Chalk and Variolite Definition

Definition of Chalk and Variolite

The general Chalk and Variolite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. Along with definition of Chalk and Variolite, get to know about Properties of Chalk and Variolite. Get to know more information about Chalk and Variolite origin and discoverer, etymology and class.

History of Chalk and Variolite

The history of Chalk and Variolite 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 Variolite Origin and Discoverer

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

Etymology of Chalk and Variolite

Along with Chalk and Variolite definition, know more about the etymology of Chalk and Variolite. Etymology of Chalk and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Variolite. 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 Variolite 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 Variolite belongs to Igneous Rocks. The sub-class, group and other categories of Chalk and Variolite are listed below.

For Chalk,

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

For Variolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Opaque rock