TIVOLI, Italy (AP) — Long ago, when Romans wanted to build a new temple, they would head to the nearby quarries of Tivoli, chisel out blocks of porous rock called lapis tiburtinus — now known as travertine — and float the cargo downstream on rafts to craftsmen in town.
That’s how they made the Colosseum 2,000 years ago. That’s how they made St. Peter’s Basilica and Bernini’s great colonnade hundreds of years later.
Today, the same quarries that built Rome with their distinctive pock-marked travertine are still being dug out to build a new generation of churches, temples and mosques around the world — as well as banks, museums, government buildings and private homes.
While other countries have versions of the sedimentary limestone, Roman travertine is unique because it is quarried underground in the sulfuric springs and basins around Tivoli. Made up mostly of calcium carbonate minerals, Roman travertine was formed hundreds of thousands of years ago by deposits of calcium, sulfur and other minerals, and shows the region’s history of volcanic eruptions, forests and fossils in its striated layers.
It is prized by architects for a number of reasons: It’s strong, plentiful and can withstand any number of climactic and environmental assaults. Depending on how and where it’s cut, it has a variety of looks: rough or sleek, from a warm white with irregular black holes to sandy beige with gray, brown or even greenish veins.
A new Latter-day Saint temple in travertine
For four generations, the Mariotti Carlo SpA stonecutting firm has been carving travertine to order, fulfilling some of the …
