Tonalite and Dacite Definition

Definition of Tonalite and Dacite

The general Tonalite and Dacite 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, Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. Along with definition of Tonalite and Dacite, get to know about Properties of Tonalite and Dacite. Get to know more information about Tonalite and Dacite origin and discoverer, etymology and class.

History of Tonalite and Dacite

The history of Tonalite and Dacite 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 Dacite Origin and Discoverer

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

Etymology of Tonalite and Dacite

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

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