Definitions for: Tufa


[n] hard volcanic rock composed of compacted volcanic ash
[n] a soft porous rock consisting of calcium carbonate deposited from springs rich in lime



Webster (1913) Definition: Tu"fa, [It. fufo soft, sandy stone, L. tofus, tophus. Cf.
Tofus, Toph, and Tophin.] (Min.)
(a) A soft or porous stone formed by depositions from water,
usually calcareous; -- called also calcareous tufa.
(b) A friable volcanic rock or conglomerate, formed of
consolidated cinders, or scoria.

Synonyms: calc-tufa, tuff

See Also: rock, stone, volcanic rock

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