Definition
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
Japan
Italy
Discoverer
Unknown
Marcus Vitruvius Pollio
Etymology
From its occurrence in the Izu-Bonin arc south of Japan
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock