Chalk and Tachylite Definition

Definition of Chalk and Tachylite

The general Chalk and Tachylite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Along with definition of Chalk and Tachylite, get to know about Properties of Chalk and Tachylite. Get to know more information about Chalk and Tachylite origin and discoverer, etymology and class.

History of Chalk and Tachylite

The history of Chalk and Tachylite 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 Tachylite Origin and Discoverer

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

Etymology of Chalk and Tachylite

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

For Chalk,

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

For Tachylite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock