A long, narrow, sinuous ridge created by deposits from a stream running beneath a glacier
A narrow long ridge like form comprised mainly of gravel and sand These stratified glacio-fluvial deposits were formed in a stream bed flowing inside the ice of a glacier generally at the glacier bottom The glacio- fluvial deposits were then left in place after the ice melted
A sinuous ridge of sand and gravel deposited by a meltwater stream flowing within a tunnel under a glacier or ice sheet
a long, winding ridge of sand and gravel deposited by meltwater rivers flowing through the ice of a glacier
A long, low, narrow, sinuous, steep sided ridge or mound composed of irregularly stratified sand and gravel that was deposited by a subglacial or englacial stream flowing between ice walls or in an ice tunnel of a continuously retreating glacier, left behind when the ice melted
An esker is a sinuous ridge of stratified fluvial sediments deposited underneath a glacier in meltwater channels These channels are initially eroded both into the underlying bedrock, but as the channel fills it begins to erode into the overlying ice while continuing to deposit sediments When the ice retreats these channel deposits are left behind as topographic highs Eskers vary greatly in size and extent, but can be 100 feet high and 100 miles long
A winding ridge of sand and gravel deposited in a tunnel or channel beneath or on top of a glacier
A sinuous ridge formed of rounded sand and gravel deposited by the streams that flowed through tunnels at the base of the glacier The Parnell Esker in the Northern Kettle Moraine is the most-famous Other notable eskers are in Polk and Taylor counties
A narrow, sinuous ridge of sorted sands and gravels deposited by a supraglacial, englacial or subglacial stream
A ridge of sediment that forms under a glacier's zone of ablation, made up of sand and gravel deposited by meltwater An esker may be less than 100 meters or more than 500 kilometers long, and may be anywhere from 3 to over 300 meters high
Linear type of ice-contact stratified deposit formed in subglacial channels and commonly having a sharply peaked ridgelike profile in cross section
A narrow, winding ridge made of gravel usually formed by streams flowing on a glacier or in a tunnel below the glacier or ice sheet
A long, narrow, sinuous, steep-sided ridge composed of irregularly stratified sand and gravel that was deposited by a subglacial or supraglacial stream flowing between ice walls, or in an ice tunnel of a retreating glacier, and was left behind when the ice melted Eskers range in length from less than a kilometer to more than 160 km, and in height from 3 to 30 m
A long, narrow, sinuous, steep-sided ridge composed of irregularly stratified sand and gravel that was deposited by a subglacial or englacial stream flowing between ice walls or in an ice tunnel of a stagnant or retreating glacier, and was left behind when the ice melted It may be branching and is often discontinuous, and its course isusually at a high angle to the edge of the glacier Eskers range in length from less than 100m to more than 500km (if gaps are included), and in height from 3 to more than 200m
A long ridge of material deposited from meltwater streams running subglacially, roughly parallel to the direction of ice flow
A long, narrow, often curving ridge or mound of sand, gravel and boulders deposited by a stream flowing on, within or beneath a stagnant glacier
(Es-ker) n a long, narrow ridge of coarse gravel deposited by a stream flowing in or under a melting glacier or glacial ice sheet
winding steep-walled ridge formed beneath a glacier estuary river mouth widening into the sea, where fresh water mixes with salt water and tidal effects are felt eustatic change worldwide rise or fall in sea level caused by a change in the amount of water in the oceans eutrophication the excessive enrichment of rivers, lakes, and shallow sea areas, primarily by nitrate fertilizers washed from the soil by rain, and by phosphates from fertilizers and detergents in municipal sewage These encourage the growth of algae and bacteria which use up the oxygen in the water, thereby making it uninhabitable for fishes and other animal life evaporation process by which a liquid gradually turns to vapour
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