Trondhjemite and Tonalite Definition

Definition of Trondhjemite and Tonalite

The general Trondhjemite and Tonalite 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, Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. Along with definition of Trondhjemite and Tonalite, get to know about Properties of Trondhjemite and Tonalite. Get to know more information about Trondhjemite and Tonalite origin and discoverer, etymology and class.

History of Trondhjemite and Tonalite

The history of Trondhjemite and Tonalite 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 Tonalite Origin and Discoverer

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

Etymology of Trondhjemite and Tonalite

Along with Trondhjemite and Tonalite definition, know more about the etymology of Trondhjemite and Tonalite. Etymology of Trondhjemite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Tonalite. The etymology of Trondhjemite is From Trondheim, Norway while that of Tonalite is From Trondheim, Norway. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trondhjemite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Trondhjemite and Tonalite 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 Tonalite,

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