Variolite and Trondhjemite Definition

Definition of Variolite and Trondhjemite

The general Variolite and Trondhjemite 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, 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.. Along with definition of Variolite and Trondhjemite, get to know about Properties of Variolite and Trondhjemite. Get to know more information about Variolite and Trondhjemite origin and discoverer, etymology and class.

History of Variolite and Trondhjemite

The history of Variolite and Trondhjemite 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 Trondhjemite Origin and Discoverer

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

Etymology of Variolite and Trondhjemite

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

For Variolite,

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

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