Phonolite and Chalk Definition

Definition of Phonolite and Chalk

The general Phonolite and Chalk definition can be stated as: Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Phonolite and Chalk, get to know about Properties of Phonolite and Chalk. Get to know more information about Phonolite and Chalk origin and discoverer, etymology and class.

History of Phonolite and Chalk

The history of Phonolite 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.

Phonolite and Chalk Origin and Discoverer

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

Etymology of Phonolite and Chalk

Along with Phonolite and Chalk definition, know more about the etymology of Phonolite and Chalk. Etymology of Phonolite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Chalk. The etymology of Phonolite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit while that of Chalk is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phonolite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Phonolite and Chalk are listed below.

For Phonolite,

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