Chert and Gneiss Definition

Definition of Chert and Gneiss

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

History of Chert and Gneiss

The history of Chert and Gneiss 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.

Chert and Gneiss Origin and Discoverer

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

Etymology of Chert and Gneiss

Along with Chert and Gneiss definition, know more about the etymology of Chert and Gneiss. Etymology of Chert and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Gneiss. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Gneiss is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert belongs to Sedimentary Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Chert and Gneiss are listed below.

For Chert,

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

For Gneiss,

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