Tufa is a rough, thick, rock-like calcium carbonate deposit that forms by chemical precipitation from bodies of water with a high dissolved calcium content. Tufa is not to be confused with tuff, which is volcanic.
Tufa deposition occurs in seven known ways:
There are some prominent towers of tufa at Mono Lake and Trona Pinnacles in California, USA, formed by the fourth method mentioned above whilst submerged and subsequently exposed by falling water levels. Tufa is also common in Armenia.
Maintaining a high level of stone craftsmanship: Tufitalia--located in Civita Castellana, just outside of Viterbo, Italy--has been quarrying and sculpting historic Tufa Stone for more than 50 years.
May 01, 2006; Used for centuries to build dwellings and villages along the Apennines--a mountain range stretching a little more than 600 miles...
Tectonic Control on Travertine and Calcareous Tufa Deposition in a Low-Temperature Geothermal System (Sarteano, Central Italy)
Jul 01, 2012; Abstract: This paper presents an integrated study directed toward an understanding of the tectonic control on the hydrothermal...