Chalk and Tephrite Definition

Definition of Chalk and Tephrite

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

History of Chalk and Tephrite

The history of Chalk and Tephrite 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.

Chalk and Tephrite Origin and Discoverer

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

Etymology of Chalk and Tephrite

Along with Chalk and Tephrite definition, know more about the etymology of Chalk and Tephrite. Etymology of Chalk and Tephrite gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Tephrite. The etymology of Chalk is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone while that of Tephrite is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chalk belongs to Sedimentary Rocks while Tephrite belongs to Igneous Rocks. The sub-class, group and other categories of Chalk and Tephrite are listed below.

For Chalk,

• Sub-class: Durable Rock and Soft Rock
• Group:
• Other Categories: Fine grained rock and Opaque rock

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