Tonalite and Greywacke Definition

Definition of Tonalite and Greywacke

The general Tonalite and Greywacke 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, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Tonalite and Greywacke, get to know about Properties of Tonalite and Greywacke. Get to know more information about Tonalite and Greywacke origin and discoverer, etymology and class.

History of Tonalite and Greywacke

The history of Tonalite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Tonalite and Greywacke

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

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