Tonalite and Chalk Definition

Definition of Tonalite and Chalk

The general Tonalite and Chalk 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, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Tonalite and Chalk, get to know about Properties of Tonalite and Chalk. Get to know more information about Tonalite and Chalk origin and discoverer, etymology and class.

History of Tonalite and Chalk

The history of Tonalite and Chalk 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 Chalk Origin and Discoverer

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

Etymology of Tonalite and Chalk

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

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