Chalk and Shale Definition

Definition of Chalk and Shale

The general Chalk and Shale definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Along with definition of Chalk and Shale, get to know about Properties of Chalk and Shale. Get to know more information about Chalk and Shale origin and discoverer, etymology and class.

History of Chalk and Shale

The history of Chalk and Shale 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 Shale Origin and Discoverer

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

Etymology of Chalk and Shale

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

For Chalk,

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

For Shale,

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