Noun
A soft or porous stone formed by depositions from water, usually calcareous; -- called also calcareous tufa.
A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria.
Source: Webster's dictionaryExposed tufa towers in Mono Lake; South Tufa, 1981 Mono Lake's "South Tufa " area Conservation efforts main The city of Los Angeles diverted water from the Owens River into the Los Angeles Aqueduct in 1913. Source: Internet
In the tombs dug into the tufa here, none apparently singular, are grave goods of various styles. Source: Internet
Rivers which emerge from springs may produce tufa terraces, consisting of layers of calcite deposited over extended periods of time. Source: Internet
The photo was taken at Mono Lake, and the tufa towers are a prominent part of the landscape. Source: Internet
The sarcophagi are in terracotta or tufa. Source: Internet
Tuff is sometimes called tufa, particularly when used as construction material, although tufa also refers to a quite different rock. Source: Internet