Gneiss and Pumice Definition

Definition of Gneiss and Pumice

The general Gneiss and Pumice 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, Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. Along with definition of Gneiss and Pumice, get to know about Properties of Gneiss and Pumice. Get to know more information about Gneiss and Pumice origin and discoverer, etymology and class.

History of Gneiss and Pumice

The history of Gneiss and Pumice 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 Pumice Origin and Discoverer

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

Etymology of Gneiss and Pumice

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

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