Gneiss and Chert Definition

Definition of Gneiss and Chert

The general Gneiss and Chert 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, Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. Along with definition of Gneiss and Chert, get to know about Properties of Gneiss and Chert. Get to know more information about Gneiss and Chert origin and discoverer, etymology and class.

History of Gneiss and Chert

The history of Gneiss and Chert 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 Chert Origin and Discoverer

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

Etymology of Gneiss and Chert

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

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