Tonalite and Trondhjemite Definition

Definition of Tonalite and Trondhjemite

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

History of Tonalite and Trondhjemite

The history of Tonalite 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.

Tonalite and Trondhjemite Origin and Discoverer

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

Etymology of Tonalite and Trondhjemite

Along with Tonalite and Trondhjemite definition, know more about the etymology of Tonalite and Trondhjemite. Etymology of Tonalite and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Tonalite and Formation of Trondhjemite. The etymology of Tonalite is From Tonale Pass, northern Italy, + -ite1 while that of Trondhjemite is From Tonale Pass, northern Italy, + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tonalite and Trondhjemite belong to Igneous Rocks. The sub-class, group and other categories of Tonalite and Trondhjemite are listed below.

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

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