Home
Compare Rocks


Gneiss and Scoria Definition


Scoria 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   
Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture >>
<< Summary

Definition of Gneiss and Scoria

The general Gneiss and Scoria 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, Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. Along with definition of Gneiss and Scoria, get to know about Properties of Gneiss and Scoria. Get to know more information about Gneiss and Scoria origin and discoverer, etymology and class.

Compare Metamorphic Rocks

History of Gneiss and Scoria

The history of Gneiss and Scoria 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 Scoria Origin and Discoverer

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

Etymology of Gneiss and Scoria

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

For Gneiss,

For Scoria,

Metamorphic Rocks

Metamorphic Rocks

» More Metamorphic Rocks

Compare Metamorphic Rocks

» More Compare Metamorphic Rocks