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Variolite and Shale Definition


Shale and Variolite Definition


Definition

Definition
Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance   
Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles   

History
  
  

Origin
France   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From Latin varius, speckled, variegated   
From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate,   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

Other Categories
Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture >>
<< Summary

Definition of Variolite and Shale

The general Variolite and Shale definition can be stated as: Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. On the other hand, Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Along with definition of Variolite and Shale, get to know about Properties of Variolite and Shale. Get to know more information about Variolite and Shale origin and discoverer, etymology and class.

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History of Variolite and Shale

The history of Variolite and Shale 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.

Variolite and Shale Origin and Discoverer

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

Etymology of Variolite and Shale

Along with Variolite and Shale definition, know more about the etymology of Variolite and Shale. Etymology of Variolite and Shale gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Shale. The etymology of Variolite is From Latin varius, speckled, variegated while that of Shale is From Latin varius, speckled, variegated. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Variolite belongs to Igneous Rocks while Shale belongs to Sedimentary Rocks. The sub-class, group and other categories of Variolite and Shale are listed below.

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