Gneiss and Pyrolite Definition

Definition of Gneiss and Pyrolite

The general Gneiss and Pyrolite definition can be stated as: 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. On the other hand, Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt. Along with definition of Gneiss and Pyrolite, get to know about Properties of Gneiss and Pyrolite. Get to know more information about Gneiss and Pyrolite origin and discoverer, etymology and class.

History of Gneiss and Pyrolite

The history of Gneiss and Pyrolite 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.

Gneiss and Pyrolite Origin and Discoverer

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

Etymology of Gneiss and Pyrolite

Along with Gneiss and Pyrolite definition, know more about the etymology of Gneiss and Pyrolite. Etymology of Gneiss and Pyrolite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Pyrolite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Pyrolite is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Pyrolite belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Pyrolite are listed below.

For Gneiss,

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

For Pyrolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock