Arkose and Tonalite Definition

Definition of Arkose and Tonalite

The general Arkose and Tonalite definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. 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 Arkose and Tonalite, get to know about Properties of Arkose and Tonalite. Get to know more information about Arkose and Tonalite origin and discoverer, etymology and class.

History of Arkose and Tonalite

The history of Arkose 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.

Arkose and Tonalite Origin and Discoverer

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

Etymology of Arkose and Tonalite

Along with Arkose and Tonalite definition, know more about the etymology of Arkose and Tonalite. Etymology of Arkose and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Tonalite. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Tonalite is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose belongs to Sedimentary Rocks while Tonalite belongs to Igneous Rocks. The sub-class, group and other categories of Arkose and Tonalite are listed below.

For Arkose,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Coarse 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