Arkose and Variolite Definition

Definition of Arkose and Variolite

The general Arkose and Variolite definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. On the other hand, 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. Along with definition of Arkose and Variolite, get to know about Properties of Arkose and Variolite. Get to know more information about Arkose and Variolite origin and discoverer, etymology and class.

History of Arkose and Variolite

The history of Arkose and Variolite 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.

Arkose and Variolite Origin and Discoverer

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

Etymology of Arkose and Variolite

Along with Arkose and Variolite definition, know more about the etymology of Arkose and Variolite. Etymology of Arkose and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Variolite. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Variolite is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose belongs to Sedimentary Rocks while Variolite belongs to Igneous Rocks. The sub-class, group and other categories of Arkose and Variolite are listed below.

For Arkose,

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

For Variolite,

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