greensandn.

Brit.

/ˈɡriːnsand/, U.S.

/ˈɡrinˌsænd/

Origin: Formed within English, by compounding. Etymons: green adj., sand n.²

Etymology: < green adj. + sand n.²

1. Geology. Also with capital initial. Sand or imperfectly consolidated sandstone of a greenish colour, often resulting from the presence of glauconite; (also) the mineral glauconite. Also: a deposit or stratum of such rock; spec. each of two rock formations (in full Upper Greensand, Lower Greensand) consisting largely of glauconitic sandstone of early Cretaceous age, occurring across much of southern England, and lying respectively above and below the gault clay.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > sandstone > greensand

greensand1700

fox-mould1808

carstone1815

malm rock1833

potash greensand1869

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > glauconite

green earth1794

glauconite1836

greensand1873

1700 Philos. Trans. (Royal Soc.) 22 485 Above this Chalk the Oyster-shells lye in a bed of green Sand.

1796 R. Kirwan Elements Mineral. (ed. 2) II. 149 Green Sand of Peru. Its colour is Grass Green..contains about 56 per cent. of Copper.

1815 W. Smith Mem. to Map Strata Eng. & Wales 42 In the western parts..the sand immediately beneath the chalk is generally called green sand.

1824 W. H. Fitton in Ann. Philos. New Ser. 8 461 It has been suggested to me..that the terms upper and lower greensand would be preferable, for the denomination of the beds which I have named firestone and greensand.

1847 D. T. Ansted Anc. World x. 228 The Upper Greensand is generally barren of fossils.

1873 J. W. Dawson Story Earth & Man ix. 229 The mineral Glauconite or ‘green-sand’.

1922 J. C. Hughes Geol. Story Isle of Wight vi. 37 Some prefer to call the Lower Greensand Vectian..and the Upper Greensand Selbornian.

1946 H. Woods Palæontol. Invertebr. (ed. 8) 54 Parkeria, which is found in the Cambridge Greensand, probably belongs to this Order.

1965 G. J. Williams Econ. Geol. N.Z. i. 3/1 The limestones were followed in many areas by disconformities on which greensand accumulated.

2004 R. J. Lisle Geol. Structures & Maps (ed. 3) ii. 24 The base of the Lower Greensand..encountered in three boreholes in Suffolk.

2. Usually in form green sand. Moist or undried sand used for making moulds for casting. Cf. green adj. 6e.

ΘΚΠ

society > occupation and work > materials > raw material > sand > [noun] > types of

river sand1579

callis sand1594

pit sand1700

greensand1831

1831 J. Holland Treat. Manuf. Metal I. 71 Green sand, as that used in moist casting, in contradistinction to dry, is termed by the workmen.

1851 F. Overman Moulder's & Founder's Pocket Guide i. 31 In making a mould for a small piece of machinery..in green-sand, the pattern is put upon a flat board..laid perfectly level upon the floor of the foundry.

1906 Jrnl. Iron & Steel Inst. 70 174 The castings were all made in green sand, and were allowed to cool before being ‘knocked out’.

1984 D. Hill Hist. Engin. Classical & Medieval Times (1996) vi. 108 The central part of each leaf was made from brass, using closed mould-boxes with green sand.

2009 A. Deng et al. in L. K. Wang et al. Waste Treatm. Metal Manufacturing iv. 158 Green sand consists of 85 to 95% high-quality silica sand, 4 to 10% bentonite clay (as a binder), 2 to 5% water, and 2 to 10% sea coal.

Compounds

Simple attributive, chiefly in sense 1.

ΚΠ

1811 J. Farey Gen. View Agric. Derbyshire I. 112 The Aylesbury Limestone strata with green sand-beds, are remarkable for their large Cornua-ammonis..&c.

1815 J. Kidd Geol. Ess. ii. 34 These organic remains occur in the green sand stratum and beneath the chalk in the beds of limestone belonging to it.

1894 Geol. Mag. Oct. 460 It is..clearly marked by the Upper Greensand anticline of the Vale of Pewsey.

1949 A. K. Hamilton Castings 15 If a sheave pulley..is to be cast with the groove formed by the green sand mould, the pattern must be split through the web.

1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) x. 231 Siliceous sponges..the source of the silica of chalk-flints and greensand cherts.

2005 R. K. Rajput Comprehensive Workshop Pract. (new ed.) ii. 90 Sand moulds with a dry sand facing and a green sand backing.

2008 E. Royte Bottlemania ix. 208 Two state-of-the-art treatment plants, complete with aeration towers, greensand filters, and an ultraviolet disinfection system.

This entry has been updated (OED Third Edition, June 2011; most recently modified version published online June 2022).

单词	greensand
释义	greensandn. Brit. /ˈɡriːnsand/, U.S. /ˈɡrinˌsænd/ Origin: Formed within English, by compounding. Etymons: green adj., sand n.² Etymology: < green adj. + sand n.² 1. Geology. Also with capital initial. Sand or imperfectly consolidated sandstone of a greenish colour, often resulting from the presence of glauconite; (also) the mineral glauconite. Also: a deposit or stratum of such rock; spec. each of two rock formations (in full Upper Greensand, Lower Greensand) consisting largely of glauconitic sandstone of early Cretaceous age, occurring across much of southern England, and lying respectively above and below the gault clay. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > sandstone > greensand greensand1700 fox-mould1808 carstone1815 malm rock1833 potash greensand1869 the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > glauconite green earth1794 glauconite1836 greensand1873 1700 Philos. Trans. (Royal Soc.) 22 485 Above this Chalk the Oyster-shells lye in a bed of green Sand. 1796 R. Kirwan Elements Mineral. (ed. 2) II. 149 Green Sand of Peru. Its colour is Grass Green..contains about 56 per cent. of Copper. 1815 W. Smith Mem. to Map Strata Eng. & Wales 42 In the western parts..the sand immediately beneath the chalk is generally called green sand. 1824 W. H. Fitton in Ann. Philos. New Ser. 8 461 It has been suggested to me..that the terms upper and lower greensand would be preferable, for the denomination of the beds which I have named firestone and greensand. 1847 D. T. Ansted Anc. World x. 228 The Upper Greensand is generally barren of fossils. 1873 J. W. Dawson Story Earth & Man ix. 229 The mineral Glauconite or ‘green-sand’. 1922 J. C. Hughes Geol. Story Isle of Wight vi. 37 Some prefer to call the Lower Greensand Vectian..and the Upper Greensand Selbornian. 1946 H. Woods Palæontol. Invertebr. (ed. 8) 54 Parkeria, which is found in the Cambridge Greensand, probably belongs to this Order. 1965 G. J. Williams Econ. Geol. N.Z. i. 3/1 The limestones were followed in many areas by disconformities on which greensand accumulated. 2004 R. J. Lisle Geol. Structures & Maps (ed. 3) ii. 24 The base of the Lower Greensand..encountered in three boreholes in Suffolk. 2. Usually in form green sand. Moist or undried sand used for making moulds for casting. Cf. green adj. 6e. ΘΚΠ society > occupation and work > materials > raw material > sand > [noun] > types of river sand1579 callis sand1594 pit sand1700 greensand1831 1831 J. Holland Treat. Manuf. Metal I. 71 Green sand, as that used in moist casting, in contradistinction to dry, is termed by the workmen. 1851 F. Overman Moulder's & Founder's Pocket Guide i. 31 In making a mould for a small piece of machinery..in green-sand, the pattern is put upon a flat board..laid perfectly level upon the floor of the foundry. 1906 Jrnl. Iron & Steel Inst. 70 174 The castings were all made in green sand, and were allowed to cool before being ‘knocked out’. 1984 D. Hill Hist. Engin. Classical & Medieval Times (1996) vi. 108 The central part of each leaf was made from brass, using closed mould-boxes with green sand. 2009 A. Deng et al. in L. K. Wang et al. Waste Treatm. Metal Manufacturing iv. 158 Green sand consists of 85 to 95% high-quality silica sand, 4 to 10% bentonite clay (as a binder), 2 to 5% water, and 2 to 10% sea coal. Compounds Simple attributive, chiefly in sense 1. ΚΠ 1811 J. Farey Gen. View Agric. Derbyshire I. 112 The Aylesbury Limestone strata with green sand-beds, are remarkable for their large Cornua-ammonis..&c. 1815 J. Kidd Geol. Ess. ii. 34 These organic remains occur in the green sand stratum and beneath the chalk in the beds of limestone belonging to it. 1894 Geol. Mag. Oct. 460 It is..clearly marked by the Upper Greensand anticline of the Vale of Pewsey. 1949 A. K. Hamilton Castings 15 If a sheave pulley..is to be cast with the groove formed by the green sand mould, the pattern must be split through the web. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) x. 231 Siliceous sponges..the source of the silica of chalk-flints and greensand cherts. 2005 R. K. Rajput Comprehensive Workshop Pract. (new ed.) ii. 90 Sand moulds with a dry sand facing and a green sand backing. 2008 E. Royte Bottlemania ix. 208 Two state-of-the-art treatment plants, complete with aeration towers, greensand filters, and an ultraviolet disinfection system. This entry has been updated (OED Third Edition, June 2011; most recently modified version published online June 2022). < n.1700
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