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Glacial drainage channel
| Глоссарий геологических терминов |
A channel formed by an ice-marginal, englacial, or subglacial stream during glaciation. gg
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Subglacial, английский
(a) formed or accumulated in or by the bottom parts of a glacier or ice sheet; said of meltwater streams, till, moraine, etc. (b) pertaining to the area immediately beneath a glacier, as subglacial eruption or subglacial drainage. gg
Glaciation, английский
The formation, movement and recession of glaciers or ice sheets. a collective term for the geologic processes of glacial activity, including erosion and deposition, and the resulting effects of such action on the earth`s surface. gg
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Glacial groove, английский
A deep, wide, usually straight furrow cut in bedrock by the abrasive action of a rock fragment embedded in the bottom of a moving glacier; it is larger and deeper than a glacial striation, ranging in size from a deep scratch to a small glacial valley. compare - flute. gg
Giant ripple, английский
A ripple that is more than 30 m in length; e.g., the jokulhlaup derived giant ripples in camas prairie, mt.; it usually exhibits superimposed megaripples. compare - ripple mark. gg
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