Chalk and Norite Definition

Definition of Chalk and Norite

The general Chalk and Norite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Along with definition of Chalk and Norite, get to know about Properties of Chalk and Norite. Get to know more information about Chalk and Norite origin and discoverer, etymology and class.

History of Chalk and Norite

The history of Chalk and Norite 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 Norite Origin and Discoverer

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

Etymology of Chalk and Norite

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

For Chalk,

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

For Norite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock