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Rhyodacite and Porphyry Definition


Porphyry and Rhyodacite Definition


Definition

Definition
Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite   
Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix   

History
  
  

Origin
USA   
Egypt   

Discoverer
Unknown   
Unknown   

Etymology
Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite   
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Plutonic   

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

Texture >>
<< Summary

Definition of Rhyodacite and Porphyry

The general Rhyodacite and Porphyry definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Rhyodacite and Porphyry, get to know about Properties of Rhyodacite and Porphyry. Get to know more information about Rhyodacite and Porphyry origin and discoverer, etymology and class.

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History of Rhyodacite and Porphyry

The history of Rhyodacite and Porphyry 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.

Rhyodacite and Porphyry Origin and Discoverer

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

Etymology of Rhyodacite and Porphyry

Along with Rhyodacite and Porphyry definition, know more about the etymology of Rhyodacite and Porphyry. Etymology of Rhyodacite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Rhyodacite and Formation of Porphyry. The etymology of Rhyodacite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite while that of Porphyry is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyodacite and Porphyry belong to Igneous Rocks. The sub-class, group and other categories of Rhyodacite and Porphyry are listed below.

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