Variolite and Gneiss Definition

Definition of Variolite and Gneiss

The general Variolite and Gneiss definition can be stated as: Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. 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 Variolite and Gneiss, get to know about Properties of Variolite and Gneiss. Get to know more information about Variolite and Gneiss origin and discoverer, etymology and class.

History of Variolite and Gneiss

The history of Variolite 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.

Variolite and Gneiss Origin and Discoverer

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

Etymology of Variolite and Gneiss

Along with Variolite and Gneiss definition, know more about the etymology of Variolite and Gneiss. Etymology of Variolite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Gneiss. The etymology of Variolite is From Latin varius, speckled, variegated while that of Gneiss is From Latin varius, speckled, variegated. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Variolite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Variolite and Gneiss are listed below.

For Variolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: 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