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Drift [glacial geology]
| Глоссарий геологических терминов |
A general term applied to all mineral material (clay, silt, sand, gravel, boulders) transported by a glacier and deposited directly by or from the ice, or by running water emanating from a glacier. drift includes unstratified material (till) that forms moraines, and stratified deposits that form outwash plains, eskers, kames, varves, and glaciofluvial sediments. the term is generally applied to pleistocene glacial deposits in areas that no longer contain glaciers. gg
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Transported, английский
Unstratified, английский
Stratified, английский
- This is a feature of an experimental design whereby a scheme of observations is repeated entirely using further sets (strata) of experimental units, with each such further set distinguished by a level of a categorical variable which is distinct from any c
- Слоистый
- (adjective) formed, arranged, or laid down in layers. the term refers to geologic deposits. layers in soils that result from the processes of soil formation are called horizons; those inherited from the parent material are called strata. hp
- General structural term for a sedimentary rock or superficial deposit
Glaciofluvial, английский
Pertaining to streams flowing from glaciers or to deposits made by such
Pleistocene, английский
The epoch of the quaternary period of geologic time (from about 10 to 12 thousand to 1.6 million years ago), following the pliocene epoch and preceding the holocene also the corresponding (timestratigraphic) "series" of earth materials. sw & hp
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Drumlin field, английский
Groups or clusters of closely spaced drumlins or drumlinoid ridges, distributed more or less en echelon, and commonly separated by small, marshy tracts or depressions (interdrumlins). sw
Dredge-deposit shoal, английский
A subaqueous area, substantially shallower than the surrounding area that resulted from the deposition of materials from dredging and dumping (modified from demas 1998). compare - dredged channel, shoal. sss
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