Amphibolite and Gneiss Definition

Definition of Amphibolite and Gneiss

The general Amphibolite and Gneiss definition can be stated as: Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. 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 Amphibolite and Gneiss, get to know about Properties of Amphibolite and Gneiss. Get to know more information about Amphibolite and Gneiss origin and discoverer, etymology and class.

History of Amphibolite and Gneiss

The history of Amphibolite 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.

Amphibolite and Gneiss Origin and Discoverer

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

Etymology of Amphibolite and Gneiss

Along with Amphibolite and Gneiss definition, know more about the etymology of Amphibolite and Gneiss. Etymology of Amphibolite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Amphibolite and Formation of Gneiss. The etymology of Amphibolite is From Amphibole + -ite while that of Gneiss is From Amphibole + -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Amphibolite and Gneiss belong to Metamorphic Rocks. The sub-class, group and other categories of Amphibolite and Gneiss are listed below.

For Amphibolite,

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