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Rapakivi Granite and Boninite Definition


Boninite and Rapakivi Granite Definition


Definition

Definition
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase   
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction   

History
  
  

Origin
Finland, Europe   
Japan   

Discoverer
Jakob Sederholm   
Unknown   

Etymology
From Finnish Rapakivi which stands for crumbly rock   
From its occurrence in the Izu-Bonin arc south of Japan   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Volcanic   

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

Texture >>
<< Summary

Definition of Rapakivi Granite and Boninite

The general Rapakivi Granite and Boninite definition can be stated as: Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. On the other hand, Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction. Along with definition of Rapakivi Granite and Boninite, get to know about Properties of Rapakivi Granite and Boninite. Get to know more information about Rapakivi Granite and Boninite origin and discoverer, etymology and class.

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History of Rapakivi Granite and Boninite

The history of Rapakivi Granite and Boninite 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.

Rapakivi Granite and Boninite Origin and Discoverer

Rapakivi Granite and Boninite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Rapakivi Granite and Boninite. In this section, you will know about Rapakivi Granite and Boninite Origin and Discoverer. Origin of Rapakivi Granite is Finland, Europe whereas Origin of Boninite is Japan. It is interesting to know the name of Rapakivi Granite and Boninite discoverer. The Discoverer of Rapakivi Granite is Jakob Sederholm and the discoverer of Boninite is Unknown.

Etymology of Rapakivi Granite and Boninite

Along with Rapakivi Granite and Boninite definition, know more about the etymology of Rapakivi Granite and Boninite. Etymology of Rapakivi Granite and Boninite gives information about origin and formation of a particular rock. Know more about Formation of Rapakivi Granite and Formation of Boninite. The etymology of Rapakivi Granite is From Finnish Rapakivi which stands for crumbly rock while that of Boninite is From Finnish Rapakivi which stands for crumbly rock. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rapakivi Granite and Boninite belong to Igneous Rocks. The sub-class, group and other categories of Rapakivi Granite and Boninite are listed below.

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For Boninite,

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