Rhyolite and Gneiss Definition

Definition of Rhyolite and Gneiss

The general Rhyolite and Gneiss definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. 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 Rhyolite and Gneiss, get to know about Properties of Rhyolite and Gneiss. Get to know more information about Rhyolite and Gneiss origin and discoverer, etymology and class.

History of Rhyolite and Gneiss

The history of Rhyolite 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.

Rhyolite and Gneiss Origin and Discoverer

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

Etymology of Rhyolite and Gneiss

Along with Rhyolite and Gneiss definition, know more about the etymology of Rhyolite and Gneiss. Etymology of Rhyolite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Gneiss. The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Gneiss is From German Rhyolit, from Greek rhuax lava stream + lithos stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyolite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Rhyolite and Gneiss are listed below.

For Rhyolite,

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

For Gneiss,

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