
1) Dirt 2) Hardpan 3) Soil
Found on
https://www.crosswordclues.com/clue/caliche

1) Hardpan
Found on
https://www.crosswordclues.com/clue/caliche

Caliche (ka-lee`-chee, or sometimes klee`-chee) is a sedimentary rock, a hardened natural cement of calcium carbonate that binds other materials—such as gravel, sand, clay, and silt. It occurs worldwide, in aridisol and mollisol soil orders—generally in arid or semiarid regions, including in central and western Australia, in the Kalahari Des.....
Found on
http://en.wikipedia.org/wiki/Caliche

A broad term for the more or less cemented deposits of calcium carbonate in many soils of warm, temperate areas, as in the southwestern states. When it is very near the surface or exposed by erosion, the material hardens.
Found on
http://www.americantrails.org/

A type of soil containing calcium carbonate that makes a very hard brick/block without firing, common in the southern USA and South America.
Found on
http://www.encyclo.co.uk/local/20453

A white soil horizon consisting of calcium carbonate, typical of arid and semi-arid areas. Brief heavy rains dissolve calcium carbonate in the upper layers of soil and transport it downward; the rainwater then evaporates rapidly, leaving the calcium carbonate to form a new, solid layer of soil.
Found on
http://www.encyclo.co.uk/local/22291

An accumulation of calcium carbonate at or near the soil surface.
Found on
http://www.physicalgeography.net/physgeoglos/c.html

Caliche is naturally occurring, crude sodium nitrate found in deposits a few feet below the surface in South America. It contains about 20 to 50 percent sodium nitrate and traces of sodium iodate.
Found on
http://www.probertencyclopaedia.com/browse/GC.HTM

Caliche is the name given to naturally occurring crude sodium nitrate found in Chile. Caliche contains from 20 to 50 per cent sodium nitrate and also traces of sodium iodate.
Found on
http://www.probertencyclopaedia.com/browse/HC.HTM

[
n] - crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions 2. [n] - nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
Found on
http://www.webdictionary.co.uk/definition.php?query=caliche

Also called hardpan; an opaque, reddish-brown-to-white calcareous material, which occurs in layers near the surface of stony soils in arid and semiarid areas.
Found on
https://www.encyclo.co.uk/local/20128
noun crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
Found on
https://www.encyclo.co.uk/local/20974

Gravel, sand, or desert debris cement by porous calcium carbonate or other salts.
Found on
https://www.encyclo.co.uk/local/21122

Gravel, sand, or desert debris cemented by calcium carbonate, an accumulated product of chemical weathering in a dry climate. compare claypan, fragipan, hardpan.
Found on
https://www.encyclo.co.uk/local/22327

a soil type common in the West and Southwest containing excessive amounts of calcium carbonate. Caliche soils may be thin or a dozen or more feet thick and can be extraordinarily hard. Caliche placers present significant mining challenges.
Found on
https://www.encyclo.co.uk/local/22703
No exact match found.