Gneiss and Slate Definition

Definition of Gneiss and Slate

The general Gneiss and Slate 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, Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. Along with definition of Gneiss and Slate, get to know about Properties of Gneiss and Slate. Get to know more information about Gneiss and Slate origin and discoverer, etymology and class.

History of Gneiss and Slate

The history of Gneiss and Slate 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 Slate Origin and Discoverer

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

Etymology of Gneiss and Slate

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

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