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Trachyandesite and Gneiss Definition


Gneiss and Trachyandesite Definition


Definition

Definition
Trachyandesite is an extrusive igneous rock.   
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   

History
  
  

Origin
Indonesia   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite   
From the Middle High German verb gneist (to spark; so called because the rock glitters)   

Class
Igneous Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

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

Texture >>
<< Summary

Definition of Trachyandesite and Gneiss

The general Trachyandesite and Gneiss definition can be stated as: Trachyandesite is an extrusive igneous rock.. 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 Trachyandesite and Gneiss, get to know about Properties of Trachyandesite and Gneiss. Get to know more information about Trachyandesite and Gneiss origin and discoverer, etymology and class.

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History of Trachyandesite and Gneiss

The history of Trachyandesite 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.

Trachyandesite and Gneiss Origin and Discoverer

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

Etymology of Trachyandesite and Gneiss

Along with Trachyandesite and Gneiss definition, know more about the etymology of Trachyandesite and Gneiss. Etymology of Trachyandesite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Trachyandesite and Formation of Gneiss. The etymology of Trachyandesite is From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite while that of Gneiss is From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trachyandesite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Trachyandesite and Gneiss are listed below.

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