Gneiss and Icelandite Definition

Definition of Gneiss and Icelandite

The general Gneiss and Icelandite 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, Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock. Along with definition of Gneiss and Icelandite, get to know about Properties of Gneiss and Icelandite. Get to know more information about Gneiss and Icelandite origin and discoverer, etymology and class.

History of Gneiss and Icelandite

The history of Gneiss and Icelandite 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 Icelandite Origin and Discoverer

Gneiss and Icelandite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Gneiss and Icelandite. In this section, you will know about Gneiss and Icelandite Origin and Discoverer. Origin of Gneiss is Unknown whereas Origin of Icelandite is Iceland. It is interesting to know the name of Gneiss and Icelandite discoverer. The Discoverer of Gneiss is Unknown and the discoverer of Icelandite is Ian S. E. Carmichael.

Etymology of Gneiss and Icelandite

Along with Gneiss and Icelandite definition, know more about the etymology of Gneiss and Icelandite. Etymology of Gneiss and Icelandite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Icelandite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Icelandite 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 belongs to Metamorphic Rocks while Icelandite belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Icelandite 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 Icelandite,

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