548:
1538:
1529:
1522:
1516:
1509:
1500:
1499:
1491:
1482:
1479:
1473:
1463:
1457:
1450:
1433:
1426:
1407:
1392:
1386:
1375:
1369:
1359:
1350:
1340:
1334:
1328:
1317:
1311:
1298:
1292:
1286:
1280:
1265:
1259:
1250:
1244:
1238:
1232:
1226:
1220:
1211:
1205:
1190:
1184:
1165:
1159:
1150:
1144:
1138:
1132:
1121:
1114:
1099:
1085:
1079:
1072:
1066:
1065:
1054:
1035:
1025:
1016:
1015:
1013:
1012:
1003:. Archived from
993:
987:
986:
984:
983:
974:. Archived from
964:
948:
945:
919:Glacial Landform
870:geochronological
641:karst topography
537:frost weathering
525:Lateral Moraine:
454:proglacial lakes
358:Outwash deposits
336:hydraulic action
141:
140:
133:
123:proglacial lakes
91:proglacial lakes
21:
1999:
1998:
1994:
1993:
1992:
1990:
1989:
1988:
1969:
1968:
1967:
1961:
1941:
1919:
1917:
1901:
1899:
1870:
1868:
1866:
1837:
1832:
1820:Thorson, R. M.
1819:
1815:
1803:
1799:
1795:, 34–52 (2013).
1790:Quat. Sci. Rev.
1787:
1783:
1774:
1772:
1764:
1763:
1754:
1742:
1738:
1726:
1722:
1710:
1706:
1697:Quat. Sci. Rev.
1694:
1690:
1678:
1671:
1662:Earth Sci. Rev.
1659:
1646:
1634:
1627:
1618:
1609:
1594:
1590:
1581:
1579:
1575:
1574:
1570:
1558:
1551:
1539:
1532:
1523:
1519:
1510:
1503:
1492:
1485:
1480:
1476:
1472:, 73–92 (2002).
1467:Sediment. Geol.
1464:
1460:
1451:
1436:
1427:
1410:
1393:
1389:
1385:, 27–48 (2012).
1380:Quat. Sci. Rev.
1376:
1372:
1360:
1353:
1344:Earth Sci. Rev.
1341:
1337:
1329:
1320:
1312:
1301:
1297:, pp. 6–7.
1293:
1289:
1281:
1268:
1260:
1253:
1245:
1241:
1237:, pp. 1–2.
1233:
1229:
1221:
1214:
1206:
1193:
1185:
1168:
1160:
1153:
1145:
1141:
1133:
1124:
1115:
1102:
1086:
1082:
1073:
1069:
1056:
1055:
1038:
1034:, 43–75 (2004).
1026:
1019:
1010:
1008:
995:
994:
990:
981:
979:
966:
965:
961:
957:
952:
951:
946:
942:
937:
929:Glacial Erosion
890:
865:proglacial lake
861:
859:Proglacial lake
844:
835:Proglacial Lake
824:
784:
779:
743:
710:
695:glacier calving
684:
661:layered bedding
657:proglacial lake
649:
629:
620:
596:
572:
563:
547:Medial Moraine:
518:
516:Lateral moraine
486:
474:
379:Baltoro Glacier
360:
316:
314:Outwash streams
254:
238:outburst floods
156:
142:
138:
131:
28:
23:
22:
15:
12:
11:
5:
1997:
1987:
1986:
1981:
1979:Earth sciences
1966:
1965:
1959:
1945:
1939:
1924:
1906:
1888:
1875:
1864:
1838:
1836:
1833:
1831:
1830:
1813:
1797:
1781:
1752:
1736:
1720:
1704:
1688:
1669:
1644:
1625:
1607:
1596:Gerrard, A J.
1588:
1568:
1549:
1530:
1517:
1501:
1483:
1474:
1458:
1434:
1408:
1387:
1370:
1351:
1335:
1318:
1299:
1287:
1266:
1251:
1239:
1227:
1212:
1191:
1166:
1151:
1149:, p. 581.
1139:
1122:
1100:
1080:
1067:
1036:
1017:
988:
958:
956:
953:
950:
949:
939:
938:
936:
933:
932:
931:
926:
921:
916:
911:
906:
901:
896:
889:
886:
860:
857:
843:
840:
823:
820:
808:braided rivers
783:
780:
778:
775:
742:
739:
709:
706:
683:
680:
648:
645:
628:
625:
619:
616:
595:
592:
571:
570:Ground moraine
568:
562:
561:Medial moraine
559:
517:
514:
485:
482:
473:
470:
387:braided stream
359:
356:
315:
312:
253:
250:
234:fluvio-glacial
230:outwash plains
158:
157:
145:
143:
136:
130:
127:
71:outwash plains
26:
9:
6:
4:
3:
2:
1996:
1985:
1982:
1980:
1977:
1976:
1974:
1962:
1960:9780852724637
1956:
1952:
1946:
1942:
1936:
1932:
1931:
1925:
1915:
1911:
1907:
1898:
1894:
1889:
1885:
1881:
1876:
1867:
1861:
1857:
1853:
1849:
1845:
1840:
1839:
1827:
1823:
1817:
1810:
1807:
1801:
1794:
1791:
1785:
1771:
1767:
1761:
1759:
1757:
1749:
1746:
1740:
1733:
1730:
1724:
1717:
1714:
1708:
1701:
1698:
1692:
1685:
1682:
1681:J. Quat. Sci.
1676:
1674:
1666:
1663:
1657:
1655:
1653:
1651:
1649:
1641:
1638:
1632:
1630:
1622:
1616:
1614:
1612:
1602:
1601:
1592:
1578:
1572:
1565:
1562:
1556:
1554:
1546:
1543:
1537:
1535:
1527:
1521:
1514:
1508:
1506:
1497:
1496:Geomorphology
1490:
1488:
1478:
1471:
1468:
1462:
1455:
1449:
1447:
1445:
1443:
1441:
1439:
1431:
1425:
1423:
1421:
1419:
1417:
1415:
1413:
1405:
1401:
1397:
1391:
1384:
1381:
1374:
1367:
1364:
1358:
1356:
1348:
1345:
1339:
1332:
1331:Brennand 2004
1327:
1325:
1323:
1315:
1310:
1308:
1306:
1304:
1296:
1295:Brennand 2004
1291:
1284:
1283:Brennand 2004
1279:
1277:
1275:
1273:
1271:
1263:
1262:Brennand 2004
1258:
1256:
1248:
1243:
1236:
1235:Brennand 2004
1231:
1224:
1223:Brennand 2004
1219:
1217:
1209:
1204:
1202:
1200:
1198:
1196:
1188:
1183:
1181:
1179:
1177:
1175:
1173:
1171:
1163:
1162:Brennand 2004
1158:
1156:
1148:
1143:
1136:
1135:Brennand 2004
1131:
1129:
1127:
1119:
1113:
1111:
1109:
1107:
1105:
1098:
1094:
1090:
1084:
1077:
1071:
1063:
1059:
1053:
1051:
1049:
1047:
1045:
1043:
1041:
1033:
1030:
1024:
1022:
1006:
1002:
998:
992:
977:
973:
969:
963:
959:
944:
940:
930:
927:
925:
922:
920:
917:
915:
914:Glaciofluvial
912:
910:
907:
905:
902:
900:
897:
895:
892:
891:
885:
883:
879:
875:
871:
866:
856:
854:
850:
836:
832:
828:
819:
817:
813:
809:
805:
801:
792:
791:Outwash Plain
788:
782:Outwash plain
774:
771:
766:
763:
755:
751:
747:
738:
731:
729:
724:
720:
718:
717:
705:
702:
698:
696:
692:
688:
676:
675:pothole lakes
672:
671:Kettle Lakes:
668:
664:
662:
658:
654:
653:glaciofluvial
644:
642:
636:
634:
624:
615:
613:
604:
600:
591:
589:
585:
581:
577:
576:lodgment till
567:
555:
551:
548:
544:
540:
538:
534:
526:
522:
513:
509:
507:
503:
499:
495:
491:
481:
479:
469:
467:
463:
459:
455:
450:
447:
443:
439:
431:
427:
422:
418:
415:
411:
410:cross-bedding
407:
402:
400:
399:outwash plain
395:
391:
388:
380:
376:
372:
364:
355:
353:
347:
345:
341:
337:
332:
325:
322:Mouth of the
320:
311:
309:
304:
302:
298:
293:
291:
286:
281:
278:
274:
271:A subglacial
266:
262:
258:
249:
247:
243:
239:
235:
231:
227:
223:
219:
215:
211:
207:
203:
199:
195:
191:
187:
183:
179:
175:
168:
164:
154:
153:
148:
144:
135:
134:
126:
124:
120:
116:
112:
108:
104:
100:
94:
92:
88:
84:
80:
76:
72:
68:
64:
60:
56:
52:
48:
44:
40:
36:
32:
19:
1949:
1929:
1918:, retrieved
1913:
1900:, retrieved
1896:
1883:
1869:, retrieved
1847:
1821:
1816:
1808:
1805:
1800:
1792:
1789:
1784:
1773:. Retrieved
1769:
1747:
1744:
1739:
1731:
1728:
1723:
1715:
1712:
1707:
1699:
1696:
1691:
1683:
1680:
1664:
1661:
1639:
1636:
1620:
1599:
1591:
1580:. Retrieved
1571:
1563:
1560:
1544:
1541:
1525:
1520:
1495:
1477:
1469:
1466:
1461:
1453:
1429:
1399:
1395:
1390:
1382:
1379:
1373:
1365:
1362:
1346:
1343:
1338:
1333:, p. 4.
1290:
1285:, p. 7.
1264:, p. 1.
1242:
1230:
1225:, p. 2.
1164:, p. 6.
1142:
1137:, p. 5.
1117:
1088:
1083:
1075:
1070:
1061:
1031:
1028:
1009:. Retrieved
1005:the original
1000:
991:
980:. Retrieved
976:the original
971:
962:
943:
862:
845:
834:
825:
804:kettle lakes
796:
790:
767:
758:
753:
744:
735:
727:
726:
715:
714:
711:
703:
699:
685:
670:
650:
637:
630:
627:Kame terrace
621:
608:
602:
573:
564:
546:
533:supraglacial
530:
524:
510:
490:glacial till
487:
475:
451:
434:
403:
394:Outwash fans
392:
384:
375:Braldu River
348:
333:
329:
324:Schlatenkees
305:
294:
282:
270:
246:glacial till
226:outwash fans
177:
173:
172:
150:
146:
95:
79:kettle holes
34:
30:
29:
1806:Geol. Today
1561:J. Glaciol.
1363:J. Glaciol.
1147:Goudie 2004
1074:Goudie, A.
822:Till plains
816:end moraine
762:orientation
691:ice calving
633:valley wall
594:End moraine
580:till plains
381:in Pakistan
352:jökulhlaups
301:Pleistocene
180:consist of
1984:Glaciology
1973:Categories
1951:(Scotland)
1920:2021-01-14
1914:Britannica
1902:2021-01-16
1871:2021-01-16
1775:2017-05-12
1729:Terra Nov.
1582:2017-05-12
1524:Boggs, S.
1314:Earle 2019
1011:2017-05-12
982:2017-05-12
955:References
770:stratified
647:Kame delta
377:below the
340:cavitation
202:ice sheets
41:caused by
1566:, (1977).
1406:. (2021).
1247:Benn 2009
924:Meltwater
894:Ice sheet
554:Greenland
430:Greenland
308:diamicton
273:megaflood
214:deposited
167:Thórsmörk
67:erosional
51:Landforms
39:sediments
1402:vol. 22
904:Landform
888:See also
741:Drumlins
728:Figure 1
716:Figure 1
612:terminus
588:retreats
584:advances
344:abrasion
277:drumlins
267:, Norway
206:glaciers
182:boulders
129:Deposits
115:drumlins
99:moraines
59:deposits
47:Glaciers
1835:Sources
909:Fluvial
899:Glacier
812:meander
754:Drumlin
687:Kettles
494:lateral
484:Moraine
478:kettles
472:Kettles
406:bedding
265:Hedmark
107:kettles
55:bedrock
1957:
1937:
1862:
1745:Boreas
1713:Boreas
882:cirque
842:Varves
802:, and
777:Plains
708:Eskers
682:Kettle
504:, and
502:ground
498:medial
466:deltas
462:varves
446:gravel
297:eskers
290:moulin
222:eskers
210:sorted
186:gravel
121:, and
119:plains
111:eskers
89:, and
87:varves
83:eskers
935:Notes
800:kames
618:Kames
261:Esker
218:kames
200:from
103:kames
75:kames
1955:ISBN
1935:ISBN
1860:ISBN
878:tarn
853:clay
851:and
849:silt
444:and
442:sand
438:silt
412:and
342:and
285:kame
228:and
212:and
198:clay
196:and
194:silt
190:sand
65:and
1852:doi
1545:100
1470:149
1093:doi
693:or
590:.
586:or
508:.
506:end
204:or
176:or
33:or
1975::
1912:,
1895:,
1858:,
1824:.
1809:31
1793:78
1768:.
1755:^
1748:40
1732:12
1716:38
1700:28
1684:35
1672:^
1665:14
1647:^
1640:96
1628:^
1610:^
1564:18
1552:^
1533:^
1504:^
1486:^
1437:^
1411:^
1398:.
1383:38
1366:29
1354:^
1347:53
1321:^
1302:^
1269:^
1254:^
1215:^
1194:^
1169:^
1154:^
1125:^
1103:^
1060:.
1039:^
1032:28
1020:^
999:.
970:.
884:.
863:A
643:.
552:,
500:,
496:,
440:,
428:,
408:,
354:.
338:,
283:A
192:,
188:,
184:,
125:.
117:,
113:,
109:,
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