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Gneiss

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Gneiss and Migmatite Definition

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1 Definition
1.1 Definition
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
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
1.2 History
1.2.1 Origin
Unknown
Southern Alps, France
1.2.2 Discoverer
Unknown
Jakob Sederholm
1.3 Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)
From the Greek word migma which means a mixture
1.4 Class
Metamorphic Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Definition of Gneiss and Migmatite

The general Gneiss and Migmatite definition can be stated as: 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. On the other hand, Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components. Along with definition of Gneiss and Migmatite, get to know about Properties of Gneiss and Migmatite. Get to know more information about Gneiss and Migmatite origin and discoverer, etymology and class.

History of Gneiss and Migmatite

The history of Gneiss and Migmatite 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.

Gneiss and Migmatite Origin and Discoverer

Gneiss and Migmatite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Gneiss and Migmatite. In this section, you will know about Gneiss and Migmatite Origin and Discoverer. Origin of Gneiss is Unknown whereas Origin of Migmatite is Southern Alps, France. It is interesting to know the name of Gneiss and Migmatite discoverer. The Discoverer of Gneiss is Unknown and the discoverer of Migmatite is Jakob Sederholm.

Etymology of Gneiss and Migmatite

Along with Gneiss and Migmatite definition, know more about the etymology of Gneiss and Migmatite. Etymology of Gneiss and Migmatite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Migmatite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Migmatite is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss and Migmatite belong to Metamorphic Rocks. The sub-class, group and other categories of Gneiss and Migmatite are listed below.

For Gneiss,

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

For Migmatite,

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