Chert and Greywacke Definition

Definition of Chert and Greywacke

The general Chert and Greywacke 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, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Chert and Greywacke, get to know about Properties of Chert and Greywacke. Get to know more information about Chert and Greywacke origin and discoverer, etymology and class.

History of Chert and Greywacke

The history of Chert and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Chert and Greywacke

Along with Chert and Greywacke definition, know more about the etymology of Chert and Greywacke. Etymology of Chert and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Greywacke. 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 Greywacke 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 and Greywacke belong to Sedimentary Rocks. The sub-class, group and other categories of Chert and Greywacke are listed below.

For Chert,

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

For Greywacke,

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