Travertine

Travertine (/ˈtrævərˌtiːn/^[1] TRAV-ər-teen) is a form of terrestrial limestone deposited around mineral springs, especially hot springs. It often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and rusty varieties.^[2]^[3] It is formed by a process of rapid precipitation of calcium carbonate, often at the mouth of a hot spring or in a limestone cave. In the latter, it can form stalactites, stalagmites, and other speleothems. It is frequently used in Italy and elsewhere as a building material. Similar (but softer and extremely porous) deposits formed from ambient-temperature water are known as tufa.

^ "Travertine – Definition for English-Language Learners from Merriam-Webster's Learner's Dictionary". learnersdictionary.com. Archived from the original on 6 March 2019. Retrieved 4 March 2019.
^ Jackson, Julia A., ed. (1997). "travertine". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
^ Monroe, W.H. (1970). "A glossary of Karst terminology". U.S. Geological Survey Water-Supply Paper. 1899-K. doi:10.3133/wsp1899K.

[1] "Travertine – Definition for English-Language Learners from Merriam-Webster's Learner's Dictionary". learnersdictionary.com. Archived from the original on 6 March 2019. Retrieved 4 March 2019.

[Jackson1997-2] Jackson, Julia A., ed. (1997). "travertine". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.

[3] Monroe, W.H. (1970). "A glossary of Karst terminology". U.S. Geological Survey Water-Supply Paper. 1899-K. doi:10.3133/wsp1899K.

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