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Coquina and Trondhjemite Definition


Trondhjemite 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   
Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.   

History
  
  

Origin
European Foreland Basins   
Tonale, Italy   

Discoverer
Unknown   
Unknown   

Etymology
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)   
Not Available   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture >>
<< Summary

Definition of Coquina and Trondhjemite

The general Coquina and Trondhjemite 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, Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. Along with definition of Coquina and Trondhjemite, get to know about Properties of Coquina and Trondhjemite. Get to know more information about Coquina and Trondhjemite origin and discoverer, etymology and class.

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History of Coquina and Trondhjemite

The history of Coquina and Trondhjemite 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 Trondhjemite Origin and Discoverer

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

Etymology of Coquina and Trondhjemite

Along with Coquina and Trondhjemite definition, know more about the etymology of Coquina and Trondhjemite. Etymology of Coquina and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Coquina and Formation of Trondhjemite. The etymology of Coquina is From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century) while that of Trondhjemite 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 belongs to Sedimentary Rocks while Trondhjemite belongs to Igneous Rocks. The sub-class, group and other categories of Coquina and Trondhjemite are listed below.

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