Oil shale and Variolite Definition

Definition of Oil shale and Variolite

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

History of Oil shale and Variolite

The history of Oil shale 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.

Oil shale and Variolite Origin and Discoverer

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

Etymology of Oil shale and Variolite

Along with Oil shale and Variolite definition, know more about the etymology of Oil shale and Variolite. Etymology of Oil shale and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Oil shale and Formation of Variolite. The etymology of Oil shale is From Old English scealu in its base sense of thing that divides or separate while that of Variolite is From Old English scealu in its base sense of thing that divides or separate. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Oil shale belongs to Sedimentary Rocks while Variolite belongs to Igneous Rocks. The sub-class, group and other categories of Oil shale and Variolite are listed below.

For Oil shale,

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

For Variolite,

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