Travertine Formation

ROMAN TRAVERTINE - SEDIMENTATION PROCESS

How it is formed

Roman Travertine, Roman Travertine Sales

Pliocene - Antique Sea

During the Pliocene, that is around 10 million years ago, big part of the Italian peninsula was invaded by the sea, therefore also the area of Tivoli and Guidonia, it were submerged by this ancient sea that it arrived until under the slopes of the Tiburtini Mountains and Cornicolani (Marcellina and Palombara, Rome), where now the sandy grounds are well visible with numerous sea fossils that  testify the ancient presence of the sea

10 Million years ago

1 Million years ago

The end of Pliocene - Quaternary Start

In the basin of Tivoli and Guidonia, (Rome, Italy) circa at the end of the Pliocene, for a continuous lifting of the continental area, this ancient sea started to regress up to retire completely in the Quaternary era. In this area the basin looked as a wide depressed  form of basin.

Gone up waters and precipitation of CaCO3

At this point in this depressed area the water started to go up again in surface of the warm waters thermo mixed with gas sulphurous coming from the last volcanic demonstrations of the  Albani Hills; they were the consequence of the consolidation of the magmas of the ancient roman volcano. Having through during their walk huge calcareous masses, these waters had dissolved the CaCO3 of it and they had enriched abundantly. They exploited as points of gone up again an enormous breaking of the underlying grounds and they were pushed upward by the sulphurous gases, that accompany them. Once in surface, they started to flow out towards lower points of the basin. Besides, as soon as in surface, rich of calcium bicarbonate, they suffered a lowering of temperature and pressure. Just these lowering of temperature and pressure were the conditions that favored the precipitation and therefore the following sedimentation of the CaCO3

100 Millions of years ago

50 Millions years ago

Sedimentation Cycles

The goes up again of the thermo waters in surface it was not continuous by the time, but no very often it was disturbed by alluvial floods due to the course of water that, limiting the ability of gone up again of the water, it provoked a temporary stasis of sedimentation. At the end of the flood, the thermo water regained their ability of gone up again a new cycle of sedimentation it was established. That’s why the reason that the travertine has in benches or layers sometimes delimited by a light clayey level, due surely to the flood of the time. The whole of all these cycles of sedimentation has filled the ancient area depressed of the basin of Tivoli and Guidonia, Rome, assuming the current rather flat forme.

Bruno Poggi Eredi srl

Travertine, Roman Travertine

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