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Crag and tail
| Глоссарий геологических терминов |
An elongate hill or ridge of subglacially streamlined drift, having at the stoss end (up-ice) a steep, often precipitous face or knob of ice-smoothed, resistant bedrock (the “crag”) obstructing the movement of the glacier, and at the lee end (down-ice) a tapering, streamlined, gentle slope (the “tail”) of intact, weaker rock and / or drift protected by the crag; also called lee-side cone. compare - drumlin, drumlinoid ridge, flute, stoss and lee. gg, sw, & gm
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Streamlined, английский
Precipitous, английский
Term sometimes used instead of “very high” for seas of force 8 on the douglas wave scale (table 2).
Drumlinoid, английский
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
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Crater [volcanic], английский
A basin-like, rimmed structure, usually at the summit of a volcanic cone. it may be formed by collapse, by an explosive eruption or by the gradual accumulation of pyroclastic material into a surrounding rim. compare - caldera. gg
Cradle and knoll topography, английский
(not recommended) use tree-tip pit and mound topography.
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