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单词 cryoconite
释义

cryoconiten.

Brit. /krʌɪə(ʊ)ˈkəʊnʌɪt/, U.S. /ˌkraɪoʊˈkoʊnaɪt/
Forms: 1800s– cryoconite, 1800s– cryokonite, 1800s– kryoconite, 1800s– kryokonite.
Origin: A borrowing from Greek, combined with English elements. Etymons: cryo- comb. form, Greek κόνις , -ite suffix1.
Etymology: < cryo- comb. form + ancient Greek κόνις dust (see conite n.) + -ite suffix1.
Geology.
A grey sediment found at the bottom of holes in the surface of an ice field or glacier, consisting chiefly of wind-blown dust and often also microorganisms.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > glacial > powder in glacier holes
cryoconite1872
1872 A. E. Nordenskiöld in Geol. Mag. 9 356 The substance is not a clay, but a sandy trachytic mineral... I propose for this substance the name Kryokonite.
1891 Standard 9 Feb. The mysterious ‘kryokonite’ of the vast icefields of Greenland is now believed to be..simply dust blown from America or Europe.
1924 Nature 22 Mar. 418/1 The authors adopt the term ‘cryoconite’ for wind-blown sand in the ice.
1963 J. L. Dyson World of Ice xii. 138 Cryoconite contains a considerable amount of organic material in the form of several kinds of blue-green algae and fungi.
2000 W. F. Vincent in B. A. Whitton & M. Potts Ecol. Cyanobacteria xii. 324/2 All of the samples of cryoconite..contained fine mineral particulates loosely bound by the filaments of this cyanobacterium.

Compounds

cryoconite hole n. a hole in an ice surface containing a deposit of cryoconite (typically a cylindrical and water-filled hole).
ΚΠ
1899 Geogr. Jrnl. 14 165 The process of thawing..presented more than one feature of interest, such as cylindrical melting-holes (cryoconite holes) of different sizes.
1925 N. E. Odell in E. F. Norton et al. Fight for Everest: 1924 311 On the East Rongbuk Glacier were some rather beautiful examples of the so-called ‘cryoconite holes’ or ‘dust holes’.
2007 Belfast Tel. (Nexis) 1 May She also plans to map the distribution of cryoconite holes on Union Glacier, dark patches on the ice..formed by rock sediment.
This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022).
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n.1872
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更新时间:2024/11/10 15:15:17