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Gneiss and Chert Definition


Chert 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   
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   

Class
Metamorphic Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture >>
<< Summary

Definition of Gneiss and Chert

The general Gneiss and Chert 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, Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. Along with definition of Gneiss and Chert, get to know about Properties of Gneiss and Chert. Get to know more information about Gneiss and Chert origin and discoverer, etymology and class.

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History of Gneiss and Chert

The history of Gneiss and Chert 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 Chert Origin and Discoverer

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

Etymology of Gneiss and Chert

Along with Gneiss and Chert definition, know more about the etymology of Gneiss and Chert. Etymology of Gneiss and Chert gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Chert. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Chert 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 Chert belongs to Sedimentary Rocks. The sub-class, group and other categories of Gneiss and Chert are listed below.

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