calcareous tufa

American  

noun

1. tufa.

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Etymology

Origin of calcareous tufa

First recorded in 1810–20

Example Sentences

The points on which the streams of water fell are hollowed by its action, and the space around which the water splashed is covered by calcareous tufa, deposited there by the evaporation of the sun.

From The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873 Continued By A Narrative Of His Last Moments And Sufferings, Obtained From His Faithful Servants Chuma And Susi by Waller, Horace

It is in this calcareous tufa alone that fossil animal remains have yet been found.

From The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873 Continued By A Narrative Of His Last Moments And Sufferings, Obtained From His Faithful Servants Chuma And Susi by Waller, Horace

This is the origin of the mineral called travertine or calcareous tufa, which is so commonly met with on the margins of springs, rivers, and waterfalls.

From Geology by Geikie, James

Under certain conditions calcium carbonate is concentrated at or near the earth's surface by chemical agencies, as about springs where calcareous tufa, travertine, etc., are precipitated, and in caverns where stalactites and stalagmites are formed.

From North America by Russell, Israel C. (Cook)

The space between the two series of small stones is filled in with a sheet of melted granite, some twenty-four inches wide, resting on calcareous tufa.

From Manners and Monuments of Prehistoric Peoples by D'Anvers, N.