Boninite and Gneiss Definition

Definition of Boninite and Gneiss

The general Boninite and Gneiss definition can be stated as: 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. On the other hand, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Boninite and Gneiss, get to know about Properties of Boninite and Gneiss. Get to know more information about Boninite and Gneiss origin and discoverer, etymology and class.

History of Boninite and Gneiss

The history of Boninite and Gneiss gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Boninite and Gneiss Origin and Discoverer

Boninite and Gneiss definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Boninite and Gneiss. In this section, you will know about Boninite and Gneiss Origin and Discoverer. Origin of Boninite is Japan whereas Origin of Gneiss is Unknown. It is interesting to know the name of Boninite and Gneiss discoverer. The discoverer of Boninite and Gneiss are Unknown.

Etymology of Boninite and Gneiss

Along with Boninite and Gneiss definition, know more about the etymology of Boninite and Gneiss. Etymology of Boninite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Boninite and Formation of Gneiss. The etymology of Boninite is From its occurrence in the Izu-Bonin arc south of Japan while that of Gneiss is From its occurrence in the Izu-Bonin arc south of Japan. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Boninite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Boninite and Gneiss are listed below.

For Boninite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Fine grained rock and Opaque rock

For Gneiss,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Coarse grained rock, Medium grained rock and Opaque rock