Chalk and Slate Definition

Definition of Chalk and Slate

The general Chalk and Slate definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. Along with definition of Chalk and Slate, get to know about Properties of Chalk and Slate. Get to know more information about Chalk and Slate origin and discoverer, etymology and class.

History of Chalk and Slate

The history of Chalk and Slate 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 Slate Origin and Discoverer

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

Etymology of Chalk and Slate

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

For Chalk,

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

For Slate,

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