Greywacke and Tuff Definition

Definition of Greywacke and Tuff

The general Greywacke and Tuff definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Along with definition of Greywacke and Tuff, get to know about Properties of Greywacke and Tuff. Get to know more information about Greywacke and Tuff origin and discoverer, etymology and class.

History of Greywacke and Tuff

The history of Greywacke and Tuff 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.

Greywacke and Tuff Origin and Discoverer

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

Etymology of Greywacke and Tuff

Along with Greywacke and Tuff definition, know more about the etymology of Greywacke and Tuff. Etymology of Greywacke and Tuff gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Tuff. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Tuff is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke belongs to Sedimentary Rocks while Tuff belongs to Igneous Rocks. The sub-class, group and other categories of Greywacke and Tuff are listed below.

For Greywacke,

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

For Tuff,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Fine grained rock and Opaque rock