Holocene

Tufa

January 1, 201312:00 pmMay 26, 2016 9:07 am

A porous variety of limestone similar to travertine, formed by flowing water containing large amounts of dissolved calcium carbonate precipitating over moss and other vegetation. It is easy to saw when wet but dries to a strong, light building stone which is used wherever it is found. Notable areas of formation and use are the […]