Tonalite and Shale Definition

Definition of Tonalite and Shale

The general Tonalite and Shale 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, Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Along with definition of Tonalite and Shale, get to know about Properties of Tonalite and Shale. Get to know more information about Tonalite and Shale origin and discoverer, etymology and class.

History of Tonalite and Shale

The history of Tonalite and Shale 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 Shale Origin and Discoverer

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

Etymology of Tonalite and Shale

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

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