Gritstone and Variolite Definition

Definition of Gritstone and Variolite

The general Gritstone and Variolite definition can be stated as: Gritstone or grit is a hard, coarse-grained, siliceous sandstone. 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 Gritstone and Variolite, get to know about Properties of Gritstone and Variolite. Get to know more information about Gritstone and Variolite origin and discoverer, etymology and class.

History of Gritstone and Variolite

The history of Gritstone 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.

Gritstone and Variolite Origin and Discoverer

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

Etymology of Gritstone and Variolite

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

For Gritstone,

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

For Variolite,

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