| 释义 |
calicheenUK
ca·li·che C0034100 (kə-lē′chē)n.1. a. A mineral deposit rich in sodium nitrate occurring naturally in Chile, Peru, and the southwest United States, and used as fertilizer, in explosives, and as a raw material for manufacturing nitric acid.b. See sodium nitrate.2. a. The accretions of calcium carbonate in soil.b. See hardpan.
[American Spanish, from Spanish, pebble in a brick, flake of lime, from cal, lime, from Latin calx, calc-, lime; see calx.]caliche (kæˈliːtʃɪ) n1. (Geological Science) Also called: calcrete a bed of sand or clay in arid regions cemented by calcium carbonate, sodium chloride, and other soluble minerals2. (Geological Science) a surface layer of soil encrusted with calcium carbonate, occurring in arid regions. Also called: duricrust [C20: from American Spanish, from Latin calx lime]ca•li•che (kəˈli tʃi)
n. 1. a surface deposit of sodium nitrate found in South American desert areas: formerly a major source of chemical fertilizer. 2. a zone of calcium carbonate or other carbonates in soils of semiarid regions. Compare hardpan. [1855–60; < Sp: flake of lime] Thesaurus| Noun | 1. | caliche - crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regionshardpandirt, soil - the part of the earth's surface consisting of humus and disintegrated rock | | 2. | caliche - nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Perurock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries" |
calicheenUK
caliche[kə′lē·chē] (geology) Conglomerate of gravel, rock, soil, or alluvium cemented with sodium salts in Chilean and Peruvian nitrate deposits; contains sodium nitrate, potassium nitrate, sodium iodate, sodium chloride, sodium sulfate, and sodium borate. A thin layer of clayey soil capping auriferous veins (Peruvian usage). Whitish clay in the selvage of veins (Chilean usage). A recently discovered mineral vein. A secondary accumulation of opaque, reddish brown to buff or white calcareous material occurring in layers on or near the surface of stony soils in arid and semiarid regions of the southwestern United States; called hardpan, calcareous duricrust, and kanker in different geographic regions. Also known as calcareous crust; croute calcaire; nari; sabach; tepetate. calicheGravel, sand, or desert debris cemented by porous calcium carbonate or other salts.AcronymsSeeCLCHcalicheenUK
Synonyms for calichenoun crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regionsSynonymsRelated Wordsnoun nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and PeruRelated Words |