Gneiss and Schist Definition

Definition of Gneiss and Schist

The general Gneiss and Schist 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, Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. Along with definition of Gneiss and Schist, get to know about Properties of Gneiss and Schist. Get to know more information about Gneiss and Schist origin and discoverer, etymology and class.

History of Gneiss and Schist

The history of Gneiss and Schist 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 Schist Origin and Discoverer

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

Etymology of Gneiss and Schist

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

• 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