Tephrite and Chalk Definition

Definition of Tephrite and Chalk

The general Tephrite and Chalk definition can be stated as: Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Tephrite and Chalk, get to know about Properties of Tephrite and Chalk. Get to know more information about Tephrite and Chalk origin and discoverer, etymology and class.

History of Tephrite and Chalk

The history of Tephrite 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.

Tephrite and Chalk Origin and Discoverer

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

Etymology of Tephrite and Chalk

Along with Tephrite and Chalk definition, know more about the etymology of Tephrite and Chalk. Etymology of Tephrite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Tephrite and Formation of Chalk. The etymology of Tephrite is From Greek tephra, ashes from Indo-European base, to burn while that of Chalk is From Greek tephra, ashes from Indo-European base, to burn. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tephrite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Tephrite and Chalk are listed below.

For Tephrite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• 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