calcareous tufa
Tufa 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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • calcareous tufa — tufa (def. 1). [1810 20] * * * calcareous tufa see ↑tufa • • • Main Entry: ↑calcareous …   Useful english dictionary

  • calcareous tufa — n. TUFA …   English World dictionary

  • calcareous tufa — tufa (def. 1). [1810 20] * * * …   Universalium

  • calcareous tufa —    See sinter …   Lexicon of Cave and Karst Terminology

  • Tufa — 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… …   The Collaborative International Dictionary of English

  • Tufa — Not to be confused with tuff, a porous volcanic rock. This article is about the geological formation. For the historic Chinese name, see Southern Liang. Tufa columns at Mono Lake, California Tufa is a variety of limestone, formed by the… …   Wikipedia

  • tufa — tufaceous /tooh fay sheuhs, tyooh /, adj. /tooh feuh, tyooh /, n. Geol. 1. Also called calcareous tufa, calc tufa, calc tuff. a porous limestone formed from calcium carbonate deposited by springs or the like. Cf. travertine. 2. (not in technical… …   Universalium

  • Calcareous sinter — Sinter Sin ter, n. [G. Cf. {Cinder}.] (Min.) Dross, as of iron; the scale which files from iron when hammered; applied as a name to various minerals. [1913 Webster] {Calcareous sinter}, a loose banded variety of calcite formed by deposition from… …   The Collaborative International Dictionary of English

  • calcareous spar — Calcite Cal cite (k[a^]l s[imac]t), n. [L. calx, calcis, lime.] (Min.) Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble.… …   The Collaborative International Dictionary of English

  • tufa — noun a) the calcareous deposit of lime found near hot springs b) the volcanic rock tuff …   Wiktionary

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