Gneiss and Granite Definition

Definition of Gneiss and Granite

The general Gneiss and Granite 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, Granite is a very hard, granular, crystalline igneous rock which consists mainly of quartz, mica, and feldspar and is often used as building stone. Along with definition of Gneiss and Granite, get to know about Properties of Gneiss and Granite. Get to know more information about Gneiss and Granite origin and discoverer, etymology and class.

History of Gneiss and Granite

The history of Gneiss and Granite 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 Granite Origin and Discoverer

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

Etymology of Gneiss and Granite

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

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock