grit

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Related to gritstone: breccia, limestone, sandstone

grit

1. any coarse sandstone that can be used as a grindstone or millstone
2. Engineering an arbitrary measure of the size of abrasive particles used in a grinding wheel or other abrasive process

Grit

 

cemented gravel with the texture of sandstone. Grit is widely distributed among sedimentary formations. Its presence is evidence of the intensive erosion of more ancient layers, and it indicates the proximity of a shoal, dry land, or rises (positive forms of basin bottom relief).

grit

[grit]
(geology)
A hard, sharp granule, as of sand.
A coarse sand.
(materials)
An abrasive material composed of angular grains.
(petrology)
A sandstone composed of angular grains of different sizes.

grit

A granular abrasive material (e.g., consisting of particles of aluminum oxide or silicon carbide) which is used to coat cloth, paper, or wheels for sanding, grinding, or polishing; also used to provide a nonslip finish to a surface.
References in periodicals archive ?
In the compaction phase: because of the constant closing of fractures and pores in the coal, a long compaction process can be easily observed, during which the stress and deformation were both large; the gritstone specimen was more uniform than the coal specimen and exhibited a short compaction process, during which the stress was large but the deformation was slight; and by contrast, the fine sandstone specimen showed no obvious compaction process.
Gritstone was quarried in the Iron Age to make hand-powered stones to grind grain ('querns').
Waist belts, Troll's first products, were a direct response to the technical climbing development taking place on Peak District gritstone from the 1950s on.
Certainly, Emily rendered the Haworth dialect with precision,(4) but no sustained match for her fictional families and their region has been found among towns set, like Haworth, amidst the eastward facing moorlands of the gritstone southern Pennines.
On Sunday, July 29, join a trip to the fossil site and gritstone quarry.
He also serves on the board of directors for Gritstone Oncology, Yumanity Therapeutics, Metacrine Inc, Vividion Therapeutics and Mavu Pharma.
Lithology Density Compression strength In-situ model Physical model In-situ (kg [m.sup.-3]) (kg [m.sup.-3]) model (MPa) Siltstone 2 400 1600 27.60 Packsand 2 400 1600 31.50 Gritstone 2 400 1600 36.00 Coal 2 400 1600 16.00 Mudstone 2 250 1500 17.20 Sandy mudstone 2 250 1500 21.10 Silty mudstone 2 250 1500 17.20 Lithology Elastic modulus Material Physical In-situ Physical ratio model model model (kPa) (GPa) (MPa) Siltstone 92.00 4.56 15.20 755 Packsand 105.00 5.04 16.80 782 Gritstone 120.00 4.86 16.20 773 Coal 53.30 2.34 7.80 864 Mudstone 57.40 2.94 9.80 864 Sandy mudstone 70.30 2.94 9.80 864 Silty mudstone 57.40 2.94 9.80 864 Table 2 Position information of the D7-D16 monitoring lines of the overlying strata.
Rare breed rams: D Gritstone to 220gns; Wiltshire to 220gns; Brit Dorper to 140gns; Jacob to 60gns; Southdown to 88gns; Kerry Hill to 52gns; BF to 70gns; Balwen to 50gns; Ryeland to 110gns.
The geologic substratum is made up of loess and loess deposits that cover the Mesozoic and Tertiary lime stone and calcareous gritstone found on the southern Dorogea plateau.
Gritstone built the houses, roads, viaducts, chapels, town halls and the rest of our hill places.
Beltex PS131 PS123 PS115 PS113 PS111(2) PS107 PS103 Inglewood Edge PS107 PS101 PS107 Grassgarth PS99 Prior House PS99 Bothel Parks PS99 Hill House PS99 East Mill Texel PS123 PS113 Highmoor PS121 Greenwood Farm PS119(2) PS117 PS115(2) PS113 PS111 Prior House PS118 Hill House PS111 Grassgarth PS111 Priory Nook Suffolk PS123 Clarks Farm PS109 Mechi Dutch Texel PS109 PS101 Nealhouse Farm Rouge PS95 Kirkland Guards Gritstone PS87 PS83 PS70 Mains Farm Mule PS85 PS79 Clarks Farm PS83 PS80 PS77 Front Street PS79 Riggwood Swaledale PS53 PS51 Manor Farm RAMS Texel PS135 Clarks Farm Beltex PS109 Croft Farm WOOLER APRIL 13 PRIMESTOCK At Wooler on April 13, Harrison & Hetherington held its weekly primestock sale of sheep.