Gneiss and Rhyodacite Definition

Definition of Gneiss and Rhyodacite

The general Gneiss and Rhyodacite 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, Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. Along with definition of Gneiss and Rhyodacite, get to know about Properties of Gneiss and Rhyodacite. Get to know more information about Gneiss and Rhyodacite origin and discoverer, etymology and class.

History of Gneiss and Rhyodacite

The history of Gneiss and Rhyodacite 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 Rhyodacite Origin and Discoverer

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

Etymology of Gneiss and Rhyodacite

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

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