Tonalite and Andesite Definition

Definition of Tonalite and Andesite

The general Tonalite and Andesite 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, Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. Along with definition of Tonalite and Andesite, get to know about Properties of Tonalite and Andesite. Get to know more information about Tonalite and Andesite origin and discoverer, etymology and class.

History of Tonalite and Andesite

The history of Tonalite and Andesite 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 Andesite Origin and Discoverer

Tonalite and Andesite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Tonalite and Andesite. In this section, you will know about Tonalite and Andesite Origin and Discoverer. Origin of Tonalite is Tonale, Italy whereas Origin of Andesite is North America. It is interesting to know the name of Tonalite and Andesite discoverer. The Discoverer of Tonalite is Warren Hamilton and the discoverer of Andesite is Theodor von Gümbel.

Etymology of Tonalite and Andesite

Along with Tonalite and Andesite definition, know more about the etymology of Tonalite and Andesite. Etymology of Tonalite and Andesite gives information about origin and formation of a particular rock. Know more about Formation of Tonalite and Formation of Andesite. The etymology of Tonalite is From Tonale Pass, northern Italy, + -ite1 while that of Andesite 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 Andesite belong to Igneous Rocks. The sub-class, group and other categories of Tonalite and Andesite 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 Andesite,

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