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• n  crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
• n  nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru

• The "caliche," or nitrate-bearing earth, is broken up with explosives, loaded into cars by hand.
• Because we have been depend ent in large measure for nitrogen on imports of nitrate of soda from Chile (there occurring as a natural mineral caliche, it has been suggested .
• The range grass was sparse now among the limestone and caliche.

• hardpan

News & Articles

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• Going underground: Extensive Cold War-era bomb shelters dot the valley
  Ever wonder why basements are rare in Southern Nevada, while they’re fairly common in other parts of the country? Most are quick to point to the stubborn caliche sedentary rock concentrated in local soil, but that’s only part of it. The other reason, says Courtney Mooney, historian with the city of Las Vegas, is that the water table in Las Vegas is high, and subterranean structures often flood ...
  July 4, 2013 - Las Vegas CityLife

Quotes

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• Arnold Palmer in Waggle Room (blog)
  The weather that week was pretty tough-horrible, in fact,says Arnold Palmer , who finished sixth. "It snowed, and it was very muddy. You were two inches taller when you finished than when you started with that great Texas caliche on your...