Variolite and Oil shale Definition

Definition of Variolite and Oil shale

The general Variolite and Oil shale 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, Oil Shale is a fine-grained sedimentary rock from which oil is extracted. Along with definition of Variolite and Oil shale, get to know about Properties of Variolite and Oil shale. Get to know more information about Variolite and Oil shale origin and discoverer, etymology and class.

History of Variolite and Oil shale

The history of Variolite and Oil shale 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 Oil shale Origin and Discoverer

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

Etymology of Variolite and Oil shale

Along with Variolite and Oil shale definition, know more about the etymology of Variolite and Oil shale. Etymology of Variolite and Oil shale gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Oil shale. The etymology of Variolite is From Latin varius, speckled, variegated while that of Oil shale 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 Oil shale belongs to Sedimentary Rocks. The sub-class, group and other categories of Variolite and Oil shale are listed below.

For Variolite,

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

For Oil shale,

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