Chalk and Greywacke Definition

Definition of Chalk and Greywacke

The general Chalk and Greywacke definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Chalk and Greywacke, get to know about Properties of Chalk and Greywacke. Get to know more information about Chalk and Greywacke origin and discoverer, etymology and class.

History of Chalk and Greywacke

The history of Chalk and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Chalk and Greywacke

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

For Chalk,

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

For Greywacke,

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