Gneiss and Ignimbrite Definition

Definition of Gneiss and Ignimbrite

The general Gneiss and Ignimbrite 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, Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows. Along with definition of Gneiss and Ignimbrite, get to know about Properties of Gneiss and Ignimbrite. Get to know more information about Gneiss and Ignimbrite origin and discoverer, etymology and class.

History of Gneiss and Ignimbrite

The history of Gneiss and Ignimbrite 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 Ignimbrite Origin and Discoverer

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

Etymology of Gneiss and Ignimbrite

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

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