Over three field seasons we examined the physical and hydraulic characteristics of englacial water flow. |
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Since this englacial rock has suffered little wear since falling on the ice, it is likely to consist in part of large and only moderately rounded boulders. |
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It was deposited by a subglacial or englacial stream flowing between ice walls or in an ice tunnel of a stagnant or retreating glacier. |
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Eskers are the sinuous ridges composed of glacial material deposited by meltwater currents in englacial tunnels. |
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Esker, also spelled eskar, or eschar, a long, narrow, winding ridge composed of stratified sand and gravel deposited by a subglacial or englacial meltwater stream. |
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South of the Ottawa River, glaciofluvial sediments were deposited at the margin of the retreating ice lobes, as interlobate deposits, or as englacial or subglacial deposits. |
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The highlands are built of tills and of englacial and marginal glaciofluvial sands and gravel. |
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Eskers are the infillings of ice-walled stream channels, and may record deposition in subglacial, englacial or supraglacial drainage networks. |
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Undulating topography results in change between compressive and transgressive flow and stacking or mixing of englacial debris. |
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The predominance of non-local lithologies suggest that the till is englacial or supraglacial, most likely deposited from stagnant or retreating ice. |
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Variability in temperature, precipitation, and englacial and subglacial hydrology can strongly determine the evolution of a glacier in a particular season. |
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Exceptions to this trend are caused by the release of far-traveled carbonates from the englacial load of glaciers during formation of end moraines. |
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