Tuff and Gneiss Definition

Definition of Tuff and Gneiss

The general Tuff and Gneiss definition can be stated as: Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. 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 Tuff and Gneiss, get to know about Properties of Tuff and Gneiss. Get to know more information about Tuff and Gneiss origin and discoverer, etymology and class.

History of Tuff and Gneiss

The history of Tuff 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.

Tuff and Gneiss Origin and Discoverer

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

Etymology of Tuff and Gneiss

Along with Tuff and Gneiss definition, know more about the etymology of Tuff and Gneiss. Etymology of Tuff and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Tuff and Formation of Gneiss. The etymology of Tuff is From a Latin word tophous then in Italian tufo and finally tuff while that of Gneiss is From a Latin word tophous then in Italian tufo and finally tuff. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tuff belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Tuff and Gneiss are listed below.

For Tuff,

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

For Gneiss,

• Sub-class: Durable Rock and Hard Rock
• Group:
• Other Categories: Coarse grained rock, Medium grained rock and Opaque rock