Hornfels and Variolite Definition

Definition of Hornfels and Variolite

The general Hornfels and Variolite definition can be stated as: Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. 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 Hornfels and Variolite, get to know about Properties of Hornfels and Variolite. Get to know more information about Hornfels and Variolite origin and discoverer, etymology and class.

History of Hornfels and Variolite

The history of Hornfels 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.

Hornfels and Variolite Origin and Discoverer

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

Etymology of Hornfels and Variolite

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

For Hornfels,

• 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