Calcareous Tufa

calcareous tufa

[kal′ker·ē·əs ′tü·fə]
(geology)
tufa

Calcareous Tufa

 

or travertine, porous, cellular rock formed from the precipitation of calcium carbonate from hot or cold springs. It often contains impressions of plants and sometimes the shells of land or freshwater gastropods. It is characterized by a small density (1,400–1,800 kg/m3). In the USSR calcareous tufa commonly occurs near Piatigorsk, near Yerevan, in Podolia, and near Pudozh. It is used as a building material, as decorative stone, and for roasting lime.

Mentioned in ?
References in periodicals archive ?
Fabrizio Felletti (2010), "The Calcareous Tufa in the Tadrart Acacus Mt.
Quaternary tufa profiles, Jabal Farasan--Wadi Qedid area, southern Saudi Arabia
These beds dominantly are comprised of calcareous tufa and lake limestone.
Mineralogy, petrology and chemical composition of some calcareous tufa from the Schwabische Alb, Germany, in Muller, G.; Friedman, G.
Geochemistry of freshwater calcareous sediments and longevity impacts of their application to acidic soils of eastern Lithuania/Geochemine gelavandeniu kalkinguju nuosedu sudeties variacija ir ju naudojimo palikimas rugstiems ryty lietuvos dirvozemiams
The interval 293-95 cm comprises brown-beige (2.5Y 8/2) pure calcareous tufa. The tufa is massive, light beige (2.5Y 7/3) and very pure (carbonate content up to 98%; Fig.
Changes in the Early Holocene lacustrine environment inferred from the subfossil ostracod record in the Varangu section, northern Estonia/ Vara-Holotseenis toimunud jarvelise basseini ja keskkonna muutused Pohja-Eestis ostrakoodide subfossiilileidude pohjal Varangu labiloikest

Encyclopedia browser ?
Full browser ?