tufa
灰灰岩,泥泥灰岩,泥泥灰岩岩体,泥泥灰土
Definitions
- 1
Geology.
- : Also called calcareous tufa, calc-tufa, calc-tuff. a porous limestone formed from calcium carbonate deposited by springs or the like.Compare travertine.
- : tuff2.
Examples
In these Etruscan travel essays, pages and pages of descriptions and interpretations are devoted to what he finds inside the tombs, including porches, columns, household items made out of stone and tufa beds.
These are chambers excavated in the tufa on either side of the galleries, with which they communicate by doors, as seen in Fig. 4.
For the same reason the different piani were generally separated by a thick stratum of solid tufa.
At B will be observed the employment of masonry to strengthen the crumbling walls of the friable tufa.
The tufa granolare, on the contrary, was admirably adapted for the construction of these subterranean cemeteries.
The most ancient and lowest stratum of this igneous formation is a compact conglomerate known as tufa lithoide.