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Gneiss and Pyrolite Definition


Pyrolite and Gneiss Definition


Definition

Definition
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   
Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt   

History
  
  

Origin
Unknown   
Pike County, U.S   

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From the chemical and mineralogical composition of the upper mantle of the Earth   

Class
Metamorphic Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock   
Coarse Grained Rock, Opaque Rock   

Texture >>
<< Summary

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.

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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.

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For Pyrolite,

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