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Clastic
| Глоссарий геологических терминов |
- (adjective) pertaining to rock or sediment composed mainly of fragments derived from preexisting rocks or minerals and moved from their place of origin. the term indicates sediment sources that are both within and outside the depositional basin. compare - detritus, epiclastic, pyroclastic, volcaniclastic. gg
- Term for a rock composed of broken fragments that are derived from
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Depositional, английский
Epiclastic, английский
Pyroclastic, английский
- Pertaining to fragmented (clastic) rock material formed by a volcanic explosion or ejection from a volcanic vent.
- An igneous rock composed of angular rock fragments that originate from a volcanic explosion.
- (adj.) pertaining to clastic rock particles produced by explosive, aerial ejection from a volcanic vent. such materials may accumulate on land or under water. compare - epiclastic, volcaniclastic, clastic. g. smith & hp
- General term for any rock composed of material ejected explosively from
Volcaniclastic, английский
Pertaining to the entire spectrum of fragmental materials with a preponderance of clasts of volcanic origin. the term includes not only pyroclastic materials but also epiclastic deposits derived from volcanic source areas by normal processes of mass movement and stream erosion. examples: welded tuff, volcanic breccia. hp
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Climbing dune, английский
A dune formed by the piling-up of sand by wind against a cliff or mountain slope; very common in arid regions with substantial local relief and strong, prevailing winds. compare - sand ramp. gg & sw
Cirque platform, английский
A relatively level or bench-like surface formed by the coalescence of several cirques. gg & sw
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