Rhyolite and Greywacke Definition

Definition of Rhyolite and Greywacke

The general Rhyolite and Greywacke definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. On the other hand, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Rhyolite and Greywacke, get to know about Properties of Rhyolite and Greywacke. Get to know more information about Rhyolite and Greywacke origin and discoverer, etymology and class.

History of Rhyolite and Greywacke

The history of Rhyolite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Rhyolite and Greywacke

Along with Rhyolite and Greywacke definition, know more about the etymology of Rhyolite and Greywacke. Etymology of Rhyolite and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Greywacke. The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Greywacke 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 Greywacke belongs to Sedimentary Rocks. The sub-class, group and other categories of Rhyolite and Greywacke are listed below.

For Rhyolite,

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

For Greywacke,

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