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Adakite
Adakite

Gneiss
Gneiss



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Adakite and Gneiss Definition

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1 Definition
1.1 Definition
Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs
Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks
1.2 History
1.2.1 Origin
Adak, Aleutian Islands
Unknown
1.2.2 Discoverer
Defant and Drummond
Unknown
1.3 Etymology
From Adak, Aleutian Islands
From the Middle High German verb gneist (to spark; so called because the rock glitters)
1.4 Class
Igneous Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Volcanic
Not Applicable
1.6 Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Definition of Adakite and Gneiss

The general Adakite and Gneiss definition can be stated as: Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. On the other hand, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Adakite and Gneiss, get to know about Properties of Adakite and Gneiss. Get to know more information about Adakite and Gneiss origin and discoverer, etymology and class.

History of Adakite and Gneiss

The history of Adakite and Gneiss 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.

Adakite and Gneiss Origin and Discoverer

Adakite and Gneiss definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Adakite and Gneiss. In this section, you will know about Adakite and Gneiss Origin and Discoverer. Origin of Adakite is Adak, Aleutian Islands whereas Origin of Gneiss is Unknown. It is interesting to know the name of Adakite and Gneiss discoverer. The Discoverer of Adakite is Defant and Drummond and the discoverer of Gneiss is Unknown.

Etymology of Adakite and Gneiss

Along with Adakite and Gneiss definition, know more about the etymology of Adakite and Gneiss. Etymology of Adakite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Adakite and Formation of Gneiss. The etymology of Adakite is From Adak, Aleutian Islands while that of Gneiss is From Adak, Aleutian Islands. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Adakite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Adakite and Gneiss are listed below.

For Adakite,

  • Sub-class: Durable Rock and Medium Hardness Rock
  • Group: Volcanic
  • Other Categories: Fine grained rock, Medium grained rock and Opaque rock

For Gneiss,

  • Sub-class: Durable Rock and Hard Rock
  • Group: Not applicable
  • Other Categories: Coarse grained rock, Medium grained rock and Opaque rock
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