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Greywacke and Shonkinite Definition


Shonkinite and Greywacke Definition


Definition

Definition
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay   
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents   

History
  
  

Origin
Unknown   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From German Grauwacke, from grau grey + wacke   
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture >>
<< Summary

Definition of Greywacke and Shonkinite

The general Greywacke and Shonkinite definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. Along with definition of Greywacke and Shonkinite, get to know about Properties of Greywacke and Shonkinite. Get to know more information about Greywacke and Shonkinite origin and discoverer, etymology and class.

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History of Greywacke and Shonkinite

The history of Greywacke and Shonkinite 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.

Greywacke and Shonkinite Origin and Discoverer

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

Etymology of Greywacke and Shonkinite

Along with Greywacke and Shonkinite definition, know more about the etymology of Greywacke and Shonkinite. Etymology of Greywacke and Shonkinite gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Shonkinite. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Shonkinite is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke belongs to Sedimentary Rocks while Shonkinite belongs to Igneous Rocks. The sub-class, group and other categories of Greywacke and Shonkinite are listed below.

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