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Coquina and Chert Definition


Chert and Coquina Definition


Definition

Definition
Coquina is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates   
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   

History
  
  

Origin
European Foreland Basins   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)   
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   

Class
Sedimentary Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture >>
<< Summary

Definition of Coquina and Chert

The general Coquina and Chert definition can be stated as: Coquina is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates. 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 Coquina and Chert, get to know about Properties of Coquina and Chert. Get to know more information about Coquina and Chert origin and discoverer, etymology and class.

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History of Coquina and Chert

The history of Coquina 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.

Coquina and Chert Origin and Discoverer

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

Etymology of Coquina and Chert

Along with Coquina and Chert definition, know more about the etymology of Coquina and Chert. Etymology of Coquina and Chert gives information about origin and formation of a particular rock. Know more about Formation of Coquina and Formation of Chert. The etymology of Coquina is From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century) while that of Chert is From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Coquina and Chert belong to Sedimentary Rocks. The sub-class, group and other categories of Coquina and Chert are listed below.

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