Trondhjemite and Variolite Definition

Definition of Trondhjemite and Variolite

The general Trondhjemite and Variolite definition can be stated as: Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. 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 Trondhjemite and Variolite, get to know about Properties of Trondhjemite and Variolite. Get to know more information about Trondhjemite and Variolite origin and discoverer, etymology and class.

History of Trondhjemite and Variolite

The history of Trondhjemite 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.

Trondhjemite and Variolite Origin and Discoverer

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

Etymology of Trondhjemite and Variolite

Along with Trondhjemite and Variolite definition, know more about the etymology of Trondhjemite and Variolite. Etymology of Trondhjemite and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Variolite. The etymology of Trondhjemite is not available while that of Variolite is not available. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trondhjemite and Variolite belong to Igneous Rocks. The sub-class, group and other categories of Trondhjemite and Variolite are listed below.

For Trondhjemite,

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

For Variolite,

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