Tonalite and Mylonite Definition

Definition of Tonalite and Mylonite

The general Tonalite and Mylonite 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, Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism. Along with definition of Tonalite and Mylonite, get to know about Properties of Tonalite and Mylonite. Get to know more information about Tonalite and Mylonite origin and discoverer, etymology and class.

History of Tonalite and Mylonite

The history of Tonalite and Mylonite 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 Mylonite Origin and Discoverer

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

Etymology of Tonalite and Mylonite

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

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock