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Boulder field
| Глоссарий геологических терминов |
(not recommended) use block stream. compare - block field.
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Boulder, английский
- A naturally rounded rock fragment larger than 10 in. (25 cm) in diameter; used for crude walls and foundations, generally in mortar.
- In a general sense, any large, usually rounded, fragment of rock lying on the surface or embedded in soil or overburden or in glacial water-deposited materials. in a strict sense, as recommended in the proceedings of the asce, vol. 84, no. sm4, october 1958, a rock fragment usually rounded by weathering or abrasion, having an average dimension of 12 inches or more.
- Валун, валунный камень (диаметром свыше 250 мм)
- Per astm d653, a rock fragment, usually rounded by weathering or abrasion, with a dimension of 12 in. (305 mm) or more.
Boulder (var, английский
Boulder area trails coalition, английский
Boulder blasting, английский
Boulder buster, английский
- A heavy, pyramidical- or conical-point steel tool, which may be attached to the bottom end of a string of drill rods and used to break, by impact, a boulder encountered in a borehole. also called boulder cracker.
- An explosive used to break rock fragments by blockholing or mudcapping methods.
Boulder clay, английский
- The stiff, hard, and usually unstratified clay of glacial origin in which boulders are scattered at random.
- Local british term for till; considered inaccurate because neither
Boulder clay (loam), английский
Boulder cracker, английский
Boulder ditch, английский
A french drain.
Boulder flat, английский
Boulder garden, английский
Boulder gravel, английский
Boulder loam, английский
Boulder motion, английский
Boulder quarry, английский
Boulder stone, английский
Boulder wall, английский
A wall constructed of boulders set in mortar.
Boulderet, английский
Bouldering, английский
The practice of climbing on large boulders. typically this is close to the ground, so protection takes the form of crash pads and spotting instead of belay ropes.
Boulders, английский
- Stones worn and rounded by the attrition of the waves of the sea: the word, on the authority of hunter, was considered a technical term in the fourteenth century, as appears in a warrant of john of gaunt for the repair of pontefract castle—“de peres, appeles buldres, a n`re dit chastel come nous semblerez resonables pur la defense de meisme.”
- Rock fragments greater than 200mm in size.
Recommended, английский
- Refer to oxbow) an abandoned meander, commonly filled in by deposition and vegetation, but still discernable. gg
- The collection title for recommendation items that can be either based on personalization algorithm or not covered by any personalization data.
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Bowl [gilgai], английский
A cup-or trough-shaped subsurface feature centered under and surrounding the micro-low of a gilgai, commonly 3-5 m across and 1.5-3 m thick, containing numerous slickensides (oblique slip / shear faces) within it and bounded at its base by master slickensides. a bowl contains turbated material produced in soils with substantial smectitic clay (e.g. vertisols). bowl morphology is distinct from that in adjacent microhighs (chimney) and underlying horizons: substratum morphology is not preserved within the bowl.
Bomb [volcanic], английский
A pyroclast > 64 mm in at least one dimension that was ejected while still viscous and solidified into it’s rounded form in flight. compare - block, cinder, lapilli, tephra. gg
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