Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
USA
Italy
Discoverer
Unknown
Marcus Vitruvius Pollio
Etymology
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock