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caliche

DEFINITIONS OF: caliche

1

n nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru

Type of:
rock, stone
material consisting of the aggregate of minerals like those making up the Earth's crust

n crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions

Synonyms:
hardpan
Type of:
dirt, soil
the part of the earth's surface consisting of humus and disintegrated rock
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